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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include <stddef.h> | 5 #include <stddef.h> |
6 #include <stdint.h> | 6 #include <stdint.h> |
7 | 7 |
8 #include <limits> | 8 #include <limits> |
9 #include <type_traits> | 9 #include <type_traits> |
10 | 10 |
11 #include "base/compiler_specific.h" | 11 #include "base/compiler_specific.h" |
12 #include "base/logging.h" | 12 #include "base/logging.h" |
13 #include "base/numerics/safe_conversions.h" | 13 #include "base/numerics/safe_conversions.h" |
14 #include "base/numerics/safe_math.h" | 14 #include "base/numerics/safe_math.h" |
15 #include "base/test/gtest_util.h" | 15 #include "base/test/gtest_util.h" |
16 #include "build/build_config.h" | 16 #include "build/build_config.h" |
17 #include "testing/gtest/include/gtest/gtest.h" | 17 #include "testing/gtest/include/gtest/gtest.h" |
18 | 18 |
19 #if defined(COMPILER_MSVC) && defined(ARCH_CPU_32_BITS) | 19 #if defined(COMPILER_MSVC) && defined(ARCH_CPU_32_BITS) |
20 #include <mmintrin.h> | 20 #include <mmintrin.h> |
21 #endif | 21 #endif |
22 | 22 |
23 using std::numeric_limits; | 23 using std::numeric_limits; |
24 using base::CheckedNumeric; | 24 using base::CheckedNumeric; |
25 using base::ClampedNumeric; | |
25 using base::IsValidForType; | 26 using base::IsValidForType; |
26 using base::ValueOrDieForType; | 27 using base::ValueOrDieForType; |
27 using base::ValueOrDefaultForType; | 28 using base::ValueOrDefaultForType; |
28 using base::MakeCheckedNum; | 29 using base::MakeCheckedNum; |
30 using base::MakeClampedNum; | |
29 using base::CheckMax; | 31 using base::CheckMax; |
30 using base::CheckMin; | 32 using base::CheckMin; |
31 using base::CheckAdd; | 33 using base::CheckAdd; |
32 using base::CheckSub; | 34 using base::CheckSub; |
33 using base::CheckMul; | 35 using base::CheckMul; |
34 using base::CheckDiv; | 36 using base::CheckDiv; |
35 using base::CheckMod; | 37 using base::CheckMod; |
36 using base::CheckLsh; | 38 using base::CheckLsh; |
37 using base::CheckRsh; | 39 using base::CheckRsh; |
40 using base::ClampMax; | |
41 using base::ClampMin; | |
42 using base::ClampAdd; | |
43 using base::ClampSub; | |
44 using base::ClampMul; | |
45 using base::ClampDiv; | |
46 using base::ClampMod; | |
47 using base::ClampLsh; | |
48 using base::ClampRsh; | |
49 using base::as_unsigned; | |
38 using base::checked_cast; | 50 using base::checked_cast; |
39 using base::IsValueInRangeForNumericType; | 51 using base::IsValueInRangeForNumericType; |
40 using base::IsValueNegative; | 52 using base::IsValueNegative; |
53 using base::SaturationDefaultLimits; | |
41 using base::SizeT; | 54 using base::SizeT; |
42 using base::StrictNumeric; | 55 using base::StrictNumeric; |
43 using base::MakeStrictNum; | 56 using base::MakeStrictNum; |
44 using base::saturated_cast; | 57 using base::saturated_cast; |
45 using base::strict_cast; | 58 using base::strict_cast; |
46 using base::internal::MaxExponent; | 59 using base::internal::MaxExponent; |
47 using base::internal::IntegerBitsPlusSign; | 60 using base::internal::IntegerBitsPlusSign; |
48 using base::internal::RangeCheck; | 61 using base::internal::RangeCheck; |
49 | 62 |
50 // These tests deliberately cause arithmetic boundary errors. If the compiler is | 63 // These tests deliberately cause arithmetic boundary errors. If the compiler is |
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124 ""); | 137 ""); |
125 static_assert(!FastIntegerArithmeticPromotion<intmax_t, int8_t>::is_contained, | 138 static_assert(!FastIntegerArithmeticPromotion<intmax_t, int8_t>::is_contained, |
126 ""); | 139 ""); |
127 static_assert(!FastIntegerArithmeticPromotion<uintmax_t, int8_t>::is_contained, | 140 static_assert(!FastIntegerArithmeticPromotion<uintmax_t, int8_t>::is_contained, |
128 ""); | 141 ""); |
129 | 142 |
130 template <typename U> | 143 template <typename U> |
131 U GetNumericValueForTest(const CheckedNumeric<U>& src) { | 144 U GetNumericValueForTest(const CheckedNumeric<U>& src) { |
132 return src.state_.value(); | 145 return src.state_.value(); |
133 } | 146 } |
147 | |
148 template <typename U> | |
149 U GetNumericValueForTest(const ClampedNumeric<U>& src) { | |
150 return static_cast<U>(src); | |
151 } | |
152 | |
153 template <typename U> | |
154 U GetNumericValueForTest(const U& src) { | |
155 return src; | |
156 } | |
157 | |
134 } // namespace internal. | 158 } // namespace internal. |
135 } // namespace base. | 159 } // namespace base. |
136 | 160 |
137 using base::internal::GetNumericValueForTest; | 161 using base::internal::GetNumericValueForTest; |
138 | 162 |
139 // Logs the ValueOrDie() failure instead of crashing. | 163 // Logs the ValueOrDie() failure instead of crashing. |
140 struct LogOnFailure { | 164 struct LogOnFailure { |
141 template <typename T> | 165 template <typename T> |
142 static T HandleFailure() { | 166 static T HandleFailure() { |
143 LOG(WARNING) << "ValueOrDie() failed unexpectedly."; | 167 LOG(WARNING) << "ValueOrDie() failed unexpectedly."; |
144 return T(); | 168 return T(); |
145 } | 169 } |
146 }; | 170 }; |
147 | 171 |
172 template <typename T> | |
173 constexpr T GetValue(const T& src) { | |
174 return src; | |
175 } | |
176 | |
177 template <typename T, typename U> | |
178 constexpr T GetValueAsDest(const U& src) { | |
179 return static_cast<T>(src); | |
180 } | |
181 | |
182 template <typename T> | |
183 constexpr T GetValue(const CheckedNumeric<T>& src) { | |
184 return src.template ValueOrDie<T, LogOnFailure>(); | |
185 } | |
186 | |
187 template <typename T, typename U> | |
188 constexpr T GetValueAsDest(const CheckedNumeric<U>& src) { | |
189 return src.template ValueOrDie<T, LogOnFailure>(); | |
190 } | |
191 | |
192 template <typename T> | |
193 constexpr T GetValue(const ClampedNumeric<T>& src) { | |
194 return static_cast<T>(src); | |
195 } | |
196 | |
197 template <typename T, typename U> | |
198 constexpr T GetValueAsDest(const ClampedNumeric<U>& src) { | |
199 return static_cast<T>(src); | |
200 } | |
201 | |
148 // Helper macros to wrap displaying the conversion types and line numbers. | 202 // Helper macros to wrap displaying the conversion types and line numbers. |
149 #define TEST_EXPECTED_VALIDITY(expected, actual) \ | 203 #define TEST_EXPECTED_VALIDITY(expected, actual) \ |
150 EXPECT_EQ(expected, (actual).template Cast<Dst>().IsValid()) \ | 204 EXPECT_EQ(expected, (actual).template Cast<Dst>().IsValid()) \ |
151 << "Result test: Value " << GetNumericValueForTest(actual) << " as " \ | 205 << "Result test: Value " << GetNumericValueForTest(actual) << " as " \ |
152 << dst << " on line " << line | 206 << dst << " on line " << line |
153 | 207 |
154 #define TEST_EXPECTED_SUCCESS(actual) TEST_EXPECTED_VALIDITY(true, actual) | 208 #define TEST_EXPECTED_SUCCESS(actual) TEST_EXPECTED_VALIDITY(true, actual) |
155 #define TEST_EXPECTED_FAILURE(actual) TEST_EXPECTED_VALIDITY(false, actual) | 209 #define TEST_EXPECTED_FAILURE(actual) TEST_EXPECTED_VALIDITY(false, actual) |
156 | 210 |
157 // We have to handle promotions, so infer the underlying type below from actual. | 211 // We have to handle promotions, so infer the underlying type below from actual. |
158 #define TEST_EXPECTED_VALUE(expected, actual) \ | 212 #define TEST_EXPECTED_VALUE(expected, actual) \ |
159 EXPECT_EQ(static_cast<typename std::decay<decltype(actual)>::type::type>( \ | 213 EXPECT_EQ(GetValue(expected), GetValueAsDest<decltype(expected)>(actual)) \ |
160 expected), \ | |
161 ((actual) \ | |
162 .template ValueOrDie< \ | |
163 typename std::decay<decltype(actual)>::type::type, \ | |
164 LogOnFailure>())) \ | |
165 << "Result test: Value " << GetNumericValueForTest(actual) << " as " \ | 214 << "Result test: Value " << GetNumericValueForTest(actual) << " as " \ |
166 << dst << " on line " << line | 215 << dst << " on line " << line |
167 | 216 |
168 // Test the simple pointer arithmetic overrides. | 217 // Test the simple pointer arithmetic overrides. |
169 template <typename Dst> | 218 template <typename Dst> |
170 void TestStrictPointerMath() { | 219 void TestStrictPointerMath() { |
171 Dst dummy_value = 0; | 220 Dst dummy_value = 0; |
172 Dst* dummy_ptr = &dummy_value; | 221 Dst* dummy_ptr = &dummy_value; |
173 static const Dst kDummyOffset = 2; // Don't want to go too far. | 222 static const Dst kDummyOffset = 2; // Don't want to go too far. |
174 EXPECT_EQ(dummy_ptr + kDummyOffset, | 223 EXPECT_EQ(dummy_ptr + kDummyOffset, |
175 dummy_ptr + StrictNumeric<Dst>(kDummyOffset)); | 224 dummy_ptr + StrictNumeric<Dst>(kDummyOffset)); |
176 EXPECT_EQ(dummy_ptr - kDummyOffset, | 225 EXPECT_EQ(dummy_ptr - kDummyOffset, |
177 dummy_ptr - StrictNumeric<Dst>(kDummyOffset)); | 226 dummy_ptr - StrictNumeric<Dst>(kDummyOffset)); |
178 EXPECT_NE(dummy_ptr, dummy_ptr + StrictNumeric<Dst>(kDummyOffset)); | 227 EXPECT_NE(dummy_ptr, dummy_ptr + StrictNumeric<Dst>(kDummyOffset)); |
179 EXPECT_NE(dummy_ptr, dummy_ptr - StrictNumeric<Dst>(kDummyOffset)); | 228 EXPECT_NE(dummy_ptr, dummy_ptr - StrictNumeric<Dst>(kDummyOffset)); |
180 EXPECT_DEATH_IF_SUPPORTED( | 229 EXPECT_DEATH_IF_SUPPORTED( |
181 dummy_ptr + StrictNumeric<size_t>(std::numeric_limits<size_t>::max()), | 230 dummy_ptr + StrictNumeric<size_t>(std::numeric_limits<size_t>::max()), |
182 ""); | 231 ""); |
183 } | 232 } |
184 | 233 |
185 // Signed integer arithmetic. | 234 // Signed integer arithmetic. |
186 template <typename Dst> | 235 template <typename Dst> |
187 static void TestSpecializedArithmetic( | 236 static void TestSpecializedArithmetic( |
188 const char* dst, | 237 const char* dst, |
189 int line, | 238 int line, |
190 typename std::enable_if<numeric_limits<Dst>::is_integer && | 239 typename std::enable_if<numeric_limits<Dst>::is_integer && |
191 numeric_limits<Dst>::is_signed, | 240 numeric_limits<Dst>::is_signed, |
192 int>::type = 0) { | 241 int>::type = 0) { |
193 using DstLimits = numeric_limits<Dst>; | 242 using DstLimits = SaturationDefaultLimits<Dst>; |
194 TEST_EXPECTED_FAILURE(-CheckedNumeric<Dst>(DstLimits::lowest())); | 243 TEST_EXPECTED_FAILURE(-CheckedNumeric<Dst>(DstLimits::lowest())); |
195 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()).Abs()); | 244 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()).Abs()); |
196 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(-1).Abs()); | 245 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(-1).Abs()); |
197 TEST_EXPECTED_VALUE(DstLimits::max(), | 246 TEST_EXPECTED_VALUE(DstLimits::max(), |
198 MakeCheckedNum(-DstLimits::max()).Abs()); | 247 MakeCheckedNum(-DstLimits::max()).Abs()); |
199 | 248 |
249 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
250 -ClampedNumeric<Dst>(DstLimits::lowest())); | |
251 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
252 ClampedNumeric<Dst>(DstLimits::lowest()).Abs()); | |
253 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(-1).Abs()); | |
254 TEST_EXPECTED_VALUE(DstLimits::max(), | |
255 MakeClampedNum(-DstLimits::max()).Abs()); | |
256 | |
200 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::max()) + -1); | 257 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::max()) + -1); |
201 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) + -1); | 258 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) + -1); |
202 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) + | 259 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) + |
203 DstLimits::lowest()); | 260 DstLimits::lowest()); |
204 | 261 |
262 TEST_EXPECTED_VALUE(DstLimits::max() - 1, | |
263 ClampedNumeric<Dst>(DstLimits::max()) + -1); | |
264 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
265 ClampedNumeric<Dst>(DstLimits::lowest()) + -1); | |
266 TEST_EXPECTED_VALUE( | |
267 DstLimits::Underflow(), | |
268 ClampedNumeric<Dst>(DstLimits::lowest()) + DstLimits::lowest()); | |
269 | |
205 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) - 1); | 270 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) - 1); |
206 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()) - -1); | 271 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()) - -1); |
207 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) - | 272 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) - |
208 DstLimits::lowest()); | 273 DstLimits::lowest()); |
209 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) - | 274 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) - |
210 DstLimits::max()); | 275 DstLimits::max()); |
211 | 276 |
277 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
278 ClampedNumeric<Dst>(DstLimits::lowest()) - 1); | |
279 TEST_EXPECTED_VALUE(DstLimits::lowest() + 1, | |
280 ClampedNumeric<Dst>(DstLimits::lowest()) - -1); | |
281 TEST_EXPECTED_VALUE( | |
282 DstLimits::Overflow(), | |
283 ClampedNumeric<Dst>(DstLimits::max()) - DstLimits::lowest()); | |
284 TEST_EXPECTED_VALUE( | |
285 DstLimits::Underflow(), | |
286 ClampedNumeric<Dst>(DstLimits::lowest()) - DstLimits::max()); | |
287 | |
212 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) * 2); | 288 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) * 2); |
289 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
290 ClampedNumeric<Dst>(DstLimits::lowest()) * 2); | |
213 | 291 |
214 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) / -1); | 292 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) / -1); |
215 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(-1) / 2); | 293 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(-1) / 2); |
216 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) * -1); | 294 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) * -1); |
217 TEST_EXPECTED_VALUE(DstLimits::max(), | 295 TEST_EXPECTED_VALUE(DstLimits::max(), |
218 CheckedNumeric<Dst>(DstLimits::lowest() + 1) * Dst(-1)); | 296 CheckedNumeric<Dst>(DstLimits::lowest() + 1) * Dst(-1)); |
219 TEST_EXPECTED_VALUE(DstLimits::max(), | 297 TEST_EXPECTED_VALUE(DstLimits::max(), |
220 CheckedNumeric<Dst>(-1) * Dst(DstLimits::lowest() + 1)); | 298 CheckedNumeric<Dst>(-1) * Dst(DstLimits::lowest() + 1)); |
221 TEST_EXPECTED_VALUE(DstLimits::lowest(), | 299 TEST_EXPECTED_VALUE(DstLimits::lowest(), |
222 CheckedNumeric<Dst>(DstLimits::lowest()) * Dst(1)); | 300 CheckedNumeric<Dst>(DstLimits::lowest()) * Dst(1)); |
223 TEST_EXPECTED_VALUE(DstLimits::lowest(), | 301 TEST_EXPECTED_VALUE(DstLimits::lowest(), |
224 CheckedNumeric<Dst>(1) * Dst(DstLimits::lowest())); | 302 CheckedNumeric<Dst>(1) * Dst(DstLimits::lowest())); |
225 TEST_EXPECTED_VALUE(DstLimits::lowest(), | 303 TEST_EXPECTED_VALUE( |
226 MakeCheckedNum(DstLimits::lowest()).UnsignedAbs()); | 304 typename std::make_unsigned<Dst>::type(0) - DstLimits::lowest(), |
305 MakeCheckedNum(DstLimits::lowest()).UnsignedAbs()); | |
227 TEST_EXPECTED_VALUE(DstLimits::max(), | 306 TEST_EXPECTED_VALUE(DstLimits::max(), |
228 MakeCheckedNum(DstLimits::max()).UnsignedAbs()); | 307 MakeCheckedNum(DstLimits::max()).UnsignedAbs()); |
229 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(0).UnsignedAbs()); | 308 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(0).UnsignedAbs()); |
230 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1).UnsignedAbs()); | 309 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1).UnsignedAbs()); |
231 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(-1).UnsignedAbs()); | 310 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(-1).UnsignedAbs()); |
232 | 311 |
312 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
313 ClampedNumeric<Dst>(DstLimits::lowest()) / -1); | |
314 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(-1) / 2); | |
315 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
316 ClampedNumeric<Dst>(DstLimits::lowest()) * -1); | |
317 TEST_EXPECTED_VALUE(DstLimits::max(), | |
318 ClampedNumeric<Dst>(DstLimits::lowest() + 1) * Dst(-1)); | |
319 TEST_EXPECTED_VALUE(DstLimits::max(), | |
320 ClampedNumeric<Dst>(-1) * Dst(DstLimits::lowest() + 1)); | |
321 TEST_EXPECTED_VALUE(DstLimits::lowest(), | |
322 ClampedNumeric<Dst>(DstLimits::lowest()) * Dst(1)); | |
323 TEST_EXPECTED_VALUE(DstLimits::lowest(), | |
324 ClampedNumeric<Dst>(1) * Dst(DstLimits::lowest())); | |
325 TEST_EXPECTED_VALUE( | |
326 typename std::make_unsigned<Dst>::type(0) - DstLimits::lowest(), | |
327 MakeClampedNum(DstLimits::lowest()).UnsignedAbs()); | |
328 TEST_EXPECTED_VALUE(DstLimits::max(), | |
329 MakeClampedNum(DstLimits::max()).UnsignedAbs()); | |
330 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(0).UnsignedAbs()); | |
331 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1).UnsignedAbs()); | |
332 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(-1).UnsignedAbs()); | |
333 | |
233 // Modulus is legal only for integers. | 334 // Modulus is legal only for integers. |
234 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>() % 1); | 335 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>() % 1); |
235 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % 1); | 336 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % 1); |
236 TEST_EXPECTED_VALUE(-1, CheckedNumeric<Dst>(-1) % 2); | 337 TEST_EXPECTED_VALUE(-1, CheckedNumeric<Dst>(-1) % 2); |
237 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(-1) % -2); | 338 TEST_EXPECTED_VALUE(-1, CheckedNumeric<Dst>(-1) % -2); |
238 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(DstLimits::lowest()) % 2); | 339 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(DstLimits::lowest()) % 2); |
239 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(DstLimits::max()) % 2); | 340 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(DstLimits::max()) % 2); |
240 // Test all the different modulus combinations. | 341 // Test all the different modulus combinations. |
241 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % CheckedNumeric<Dst>(1)); | 342 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % CheckedNumeric<Dst>(1)); |
242 TEST_EXPECTED_VALUE(0, 1 % CheckedNumeric<Dst>(1)); | 343 TEST_EXPECTED_VALUE(0, 1 % CheckedNumeric<Dst>(1)); |
243 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % 1); | 344 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % 1); |
244 CheckedNumeric<Dst> checked_dst = 1; | 345 CheckedNumeric<Dst> checked_dst = 1; |
245 TEST_EXPECTED_VALUE(0, checked_dst %= 1); | 346 TEST_EXPECTED_VALUE(0, checked_dst %= 1); |
246 // Test that div by 0 is avoided but returns invalid result. | 347 // Test that div by 0 is avoided but returns invalid result. |
247 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(1) % 0); | 348 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(1) % 0); |
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259 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(0) | 360 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(0) |
260 << (IntegerBitsPlusSign<Dst>::value - 1)); | 361 << (IntegerBitsPlusSign<Dst>::value - 1)); |
261 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1) << 0); | 362 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1) << 0); |
262 TEST_EXPECTED_VALUE(2, CheckedNumeric<Dst>(1) << 1); | 363 TEST_EXPECTED_VALUE(2, CheckedNumeric<Dst>(1) << 1); |
263 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(1) >> | 364 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(1) >> |
264 IntegerBitsPlusSign<Dst>::value); | 365 IntegerBitsPlusSign<Dst>::value); |
265 TEST_EXPECTED_VALUE( | 366 TEST_EXPECTED_VALUE( |
266 0, CheckedNumeric<Dst>(1) >> (IntegerBitsPlusSign<Dst>::value - 1)); | 367 0, CheckedNumeric<Dst>(1) >> (IntegerBitsPlusSign<Dst>::value - 1)); |
267 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(1) >> negative_one); | 368 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(1) >> negative_one); |
268 | 369 |
370 // Modulus is legal only for integers. | |
371 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>() % 1); | |
372 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) % 1); | |
373 TEST_EXPECTED_VALUE(-1, ClampedNumeric<Dst>(-1) % 2); | |
374 TEST_EXPECTED_VALUE(-1, ClampedNumeric<Dst>(-1) % -2); | |
375 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(DstLimits::lowest()) % 2); | |
376 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(DstLimits::max()) % 2); | |
377 // Test all the different modulus combinations. | |
378 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) % ClampedNumeric<Dst>(1)); | |
379 TEST_EXPECTED_VALUE(0, 1 % ClampedNumeric<Dst>(1)); | |
380 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) % 1); | |
381 ClampedNumeric<Dst> clamped_dst = 1; | |
382 TEST_EXPECTED_VALUE(0, clamped_dst %= 1); | |
383 TEST_EXPECTED_VALUE(Dst(1), ClampedNumeric<Dst>(1) % 0); | |
384 // Test bit shifts. | |
385 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
386 ClampedNumeric<Dst>(1) | |
387 << (IntegerBitsPlusSign<Dst>::value - 1U)); | |
388 TEST_EXPECTED_VALUE(Dst(0), ClampedNumeric<Dst>(0) | |
389 << (IntegerBitsPlusSign<Dst>::value + 0U)); | |
390 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
391 ClampedNumeric<Dst>(DstLimits::max()) << 1U); | |
392 TEST_EXPECTED_VALUE( | |
393 static_cast<Dst>(1) << (IntegerBitsPlusSign<Dst>::value - 2U), | |
394 ClampedNumeric<Dst>(1) << (IntegerBitsPlusSign<Dst>::value - 2U)); | |
395 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(0) | |
396 << (IntegerBitsPlusSign<Dst>::value - 1U)); | |
397 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) << 0U); | |
398 TEST_EXPECTED_VALUE(2, ClampedNumeric<Dst>(1) << 1U); | |
399 TEST_EXPECTED_VALUE( | |
400 0, ClampedNumeric<Dst>(1) >> (IntegerBitsPlusSign<Dst>::value + 0U)); | |
401 TEST_EXPECTED_VALUE( | |
402 0, ClampedNumeric<Dst>(1) >> (IntegerBitsPlusSign<Dst>::value - 1U)); | |
403 TEST_EXPECTED_VALUE( | |
404 -1, ClampedNumeric<Dst>(-1) >> (IntegerBitsPlusSign<Dst>::value - 1U)); | |
dcheng
2017/07/03 10:01:44
Nit: add a test case that lowest() saturates to -1
jschuh
2017/07/03 13:03:46
Done.
| |
405 | |
269 TestStrictPointerMath<Dst>(); | 406 TestStrictPointerMath<Dst>(); |
270 } | 407 } |
271 | 408 |
272 // Unsigned integer arithmetic. | 409 // Unsigned integer arithmetic. |
273 template <typename Dst> | 410 template <typename Dst> |
274 static void TestSpecializedArithmetic( | 411 static void TestSpecializedArithmetic( |
275 const char* dst, | 412 const char* dst, |
276 int line, | 413 int line, |
277 typename std::enable_if<numeric_limits<Dst>::is_integer && | 414 typename std::enable_if<numeric_limits<Dst>::is_integer && |
278 !numeric_limits<Dst>::is_signed, | 415 !numeric_limits<Dst>::is_signed, |
279 int>::type = 0) { | 416 int>::type = 0) { |
280 using DstLimits = numeric_limits<Dst>; | 417 using DstLimits = SaturationDefaultLimits<Dst>; |
281 TEST_EXPECTED_SUCCESS(-CheckedNumeric<Dst>(DstLimits::lowest())); | 418 TEST_EXPECTED_SUCCESS(-CheckedNumeric<Dst>(DstLimits::lowest())); |
282 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()).Abs()); | 419 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()).Abs()); |
283 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) + -1); | 420 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) + -1); |
284 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) - 1); | 421 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) - 1); |
285 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(DstLimits::lowest()) * 2); | 422 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(DstLimits::lowest()) * 2); |
286 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) / 2); | 423 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) / 2); |
287 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()).UnsignedAbs()); | 424 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()).UnsignedAbs()); |
288 TEST_EXPECTED_SUCCESS( | 425 TEST_EXPECTED_SUCCESS( |
289 CheckedNumeric<typename std::make_signed<Dst>::type>( | 426 CheckedNumeric<typename std::make_signed<Dst>::type>( |
290 std::numeric_limits<typename std::make_signed<Dst>::type>::lowest()) | 427 std::numeric_limits<typename std::make_signed<Dst>::type>::lowest()) |
291 .UnsignedAbs()); | 428 .UnsignedAbs()); |
292 TEST_EXPECTED_VALUE(DstLimits::lowest(), | 429 TEST_EXPECTED_VALUE(DstLimits::lowest(), |
293 MakeCheckedNum(DstLimits::lowest()).UnsignedAbs()); | 430 MakeCheckedNum(DstLimits::lowest()).UnsignedAbs()); |
294 TEST_EXPECTED_VALUE(DstLimits::max(), | 431 TEST_EXPECTED_VALUE(DstLimits::max(), |
295 MakeCheckedNum(DstLimits::max()).UnsignedAbs()); | 432 MakeCheckedNum(DstLimits::max()).UnsignedAbs()); |
296 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(0).UnsignedAbs()); | 433 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(0).UnsignedAbs()); |
297 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1).UnsignedAbs()); | 434 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1).UnsignedAbs()); |
298 | 435 |
436 TEST_EXPECTED_VALUE(0, -ClampedNumeric<Dst>(DstLimits::lowest())); | |
437 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(DstLimits::lowest()).Abs()); | |
438 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
439 ClampedNumeric<Dst>(DstLimits::lowest()) + -1); | |
440 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
441 ClampedNumeric<Dst>(DstLimits::lowest()) - 1); | |
442 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(DstLimits::lowest()) * 2); | |
443 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) / 2); | |
444 TEST_EXPECTED_VALUE(0, | |
445 ClampedNumeric<Dst>(DstLimits::lowest()).UnsignedAbs()); | |
446 TEST_EXPECTED_VALUE( | |
447 as_unsigned( | |
448 std::numeric_limits<typename std::make_signed<Dst>::type>::lowest()), | |
449 ClampedNumeric<typename std::make_signed<Dst>::type>( | |
450 std::numeric_limits<typename std::make_signed<Dst>::type>::lowest()) | |
451 .UnsignedAbs()); | |
452 TEST_EXPECTED_VALUE(DstLimits::lowest(), | |
453 MakeClampedNum(DstLimits::lowest()).UnsignedAbs()); | |
454 TEST_EXPECTED_VALUE(DstLimits::max(), | |
455 MakeClampedNum(DstLimits::max()).UnsignedAbs()); | |
456 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(0).UnsignedAbs()); | |
457 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1).UnsignedAbs()); | |
458 | |
299 // Modulus is legal only for integers. | 459 // Modulus is legal only for integers. |
300 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>() % 1); | 460 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>() % 1); |
301 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % 1); | 461 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % 1); |
302 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1) % 2); | 462 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1) % 2); |
303 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(DstLimits::lowest()) % 2); | 463 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(DstLimits::lowest()) % 2); |
304 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(DstLimits::max()) % 2); | 464 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(DstLimits::max()) % 2); |
305 // Test all the different modulus combinations. | 465 // Test all the different modulus combinations. |
306 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % CheckedNumeric<Dst>(1)); | 466 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % CheckedNumeric<Dst>(1)); |
307 TEST_EXPECTED_VALUE(0, 1 % CheckedNumeric<Dst>(1)); | 467 TEST_EXPECTED_VALUE(0, 1 % CheckedNumeric<Dst>(1)); |
308 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % 1); | 468 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) % 1); |
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343 TEST_EXPECTED_VALUE(std::numeric_limits<Dst>::max(), | 503 TEST_EXPECTED_VALUE(std::numeric_limits<Dst>::max(), |
344 CheckedNumeric<Dst>(0) | static_cast<Dst>(-1)); | 504 CheckedNumeric<Dst>(0) | static_cast<Dst>(-1)); |
345 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) ^ 1); | 505 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(1) ^ 1); |
346 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1) ^ 0); | 506 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1) ^ 0); |
347 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(0) ^ 1); | 507 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(0) ^ 1); |
348 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(0) ^ 0); | 508 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>(0) ^ 0); |
349 TEST_EXPECTED_VALUE(std::numeric_limits<Dst>::max(), | 509 TEST_EXPECTED_VALUE(std::numeric_limits<Dst>::max(), |
350 CheckedNumeric<Dst>(0) ^ static_cast<Dst>(-1)); | 510 CheckedNumeric<Dst>(0) ^ static_cast<Dst>(-1)); |
351 TEST_EXPECTED_VALUE(DstLimits::max(), ~CheckedNumeric<Dst>(0)); | 511 TEST_EXPECTED_VALUE(DstLimits::max(), ~CheckedNumeric<Dst>(0)); |
352 | 512 |
513 // Modulus is legal only for integers. | |
514 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>() % 1); | |
515 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) % 1); | |
516 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) % 2); | |
517 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(DstLimits::lowest()) % 2); | |
518 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(DstLimits::max()) % 2); | |
519 // Test all the different modulus combinations. | |
520 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) % ClampedNumeric<Dst>(1)); | |
521 TEST_EXPECTED_VALUE(0, 1 % ClampedNumeric<Dst>(1)); | |
522 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) % 1); | |
523 ClampedNumeric<Dst> clamped_dst = 1; | |
524 TEST_EXPECTED_VALUE(0, clamped_dst %= 1); | |
525 // Test that div by 0 is avoided but returns invalid result. | |
526 TEST_EXPECTED_VALUE(Dst(1), ClampedNumeric<Dst>(1) % 0); | |
527 // Test bit shifts. | |
528 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
529 ClampedNumeric<Dst>(1) | |
530 << as_unsigned(IntegerBitsPlusSign<Dst>::value)); | |
531 TEST_EXPECTED_VALUE(Dst(0), ClampedNumeric<Dst>(0) << as_unsigned( | |
532 IntegerBitsPlusSign<Dst>::value)); | |
533 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
534 ClampedNumeric<Dst>(DstLimits::max()) << 1U); | |
535 TEST_EXPECTED_VALUE( | |
536 static_cast<Dst>(1) << (IntegerBitsPlusSign<Dst>::value - 1U), | |
537 ClampedNumeric<Dst>(1) << (IntegerBitsPlusSign<Dst>::value - 1U)); | |
538 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) << 0U); | |
539 TEST_EXPECTED_VALUE(2, ClampedNumeric<Dst>(1) << 1U); | |
540 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) >> | |
541 as_unsigned(IntegerBitsPlusSign<Dst>::value)); | |
542 TEST_EXPECTED_VALUE( | |
543 0, ClampedNumeric<Dst>(1) >> (IntegerBitsPlusSign<Dst>::value - 1U)); | |
544 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) & 1); | |
545 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) & 0); | |
546 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(0) & 1); | |
547 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) & 0); | |
548 TEST_EXPECTED_VALUE(std::numeric_limits<Dst>::max(), | |
549 MakeClampedNum(DstLimits::max()) & -1); | |
550 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) | 1); | |
551 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) | 0); | |
552 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(0) | 1); | |
553 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(0) | 0); | |
554 TEST_EXPECTED_VALUE(std::numeric_limits<Dst>::max(), | |
555 ClampedNumeric<Dst>(0) | static_cast<Dst>(-1)); | |
556 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) ^ 1); | |
557 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) ^ 0); | |
558 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(0) ^ 1); | |
559 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(0) ^ 0); | |
560 TEST_EXPECTED_VALUE(std::numeric_limits<Dst>::max(), | |
561 ClampedNumeric<Dst>(0) ^ static_cast<Dst>(-1)); | |
562 TEST_EXPECTED_VALUE(DstLimits::max(), ~ClampedNumeric<Dst>(0)); | |
563 | |
353 TestStrictPointerMath<Dst>(); | 564 TestStrictPointerMath<Dst>(); |
354 } | 565 } |
355 | 566 |
356 // Floating point arithmetic. | 567 // Floating point arithmetic. |
357 template <typename Dst> | 568 template <typename Dst> |
358 void TestSpecializedArithmetic( | 569 void TestSpecializedArithmetic( |
359 const char* dst, | 570 const char* dst, |
360 int line, | 571 int line, |
361 typename std::enable_if<numeric_limits<Dst>::is_iec559, int>::type = 0) { | 572 typename std::enable_if<numeric_limits<Dst>::is_iec559, int>::type = 0) { |
362 using DstLimits = numeric_limits<Dst>; | 573 using DstLimits = SaturationDefaultLimits<Dst>; |
363 TEST_EXPECTED_SUCCESS(-CheckedNumeric<Dst>(DstLimits::lowest())); | 574 TEST_EXPECTED_SUCCESS(-CheckedNumeric<Dst>(DstLimits::lowest())); |
364 | 575 |
365 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()).Abs()); | 576 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()).Abs()); |
366 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(-1).Abs()); | 577 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(-1).Abs()); |
367 | 578 |
368 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()) + -1); | 579 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()) + -1); |
369 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::max()) + 1); | 580 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::max()) + 1); |
370 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) + | 581 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) + |
371 DstLimits::lowest()); | 582 DstLimits::lowest()); |
372 | 583 |
373 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) - | 584 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) - |
374 DstLimits::lowest()); | 585 DstLimits::lowest()); |
375 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) - | 586 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) - |
376 DstLimits::max()); | 587 DstLimits::max()); |
377 | 588 |
378 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) * 2); | 589 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::lowest()) * 2); |
379 | 590 |
380 TEST_EXPECTED_VALUE(-0.5, CheckedNumeric<Dst>(-1.0) / 2); | 591 TEST_EXPECTED_VALUE(-0.5, CheckedNumeric<Dst>(-1.0) / 2); |
592 | |
593 TEST_EXPECTED_VALUE(DstLimits::max(), | |
594 -ClampedNumeric<Dst>(DstLimits::lowest())); | |
595 | |
596 TEST_EXPECTED_VALUE(DstLimits::max(), | |
597 ClampedNumeric<Dst>(DstLimits::lowest()).Abs()); | |
598 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(-1).Abs()); | |
599 | |
600 TEST_EXPECTED_VALUE(DstLimits::lowest() - 1, | |
601 ClampedNumeric<Dst>(DstLimits::lowest()) + -1); | |
602 TEST_EXPECTED_VALUE(DstLimits::max() + 1, | |
603 ClampedNumeric<Dst>(DstLimits::max()) + 1); | |
604 TEST_EXPECTED_VALUE( | |
605 DstLimits::Underflow(), | |
606 ClampedNumeric<Dst>(DstLimits::lowest()) + DstLimits::lowest()); | |
607 | |
608 TEST_EXPECTED_VALUE( | |
609 DstLimits::Overflow(), | |
610 ClampedNumeric<Dst>(DstLimits::max()) - DstLimits::lowest()); | |
611 TEST_EXPECTED_VALUE( | |
612 DstLimits::Underflow(), | |
613 ClampedNumeric<Dst>(DstLimits::lowest()) - DstLimits::max()); | |
614 | |
615 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
616 ClampedNumeric<Dst>(DstLimits::lowest()) * 2); | |
617 | |
618 TEST_EXPECTED_VALUE(-0.5, ClampedNumeric<Dst>(-1.0) / 2); | |
381 } | 619 } |
382 | 620 |
383 // Generic arithmetic tests. | 621 // Generic arithmetic tests. |
384 template <typename Dst> | 622 template <typename Dst> |
385 static void TestArithmetic(const char* dst, int line) { | 623 static void TestArithmetic(const char* dst, int line) { |
386 using DstLimits = numeric_limits<Dst>; | 624 using DstLimits = SaturationDefaultLimits<Dst>; |
387 | 625 |
388 EXPECT_EQ(true, CheckedNumeric<Dst>().IsValid()); | 626 EXPECT_EQ(true, CheckedNumeric<Dst>().IsValid()); |
389 EXPECT_EQ(false, | 627 EXPECT_EQ(false, |
390 CheckedNumeric<Dst>(CheckedNumeric<Dst>(DstLimits::max()) * | 628 CheckedNumeric<Dst>(CheckedNumeric<Dst>(DstLimits::max()) * |
391 DstLimits::max()).IsValid()); | 629 DstLimits::max()).IsValid()); |
392 EXPECT_EQ(static_cast<Dst>(0), CheckedNumeric<Dst>().ValueOrDie()); | 630 EXPECT_EQ(static_cast<Dst>(0), CheckedNumeric<Dst>().ValueOrDie()); |
393 EXPECT_EQ(static_cast<Dst>(0), CheckedNumeric<Dst>().ValueOrDefault(1)); | 631 EXPECT_EQ(static_cast<Dst>(0), CheckedNumeric<Dst>().ValueOrDefault(1)); |
394 EXPECT_EQ(static_cast<Dst>(1), | 632 EXPECT_EQ(static_cast<Dst>(1), |
395 CheckedNumeric<Dst>(CheckedNumeric<Dst>(DstLimits::max()) * | 633 CheckedNumeric<Dst>(CheckedNumeric<Dst>(DstLimits::max()) * |
396 DstLimits::max()).ValueOrDefault(1)); | 634 DstLimits::max()).ValueOrDefault(1)); |
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410 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1) / 1); | 648 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1) / 1); |
411 CheckedNumeric<Dst> checked_dst = 1; | 649 CheckedNumeric<Dst> checked_dst = 1; |
412 TEST_EXPECTED_VALUE(2, checked_dst += 1); | 650 TEST_EXPECTED_VALUE(2, checked_dst += 1); |
413 checked_dst = 1; | 651 checked_dst = 1; |
414 TEST_EXPECTED_VALUE(0, checked_dst -= 1); | 652 TEST_EXPECTED_VALUE(0, checked_dst -= 1); |
415 checked_dst = 1; | 653 checked_dst = 1; |
416 TEST_EXPECTED_VALUE(1, checked_dst *= 1); | 654 TEST_EXPECTED_VALUE(1, checked_dst *= 1); |
417 checked_dst = 1; | 655 checked_dst = 1; |
418 TEST_EXPECTED_VALUE(1, checked_dst /= 1); | 656 TEST_EXPECTED_VALUE(1, checked_dst /= 1); |
419 | 657 |
658 TEST_EXPECTED_VALUE(2, ClampedNumeric<Dst>(1) + ClampedNumeric<Dst>(1)); | |
659 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) - ClampedNumeric<Dst>(1)); | |
660 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) * ClampedNumeric<Dst>(1)); | |
661 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) / ClampedNumeric<Dst>(1)); | |
662 TEST_EXPECTED_VALUE(2, 1 + ClampedNumeric<Dst>(1)); | |
663 TEST_EXPECTED_VALUE(0, 1 - ClampedNumeric<Dst>(1)); | |
664 TEST_EXPECTED_VALUE(1, 1 * ClampedNumeric<Dst>(1)); | |
665 TEST_EXPECTED_VALUE(1, 1 / ClampedNumeric<Dst>(1)); | |
666 TEST_EXPECTED_VALUE(2, ClampedNumeric<Dst>(1) + 1); | |
667 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(1) - 1); | |
668 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) * 1); | |
669 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) / 1); | |
670 ClampedNumeric<Dst> clamped_dst = 1; | |
671 TEST_EXPECTED_VALUE(2, clamped_dst += 1); | |
672 clamped_dst = 1; | |
673 TEST_EXPECTED_VALUE(0, clamped_dst -= 1); | |
674 clamped_dst = 1; | |
675 TEST_EXPECTED_VALUE(1, clamped_dst *= 1); | |
676 clamped_dst = 1; | |
677 TEST_EXPECTED_VALUE(1, clamped_dst /= 1); | |
678 | |
420 // Generic negation. | 679 // Generic negation. |
421 if (DstLimits::is_signed) { | 680 if (DstLimits::is_signed) { |
422 TEST_EXPECTED_VALUE(0, -CheckedNumeric<Dst>()); | 681 TEST_EXPECTED_VALUE(0, -CheckedNumeric<Dst>()); |
423 TEST_EXPECTED_VALUE(-1, -CheckedNumeric<Dst>(1)); | 682 TEST_EXPECTED_VALUE(-1, -CheckedNumeric<Dst>(1)); |
424 TEST_EXPECTED_VALUE(1, -CheckedNumeric<Dst>(-1)); | 683 TEST_EXPECTED_VALUE(1, -CheckedNumeric<Dst>(-1)); |
425 TEST_EXPECTED_VALUE(static_cast<Dst>(DstLimits::max() * -1), | 684 TEST_EXPECTED_VALUE(static_cast<Dst>(DstLimits::max() * -1), |
426 -CheckedNumeric<Dst>(DstLimits::max())); | 685 -CheckedNumeric<Dst>(DstLimits::max())); |
686 | |
687 TEST_EXPECTED_VALUE(0, -ClampedNumeric<Dst>()); | |
688 TEST_EXPECTED_VALUE(-1, -ClampedNumeric<Dst>(1)); | |
689 TEST_EXPECTED_VALUE(1, -ClampedNumeric<Dst>(-1)); | |
690 TEST_EXPECTED_VALUE(static_cast<Dst>(DstLimits::max() * -1), | |
691 -ClampedNumeric<Dst>(DstLimits::max())); | |
427 } | 692 } |
428 | 693 |
429 // Generic absolute value. | 694 // Generic absolute value. |
430 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>().Abs()); | 695 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>().Abs()); |
431 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1).Abs()); | 696 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1).Abs()); |
432 TEST_EXPECTED_VALUE(DstLimits::max(), | 697 TEST_EXPECTED_VALUE(DstLimits::max(), |
433 CheckedNumeric<Dst>(DstLimits::max()).Abs()); | 698 CheckedNumeric<Dst>(DstLimits::max()).Abs()); |
434 | 699 |
700 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>().Abs()); | |
701 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1).Abs()); | |
702 TEST_EXPECTED_VALUE(DstLimits::max(), | |
703 ClampedNumeric<Dst>(DstLimits::max()).Abs()); | |
704 | |
435 // Generic addition. | 705 // Generic addition. |
436 TEST_EXPECTED_VALUE(1, (CheckedNumeric<Dst>() + 1)); | 706 TEST_EXPECTED_VALUE(1, (CheckedNumeric<Dst>() + 1)); |
437 TEST_EXPECTED_VALUE(2, (CheckedNumeric<Dst>(1) + 1)); | 707 TEST_EXPECTED_VALUE(2, (CheckedNumeric<Dst>(1) + 1)); |
438 if (numeric_limits<Dst>::is_signed) | 708 if (numeric_limits<Dst>::is_signed) |
439 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>(-1) + 1)); | 709 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>(-1) + 1)); |
440 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()) + 1); | 710 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::lowest()) + 1); |
441 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) + | 711 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) + |
442 DstLimits::max()); | 712 DstLimits::max()); |
443 | 713 |
714 TEST_EXPECTED_VALUE(1, (ClampedNumeric<Dst>() + 1)); | |
715 TEST_EXPECTED_VALUE(2, (ClampedNumeric<Dst>(1) + 1)); | |
716 if (numeric_limits<Dst>::is_signed) | |
717 TEST_EXPECTED_VALUE(0, (ClampedNumeric<Dst>(-1) + 1)); | |
718 TEST_EXPECTED_VALUE(DstLimits::lowest() + 1, | |
719 ClampedNumeric<Dst>(DstLimits::lowest()) + 1); | |
720 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
721 ClampedNumeric<Dst>(DstLimits::max()) + DstLimits::max()); | |
722 | |
444 // Generic subtraction. | 723 // Generic subtraction. |
445 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>(1) - 1)); | 724 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>(1) - 1)); |
446 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::max()) - 1); | 725 TEST_EXPECTED_SUCCESS(CheckedNumeric<Dst>(DstLimits::max()) - 1); |
447 if (numeric_limits<Dst>::is_signed) { | 726 if (numeric_limits<Dst>::is_signed) { |
448 TEST_EXPECTED_VALUE(-1, (CheckedNumeric<Dst>() - 1)); | 727 TEST_EXPECTED_VALUE(-1, (CheckedNumeric<Dst>() - 1)); |
449 TEST_EXPECTED_VALUE(-2, (CheckedNumeric<Dst>(-1) - 1)); | 728 TEST_EXPECTED_VALUE(-2, (CheckedNumeric<Dst>(-1) - 1)); |
450 } else { | 729 } else { |
451 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) - -1); | 730 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) - -1); |
452 } | 731 } |
453 | 732 |
733 TEST_EXPECTED_VALUE(0, (ClampedNumeric<Dst>(1) - 1)); | |
734 TEST_EXPECTED_VALUE(DstLimits::max() - 1, | |
735 ClampedNumeric<Dst>(DstLimits::max()) - 1); | |
736 if (numeric_limits<Dst>::is_signed) { | |
737 TEST_EXPECTED_VALUE(-1, (ClampedNumeric<Dst>() - 1)); | |
738 TEST_EXPECTED_VALUE(-2, (ClampedNumeric<Dst>(-1) - 1)); | |
739 } else { | |
740 TEST_EXPECTED_VALUE(DstLimits::max(), | |
741 ClampedNumeric<Dst>(DstLimits::max()) - -1); | |
742 } | |
743 | |
454 // Generic multiplication. | 744 // Generic multiplication. |
455 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>() * 1)); | 745 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>() * 1)); |
456 TEST_EXPECTED_VALUE(1, (CheckedNumeric<Dst>(1) * 1)); | 746 TEST_EXPECTED_VALUE(1, (CheckedNumeric<Dst>(1) * 1)); |
457 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>(0) * 0)); | 747 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>(0) * 0)); |
458 if (numeric_limits<Dst>::is_signed) { | 748 if (numeric_limits<Dst>::is_signed) { |
459 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>(-1) * 0)); | 749 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>(-1) * 0)); |
460 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>(0) * -1)); | 750 TEST_EXPECTED_VALUE(0, (CheckedNumeric<Dst>(0) * -1)); |
461 TEST_EXPECTED_VALUE(-2, (CheckedNumeric<Dst>(-1) * 2)); | 751 TEST_EXPECTED_VALUE(-2, (CheckedNumeric<Dst>(-1) * 2)); |
462 } else { | 752 } else { |
463 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) * -2); | 753 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) * -2); |
464 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) * | 754 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) * |
465 CheckedNumeric<uintmax_t>(-2)); | 755 CheckedNumeric<uintmax_t>(-2)); |
466 } | 756 } |
467 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) * | 757 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(DstLimits::max()) * |
468 DstLimits::max()); | 758 DstLimits::max()); |
469 | 759 |
760 TEST_EXPECTED_VALUE(0, (ClampedNumeric<Dst>() * 1)); | |
761 TEST_EXPECTED_VALUE(1, (ClampedNumeric<Dst>(1) * 1)); | |
762 TEST_EXPECTED_VALUE(0, (ClampedNumeric<Dst>(0) * 0)); | |
763 if (numeric_limits<Dst>::is_signed) { | |
764 TEST_EXPECTED_VALUE(0, (ClampedNumeric<Dst>(-1) * 0)); | |
765 TEST_EXPECTED_VALUE(0, (ClampedNumeric<Dst>(0) * -1)); | |
766 TEST_EXPECTED_VALUE(-2, (ClampedNumeric<Dst>(-1) * 2)); | |
767 } else { | |
768 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
769 ClampedNumeric<Dst>(DstLimits::max()) * -2); | |
770 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(DstLimits::max()) * | |
771 ClampedNumeric<uintmax_t>(-2)); | |
772 } | |
773 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
774 ClampedNumeric<Dst>(DstLimits::max()) * DstLimits::max()); | |
775 | |
470 // Generic division. | 776 // Generic division. |
471 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>() / 1); | 777 TEST_EXPECTED_VALUE(0, CheckedNumeric<Dst>() / 1); |
472 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1) / 1); | 778 TEST_EXPECTED_VALUE(1, CheckedNumeric<Dst>(1) / 1); |
473 TEST_EXPECTED_VALUE(DstLimits::lowest() / 2, | 779 TEST_EXPECTED_VALUE(DstLimits::lowest() / 2, |
474 CheckedNumeric<Dst>(DstLimits::lowest()) / 2); | 780 CheckedNumeric<Dst>(DstLimits::lowest()) / 2); |
475 TEST_EXPECTED_VALUE(DstLimits::max() / 2, | 781 TEST_EXPECTED_VALUE(DstLimits::max() / 2, |
476 CheckedNumeric<Dst>(DstLimits::max()) / 2); | 782 CheckedNumeric<Dst>(DstLimits::max()) / 2); |
783 TEST_EXPECTED_FAILURE(CheckedNumeric<Dst>(1) / 0); | |
784 | |
785 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>() / 1); | |
786 TEST_EXPECTED_VALUE(1, ClampedNumeric<Dst>(1) / 1); | |
787 TEST_EXPECTED_VALUE(DstLimits::lowest() / 2, | |
788 ClampedNumeric<Dst>(DstLimits::lowest()) / 2); | |
789 TEST_EXPECTED_VALUE(DstLimits::max() / 2, | |
790 ClampedNumeric<Dst>(DstLimits::max()) / 2); | |
791 TEST_EXPECTED_VALUE(DstLimits::Overflow(), ClampedNumeric<Dst>(1) / 0); | |
792 TEST_EXPECTED_VALUE(DstLimits::Underflow(), ClampedNumeric<Dst>(-1) / 0); | |
793 TEST_EXPECTED_VALUE(0, ClampedNumeric<Dst>(0) / 0); | |
dcheng
2017/07/03 10:01:44
Please update the documentation for clamped divisi
jschuh
2017/07/03 13:03:46
Done.
| |
477 | 794 |
478 TestSpecializedArithmetic<Dst>(dst, line); | 795 TestSpecializedArithmetic<Dst>(dst, line); |
479 } | 796 } |
480 | 797 |
481 // Helper macro to wrap displaying the conversion types and line numbers. | 798 // Helper macro to wrap displaying the conversion types and line numbers. |
482 #define TEST_ARITHMETIC(Dst) TestArithmetic<Dst>(#Dst, __LINE__) | 799 #define TEST_ARITHMETIC(Dst) TestArithmetic<Dst>(#Dst, __LINE__) |
483 | 800 |
484 TEST(SafeNumerics, SignedIntegerMath) { | 801 TEST(SafeNumerics, SignedIntegerMath) { |
485 TEST_ARITHMETIC(int8_t); | 802 TEST_ARITHMETIC(int8_t); |
486 TEST_ARITHMETIC(int); | 803 TEST_ARITHMETIC(int); |
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598 DstLimits::max(), SrcLimits::lowest()) | 915 DstLimits::max(), SrcLimits::lowest()) |
599 .ValueOrDie()); | 916 .ValueOrDie()); |
600 EXPECT_EQ(DstLimits::max(), CheckMax(MakeStrictNum(1), MakeCheckedNum(0), | 917 EXPECT_EQ(DstLimits::max(), CheckMax(MakeStrictNum(1), MakeCheckedNum(0), |
601 DstLimits::max(), SrcLimits::lowest()) | 918 DstLimits::max(), SrcLimits::lowest()) |
602 .ValueOrDie()); | 919 .ValueOrDie()); |
603 } | 920 } |
604 | 921 |
605 template <typename Dst, typename Src> | 922 template <typename Dst, typename Src> |
606 struct TestNumericConversion<Dst, Src, SIGN_PRESERVING_VALUE_PRESERVING> { | 923 struct TestNumericConversion<Dst, Src, SIGN_PRESERVING_VALUE_PRESERVING> { |
607 static void Test(const char *dst, const char *src, int line) { | 924 static void Test(const char *dst, const char *src, int line) { |
608 using SrcLimits = numeric_limits<Src>; | 925 using SrcLimits = SaturationDefaultLimits<Src>; |
609 using DstLimits = numeric_limits<Dst>; | 926 using DstLimits = SaturationDefaultLimits<Dst>; |
610 // Integral to floating. | 927 // Integral to floating. |
611 static_assert((DstLimits::is_iec559 && SrcLimits::is_integer) || | 928 static_assert((DstLimits::is_iec559 && SrcLimits::is_integer) || |
612 // Not floating to integral and... | 929 // Not floating to integral and... |
613 (!(DstLimits::is_integer && SrcLimits::is_iec559) && | 930 (!(DstLimits::is_integer && SrcLimits::is_iec559) && |
614 // Same sign, same numeric, source is narrower or same. | 931 // Same sign, same numeric, source is narrower or same. |
615 ((SrcLimits::is_signed == DstLimits::is_signed && | 932 ((SrcLimits::is_signed == DstLimits::is_signed && |
616 MaxExponent<Dst>::value >= MaxExponent<Src>::value) || | 933 MaxExponent<Dst>::value >= MaxExponent<Src>::value) || |
617 // Or signed destination and source is smaller | 934 // Or signed destination and source is smaller |
618 (DstLimits::is_signed && | 935 (DstLimits::is_signed && |
619 MaxExponent<Dst>::value >= MaxExponent<Src>::value))), | 936 MaxExponent<Dst>::value >= MaxExponent<Src>::value))), |
620 "Comparison must be sign preserving and value preserving"); | 937 "Comparison must be sign preserving and value preserving"); |
621 | 938 |
622 TestStrictComparison<Dst, Src>(); | 939 TestStrictComparison<Dst, Src>(); |
623 | 940 |
624 const CheckedNumeric<Dst> checked_dst = SrcLimits::max(); | 941 const CheckedNumeric<Dst> checked_dst = SrcLimits::max(); |
942 const ClampedNumeric<Dst> clamped_dst = SrcLimits::max(); | |
625 TEST_EXPECTED_SUCCESS(checked_dst); | 943 TEST_EXPECTED_SUCCESS(checked_dst); |
944 TEST_EXPECTED_VALUE(Dst(SrcLimits::max()), clamped_dst); | |
626 if (MaxExponent<Dst>::value > MaxExponent<Src>::value) { | 945 if (MaxExponent<Dst>::value > MaxExponent<Src>::value) { |
627 if (MaxExponent<Dst>::value >= MaxExponent<Src>::value * 2 - 1) { | 946 if (MaxExponent<Dst>::value >= MaxExponent<Src>::value * 2 - 1) { |
628 // At least twice larger type. | 947 // At least twice larger type. |
629 TEST_EXPECTED_SUCCESS(SrcLimits::max() * checked_dst); | 948 TEST_EXPECTED_SUCCESS(SrcLimits::max() * checked_dst); |
630 | 949 TEST_EXPECTED_VALUE(SrcLimits::max() * clamped_dst, |
950 Dst(SrcLimits::max()) * SrcLimits::max()); | |
631 } else { // Larger, but not at least twice as large. | 951 } else { // Larger, but not at least twice as large. |
632 TEST_EXPECTED_FAILURE(SrcLimits::max() * checked_dst); | 952 TEST_EXPECTED_FAILURE(SrcLimits::max() * checked_dst); |
633 TEST_EXPECTED_SUCCESS(checked_dst + 1); | 953 TEST_EXPECTED_SUCCESS(checked_dst + 1); |
954 TEST_EXPECTED_VALUE(DstLimits::Overflow(), | |
955 SrcLimits::max() * clamped_dst); | |
956 TEST_EXPECTED_VALUE(Dst(SrcLimits::max()) + Dst(1), | |
957 clamped_dst + Dst(1)); | |
634 } | 958 } |
635 } else { // Same width type. | 959 } else { // Same width type. |
636 TEST_EXPECTED_FAILURE(checked_dst + 1); | 960 TEST_EXPECTED_FAILURE(checked_dst + 1); |
961 TEST_EXPECTED_VALUE(DstLimits::Overflow(), clamped_dst + Dst(1)); | |
637 } | 962 } |
638 | 963 |
639 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::max()); | 964 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::max()); |
640 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(1)); | 965 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(1)); |
641 if (SrcLimits::is_iec559) { | 966 if (SrcLimits::is_iec559) { |
642 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::max() * static_cast<Src>(-1)); | 967 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::max() * static_cast<Src>(-1)); |
643 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::infinity()); | 968 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::infinity()); |
644 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::infinity() * -1); | 969 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::infinity() * -1); |
645 TEST_EXPECTED_RANGE(RANGE_INVALID, SrcLimits::quiet_NaN()); | 970 TEST_EXPECTED_RANGE(RANGE_INVALID, SrcLimits::quiet_NaN()); |
646 } else if (numeric_limits<Src>::is_signed) { | 971 } else if (numeric_limits<Src>::is_signed) { |
647 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(-1)); | 972 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(-1)); |
648 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::lowest()); | 973 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::lowest()); |
649 } | 974 } |
650 } | 975 } |
651 }; | 976 }; |
652 | 977 |
653 template <typename Dst, typename Src> | 978 template <typename Dst, typename Src> |
654 struct TestNumericConversion<Dst, Src, SIGN_PRESERVING_NARROW> { | 979 struct TestNumericConversion<Dst, Src, SIGN_PRESERVING_NARROW> { |
655 static void Test(const char *dst, const char *src, int line) { | 980 static void Test(const char *dst, const char *src, int line) { |
656 using SrcLimits = numeric_limits<Src>; | 981 using SrcLimits = SaturationDefaultLimits<Src>; |
657 using DstLimits = numeric_limits<Dst>; | 982 using DstLimits = SaturationDefaultLimits<Dst>; |
658 static_assert(SrcLimits::is_signed == DstLimits::is_signed, | 983 static_assert(SrcLimits::is_signed == DstLimits::is_signed, |
659 "Destination and source sign must be the same"); | 984 "Destination and source sign must be the same"); |
660 static_assert(MaxExponent<Dst>::value <= MaxExponent<Src>::value, | 985 static_assert(MaxExponent<Dst>::value <= MaxExponent<Src>::value, |
661 "Destination must be narrower than source"); | 986 "Destination must be narrower than source"); |
662 | 987 |
663 TestStrictComparison<Dst, Src>(); | 988 TestStrictComparison<Dst, Src>(); |
664 | 989 |
665 const CheckedNumeric<Dst> checked_dst; | 990 const CheckedNumeric<Dst> checked_dst; |
666 TEST_EXPECTED_FAILURE(checked_dst + SrcLimits::max()); | 991 TEST_EXPECTED_FAILURE(checked_dst + SrcLimits::max()); |
667 TEST_EXPECTED_VALUE(1, checked_dst + static_cast<Src>(1)); | 992 TEST_EXPECTED_VALUE(1, checked_dst + Src(1)); |
668 TEST_EXPECTED_FAILURE(checked_dst - SrcLimits::max()); | 993 TEST_EXPECTED_FAILURE(checked_dst - SrcLimits::max()); |
669 | 994 |
995 const ClampedNumeric<Dst> clamped_dst; | |
996 TEST_EXPECTED_VALUE(DstLimits::Overflow(), clamped_dst + SrcLimits::max()); | |
997 TEST_EXPECTED_VALUE(1, clamped_dst + Src(1)); | |
998 TEST_EXPECTED_VALUE(DstLimits::Underflow(), clamped_dst - SrcLimits::max()); | |
999 | |
670 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::max()); | 1000 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::max()); |
671 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(1)); | 1001 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(1)); |
672 if (SrcLimits::is_iec559) { | 1002 if (SrcLimits::is_iec559) { |
673 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::max() * -1); | 1003 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::max() * -1); |
674 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(-1)); | 1004 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(-1)); |
675 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::infinity()); | 1005 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::infinity()); |
676 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::infinity() * -1); | 1006 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::infinity() * -1); |
677 TEST_EXPECTED_RANGE(RANGE_INVALID, SrcLimits::quiet_NaN()); | 1007 TEST_EXPECTED_RANGE(RANGE_INVALID, SrcLimits::quiet_NaN()); |
678 if (DstLimits::is_integer) { | 1008 if (DstLimits::is_integer) { |
679 if (SrcLimits::digits < DstLimits::digits) { | 1009 if (SrcLimits::digits < DstLimits::digits) { |
680 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, | 1010 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, |
681 static_cast<Src>(DstLimits::max())); | 1011 static_cast<Src>(DstLimits::max())); |
682 } else { | 1012 } else { |
683 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(DstLimits::max())); | 1013 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(DstLimits::max())); |
684 } | 1014 } |
685 TEST_EXPECTED_RANGE( | 1015 TEST_EXPECTED_RANGE( |
686 RANGE_VALID, | 1016 RANGE_VALID, |
687 static_cast<Src>(GetMaxConvertibleToFloat<Src, Dst>())); | 1017 static_cast<Src>(GetMaxConvertibleToFloat<Src, Dst>())); |
688 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(DstLimits::lowest())); | 1018 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(DstLimits::lowest())); |
689 } | 1019 } |
690 } else if (SrcLimits::is_signed) { | 1020 } else if (SrcLimits::is_signed) { |
691 TEST_EXPECTED_VALUE(-1, checked_dst - static_cast<Src>(1)); | 1021 TEST_EXPECTED_VALUE(-1, checked_dst - static_cast<Src>(1)); |
1022 TEST_EXPECTED_VALUE(-1, clamped_dst - static_cast<Src>(1)); | |
692 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::lowest()); | 1023 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::lowest()); |
693 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(-1)); | 1024 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(-1)); |
694 } else { | 1025 } else { |
695 TEST_EXPECTED_FAILURE(checked_dst - static_cast<Src>(1)); | 1026 TEST_EXPECTED_FAILURE(checked_dst - static_cast<Src>(1)); |
1027 TEST_EXPECTED_VALUE(Dst(0), clamped_dst - static_cast<Src>(1)); | |
696 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::lowest()); | 1028 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::lowest()); |
697 } | 1029 } |
698 } | 1030 } |
699 }; | 1031 }; |
700 | 1032 |
701 template <typename Dst, typename Src> | 1033 template <typename Dst, typename Src> |
702 struct TestNumericConversion<Dst, Src, SIGN_TO_UNSIGN_WIDEN_OR_EQUAL> { | 1034 struct TestNumericConversion<Dst, Src, SIGN_TO_UNSIGN_WIDEN_OR_EQUAL> { |
703 static void Test(const char *dst, const char *src, int line) { | 1035 static void Test(const char *dst, const char *src, int line) { |
704 using SrcLimits = numeric_limits<Src>; | 1036 using SrcLimits = SaturationDefaultLimits<Src>; |
705 using DstLimits = numeric_limits<Dst>; | 1037 using DstLimits = SaturationDefaultLimits<Dst>; |
706 static_assert(MaxExponent<Dst>::value >= MaxExponent<Src>::value, | 1038 static_assert(MaxExponent<Dst>::value >= MaxExponent<Src>::value, |
707 "Destination must be equal or wider than source."); | 1039 "Destination must be equal or wider than source."); |
708 static_assert(SrcLimits::is_signed, "Source must be signed"); | 1040 static_assert(SrcLimits::is_signed, "Source must be signed"); |
709 static_assert(!DstLimits::is_signed, "Destination must be unsigned"); | 1041 static_assert(!DstLimits::is_signed, "Destination must be unsigned"); |
710 | 1042 |
711 TestStrictComparison<Dst, Src>(); | 1043 TestStrictComparison<Dst, Src>(); |
712 | 1044 |
713 const CheckedNumeric<Dst> checked_dst; | 1045 const CheckedNumeric<Dst> checked_dst; |
714 TEST_EXPECTED_VALUE(SrcLimits::max(), checked_dst + SrcLimits::max()); | 1046 TEST_EXPECTED_VALUE(SrcLimits::max(), checked_dst + SrcLimits::max()); |
715 TEST_EXPECTED_FAILURE(checked_dst + static_cast<Src>(-1)); | 1047 TEST_EXPECTED_FAILURE(checked_dst + static_cast<Src>(-1)); |
1048 TEST_EXPECTED_SUCCESS(checked_dst * static_cast<Src>(-1)); | |
716 TEST_EXPECTED_FAILURE(checked_dst + SrcLimits::lowest()); | 1049 TEST_EXPECTED_FAILURE(checked_dst + SrcLimits::lowest()); |
717 | 1050 |
1051 const ClampedNumeric<Dst> clamped_dst; | |
1052 TEST_EXPECTED_VALUE(SrcLimits::max(), clamped_dst + SrcLimits::max()); | |
1053 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
1054 clamped_dst + static_cast<Src>(-1)); | |
1055 TEST_EXPECTED_VALUE(0, clamped_dst * static_cast<Src>(-1)); | |
1056 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
1057 clamped_dst + SrcLimits::lowest()); | |
1058 | |
718 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::lowest()); | 1059 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::lowest()); |
719 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::max()); | 1060 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::max()); |
720 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(1)); | 1061 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(1)); |
721 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, static_cast<Src>(-1)); | 1062 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, static_cast<Src>(-1)); |
722 } | 1063 } |
723 }; | 1064 }; |
724 | 1065 |
725 template <typename Dst, typename Src> | 1066 template <typename Dst, typename Src> |
726 struct TestNumericConversion<Dst, Src, SIGN_TO_UNSIGN_NARROW> { | 1067 struct TestNumericConversion<Dst, Src, SIGN_TO_UNSIGN_NARROW> { |
727 static void Test(const char *dst, const char *src, int line) { | 1068 static void Test(const char *dst, const char *src, int line) { |
728 using SrcLimits = numeric_limits<Src>; | 1069 using SrcLimits = SaturationDefaultLimits<Src>; |
729 using DstLimits = numeric_limits<Dst>; | 1070 using DstLimits = SaturationDefaultLimits<Dst>; |
730 static_assert(MaxExponent<Dst>::value < MaxExponent<Src>::value, | 1071 static_assert(MaxExponent<Dst>::value < MaxExponent<Src>::value, |
731 "Destination must be narrower than source."); | 1072 "Destination must be narrower than source."); |
732 static_assert(SrcLimits::is_signed, "Source must be signed."); | 1073 static_assert(SrcLimits::is_signed, "Source must be signed."); |
733 static_assert(!DstLimits::is_signed, "Destination must be unsigned."); | 1074 static_assert(!DstLimits::is_signed, "Destination must be unsigned."); |
734 | 1075 |
735 TestStrictComparison<Dst, Src>(); | 1076 TestStrictComparison<Dst, Src>(); |
736 | 1077 |
737 const CheckedNumeric<Dst> checked_dst; | 1078 const CheckedNumeric<Dst> checked_dst; |
738 TEST_EXPECTED_VALUE(1, checked_dst + static_cast<Src>(1)); | 1079 TEST_EXPECTED_VALUE(1, checked_dst + static_cast<Src>(1)); |
739 TEST_EXPECTED_FAILURE(checked_dst + SrcLimits::max()); | 1080 TEST_EXPECTED_FAILURE(checked_dst + SrcLimits::max()); |
740 TEST_EXPECTED_FAILURE(checked_dst + static_cast<Src>(-1)); | 1081 TEST_EXPECTED_FAILURE(checked_dst + static_cast<Src>(-1)); |
741 TEST_EXPECTED_FAILURE(checked_dst + SrcLimits::lowest()); | 1082 TEST_EXPECTED_FAILURE(checked_dst + SrcLimits::lowest()); |
742 | 1083 |
1084 const ClampedNumeric<Dst> clamped_dst; | |
1085 TEST_EXPECTED_VALUE(1, clamped_dst + static_cast<Src>(1)); | |
1086 TEST_EXPECTED_VALUE(DstLimits::Overflow(), clamped_dst + SrcLimits::max()); | |
1087 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
1088 clamped_dst + static_cast<Src>(-1)); | |
1089 TEST_EXPECTED_VALUE(DstLimits::Underflow(), | |
1090 clamped_dst + SrcLimits::lowest()); | |
1091 | |
743 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::max()); | 1092 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::max()); |
744 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(1)); | 1093 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(1)); |
745 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, static_cast<Src>(-1)); | 1094 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, static_cast<Src>(-1)); |
746 | 1095 |
747 // Additional saturation tests. | 1096 // Additional saturation tests. |
748 EXPECT_EQ(DstLimits::max(), saturated_cast<Dst>(SrcLimits::max())) << src; | 1097 EXPECT_EQ(DstLimits::max(), saturated_cast<Dst>(SrcLimits::max())); |
749 EXPECT_EQ(DstLimits::lowest(), saturated_cast<Dst>(SrcLimits::lowest())); | 1098 EXPECT_EQ(DstLimits::lowest(), saturated_cast<Dst>(SrcLimits::lowest())); |
750 | 1099 |
751 if (SrcLimits::is_iec559) { | 1100 if (SrcLimits::is_iec559) { |
752 EXPECT_EQ(Dst(0), saturated_cast<Dst>(SrcLimits::quiet_NaN())); | 1101 EXPECT_EQ(Dst(0), saturated_cast<Dst>(SrcLimits::quiet_NaN())); |
753 | 1102 |
754 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::max() * -1); | 1103 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::max() * -1); |
755 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::infinity()); | 1104 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::infinity()); |
756 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::infinity() * -1); | 1105 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::infinity() * -1); |
757 TEST_EXPECTED_RANGE(RANGE_INVALID, SrcLimits::quiet_NaN()); | 1106 TEST_EXPECTED_RANGE(RANGE_INVALID, SrcLimits::quiet_NaN()); |
758 if (DstLimits::is_integer) { | 1107 if (DstLimits::is_integer) { |
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769 } | 1118 } |
770 } else { | 1119 } else { |
771 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::lowest()); | 1120 TEST_EXPECTED_RANGE(RANGE_UNDERFLOW, SrcLimits::lowest()); |
772 } | 1121 } |
773 } | 1122 } |
774 }; | 1123 }; |
775 | 1124 |
776 template <typename Dst, typename Src> | 1125 template <typename Dst, typename Src> |
777 struct TestNumericConversion<Dst, Src, UNSIGN_TO_SIGN_NARROW_OR_EQUAL> { | 1126 struct TestNumericConversion<Dst, Src, UNSIGN_TO_SIGN_NARROW_OR_EQUAL> { |
778 static void Test(const char *dst, const char *src, int line) { | 1127 static void Test(const char *dst, const char *src, int line) { |
779 using SrcLimits = numeric_limits<Src>; | 1128 using SrcLimits = SaturationDefaultLimits<Src>; |
780 using DstLimits = numeric_limits<Dst>; | 1129 using DstLimits = SaturationDefaultLimits<Dst>; |
781 static_assert(MaxExponent<Dst>::value <= MaxExponent<Src>::value, | 1130 static_assert(MaxExponent<Dst>::value <= MaxExponent<Src>::value, |
782 "Destination must be narrower or equal to source."); | 1131 "Destination must be narrower or equal to source."); |
783 static_assert(!SrcLimits::is_signed, "Source must be unsigned."); | 1132 static_assert(!SrcLimits::is_signed, "Source must be unsigned."); |
784 static_assert(DstLimits::is_signed, "Destination must be signed."); | 1133 static_assert(DstLimits::is_signed, "Destination must be signed."); |
785 | 1134 |
786 TestStrictComparison<Dst, Src>(); | 1135 TestStrictComparison<Dst, Src>(); |
787 | 1136 |
788 const CheckedNumeric<Dst> checked_dst; | 1137 const CheckedNumeric<Dst> checked_dst; |
789 TEST_EXPECTED_VALUE(1, checked_dst + static_cast<Src>(1)); | 1138 TEST_EXPECTED_VALUE(1, checked_dst + static_cast<Src>(1)); |
790 TEST_EXPECTED_FAILURE(checked_dst + SrcLimits::max()); | 1139 TEST_EXPECTED_FAILURE(checked_dst + SrcLimits::max()); |
791 TEST_EXPECTED_VALUE(SrcLimits::lowest(), checked_dst + SrcLimits::lowest()); | 1140 TEST_EXPECTED_VALUE(SrcLimits::lowest(), checked_dst + SrcLimits::lowest()); |
792 | 1141 |
1142 const ClampedNumeric<Dst> clamped_dst; | |
1143 TEST_EXPECTED_VALUE(1, clamped_dst + static_cast<Src>(1)); | |
1144 TEST_EXPECTED_VALUE(DstLimits::Overflow(), clamped_dst + SrcLimits::max()); | |
1145 TEST_EXPECTED_VALUE(SrcLimits::lowest(), clamped_dst + SrcLimits::lowest()); | |
1146 | |
793 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::lowest()); | 1147 TEST_EXPECTED_RANGE(RANGE_VALID, SrcLimits::lowest()); |
794 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::max()); | 1148 TEST_EXPECTED_RANGE(RANGE_OVERFLOW, SrcLimits::max()); |
795 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(1)); | 1149 TEST_EXPECTED_RANGE(RANGE_VALID, static_cast<Src>(1)); |
796 | 1150 |
797 // Additional saturation tests. | 1151 // Additional saturation tests. |
798 EXPECT_EQ(DstLimits::max(), saturated_cast<Dst>(SrcLimits::max())); | 1152 EXPECT_EQ(DstLimits::max(), saturated_cast<Dst>(SrcLimits::max())); |
799 EXPECT_EQ(Dst(0), saturated_cast<Dst>(SrcLimits::lowest())); | 1153 EXPECT_EQ(Dst(0), saturated_cast<Dst>(SrcLimits::lowest())); |
800 } | 1154 } |
801 }; | 1155 }; |
802 | 1156 |
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1160 EXPECT_TRUE(too_large.IsValid()); | 1514 EXPECT_TRUE(too_large.IsValid()); |
1161 too_large += d; | 1515 too_large += d; |
1162 EXPECT_FALSE(too_large.IsValid()); | 1516 EXPECT_FALSE(too_large.IsValid()); |
1163 too_large -= d; | 1517 too_large -= d; |
1164 EXPECT_FALSE(too_large.IsValid()); | 1518 EXPECT_FALSE(too_large.IsValid()); |
1165 too_large /= d; | 1519 too_large /= d; |
1166 EXPECT_FALSE(too_large.IsValid()); | 1520 EXPECT_FALSE(too_large.IsValid()); |
1167 } | 1521 } |
1168 | 1522 |
1169 TEST(SafeNumerics, VariadicNumericOperations) { | 1523 TEST(SafeNumerics, VariadicNumericOperations) { |
1170 auto a = CheckAdd(1, 2UL, MakeCheckedNum(3LL), 4).ValueOrDie(); | 1524 { // Synthetic scope to avoid variable naming collisions. |
1171 EXPECT_EQ(static_cast<decltype(a)::type>(10), a); | 1525 auto a = CheckAdd(1, 2UL, MakeCheckedNum(3LL), 4).ValueOrDie(); |
1172 auto b = CheckSub(MakeCheckedNum(20.0), 2UL, 4).ValueOrDie(); | 1526 EXPECT_EQ(static_cast<decltype(a)::type>(10), a); |
1173 EXPECT_EQ(static_cast<decltype(b)::type>(14.0), b); | 1527 auto b = CheckSub(MakeCheckedNum(20.0), 2UL, 4).ValueOrDie(); |
1174 auto c = CheckMul(20.0, MakeCheckedNum(1), 5, 3UL).ValueOrDie(); | 1528 EXPECT_EQ(static_cast<decltype(b)::type>(14.0), b); |
1175 EXPECT_EQ(static_cast<decltype(c)::type>(300.0), c); | 1529 auto c = CheckMul(20.0, MakeCheckedNum(1), 5, 3UL).ValueOrDie(); |
1176 auto d = CheckDiv(20.0, 2.0, MakeCheckedNum(5LL), -4).ValueOrDie(); | 1530 EXPECT_EQ(static_cast<decltype(c)::type>(300.0), c); |
1177 EXPECT_EQ(static_cast<decltype(d)::type>(-.5), d); | 1531 auto d = CheckDiv(20.0, 2.0, MakeCheckedNum(5LL), -4).ValueOrDie(); |
1178 auto e = CheckMod(MakeCheckedNum(20), 3).ValueOrDie(); | 1532 EXPECT_EQ(static_cast<decltype(d)::type>(-.5), d); |
1179 EXPECT_EQ(static_cast<decltype(e)::type>(2), e); | 1533 auto e = CheckMod(MakeCheckedNum(20), 3).ValueOrDie(); |
1180 auto f = CheckLsh(1, MakeCheckedNum(2)).ValueOrDie(); | 1534 EXPECT_EQ(static_cast<decltype(e)::type>(2), e); |
1181 EXPECT_EQ(static_cast<decltype(f)::type>(4), f); | 1535 auto f = CheckLsh(1, MakeCheckedNum(2)).ValueOrDie(); |
1182 auto g = CheckRsh(4, MakeCheckedNum(2)).ValueOrDie(); | 1536 EXPECT_EQ(static_cast<decltype(f)::type>(4), f); |
1183 EXPECT_EQ(static_cast<decltype(g)::type>(1), g); | 1537 auto g = CheckRsh(4, MakeCheckedNum(2)).ValueOrDie(); |
1184 auto h = CheckRsh(CheckAdd(1, 1, 1, 1), CheckSub(4, 2)).ValueOrDie(); | 1538 EXPECT_EQ(static_cast<decltype(g)::type>(1), g); |
1185 EXPECT_EQ(static_cast<decltype(h)::type>(1), h); | 1539 auto h = CheckRsh(CheckAdd(1, 1, 1, 1), CheckSub(4, 2)).ValueOrDie(); |
1540 EXPECT_EQ(static_cast<decltype(h)::type>(1), h); | |
1541 } | |
1542 | |
1543 { | |
1544 auto a = ClampAdd(1, 2UL, MakeClampedNum(3LL), 4); | |
1545 EXPECT_EQ(static_cast<decltype(a)::type>(10), a); | |
1546 auto b = ClampSub(MakeClampedNum(20.0), 2UL, 4); | |
1547 EXPECT_EQ(static_cast<decltype(b)::type>(14.0), b); | |
1548 auto c = ClampMul(20.0, MakeClampedNum(1), 5, 3UL); | |
1549 EXPECT_EQ(static_cast<decltype(c)::type>(300.0), c); | |
1550 auto d = ClampDiv(20.0, 2.0, MakeClampedNum(5LL), -4); | |
1551 EXPECT_EQ(static_cast<decltype(d)::type>(-.5), d); | |
1552 auto e = ClampMod(MakeClampedNum(20), 3); | |
1553 EXPECT_EQ(static_cast<decltype(e)::type>(2), e); | |
1554 auto f = ClampLsh(1, MakeClampedNum(2U)); | |
1555 EXPECT_EQ(static_cast<decltype(f)::type>(4), f); | |
1556 auto g = ClampRsh(4, MakeClampedNum(2U)); | |
1557 EXPECT_EQ(static_cast<decltype(g)::type>(1), g); | |
1558 auto h = ClampRsh(ClampAdd(1, 1, 1, 1), ClampSub(4U, 2)); | |
1559 EXPECT_EQ(static_cast<decltype(h)::type>(1), h); | |
1560 } | |
1186 } | 1561 } |
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