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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 #ifndef BASE_NUMERICS_SAFE_CONVERSIONS_IMPL_H_ | 5 #ifndef BASE_NUMERICS_SAFE_CONVERSIONS_IMPL_H_ |
6 #define BASE_NUMERICS_SAFE_CONVERSIONS_IMPL_H_ | 6 #define BASE_NUMERICS_SAFE_CONVERSIONS_IMPL_H_ |
7 | 7 |
| 8 #include <limits.h> |
| 9 #include <stdint.h> |
| 10 |
8 #include <limits> | 11 #include <limits> |
9 | 12 |
10 #include "base/template_util.h" | 13 #include "base/template_util.h" |
11 | 14 |
12 namespace base { | 15 namespace base { |
13 namespace internal { | 16 namespace internal { |
14 | 17 |
15 // The std library doesn't provide a binary max_exponent for integers, however | 18 // The std library doesn't provide a binary max_exponent for integers, however |
16 // we can compute one by adding one to the number of non-sign bits. This allows | 19 // we can compute one by adding one to the number of non-sign bits. This allows |
17 // for accurate range comparisons between floating point and integer types. | 20 // for accurate range comparisons between floating point and integer types. |
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252 "Argument must be numeric."); | 255 "Argument must be numeric."); |
253 static_assert(std::numeric_limits<Dst>::is_specialized, | 256 static_assert(std::numeric_limits<Dst>::is_specialized, |
254 "Result must be numeric."); | 257 "Result must be numeric."); |
255 return DstRangeRelationToSrcRangeImpl<Dst, Src>::Check(value); | 258 return DstRangeRelationToSrcRangeImpl<Dst, Src>::Check(value); |
256 } | 259 } |
257 | 260 |
258 } // namespace internal | 261 } // namespace internal |
259 } // namespace base | 262 } // namespace base |
260 | 263 |
261 #endif // BASE_NUMERICS_SAFE_CONVERSIONS_IMPL_H_ | 264 #endif // BASE_NUMERICS_SAFE_CONVERSIONS_IMPL_H_ |
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