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| 1 // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include <limits> |
| 6 |
| 7 #include "src/base/ieee754.h" |
| 8 #include "src/base/macros.h" |
| 9 #include "testing/gmock-support.h" |
| 10 #include "testing/gtest-support.h" |
| 11 |
| 12 using testing::IsNaN; |
| 13 |
| 14 namespace v8 { |
| 15 namespace base { |
| 16 namespace ieee754 { |
| 17 |
| 18 TEST(Ieee754, Log) { |
| 19 EXPECT_THAT(log(std::numeric_limits<double>::quiet_NaN()), IsNaN()); |
| 20 EXPECT_THAT(log(std::numeric_limits<double>::signaling_NaN()), IsNaN()); |
| 21 EXPECT_THAT(log(-std::numeric_limits<double>::infinity()), IsNaN()); |
| 22 EXPECT_THAT(log(-1.0), IsNaN()); |
| 23 EXPECT_EQ(-std::numeric_limits<double>::infinity(), log(-0.0)); |
| 24 EXPECT_EQ(-std::numeric_limits<double>::infinity(), log(0.0)); |
| 25 EXPECT_EQ(0.0, log(1.0)); |
| 26 EXPECT_EQ(std::numeric_limits<double>::infinity(), |
| 27 log(std::numeric_limits<double>::infinity())); |
| 28 } |
| 29 |
| 30 TEST(Ieee754, Log1p) { |
| 31 EXPECT_THAT(log1p(std::numeric_limits<double>::quiet_NaN()), IsNaN()); |
| 32 EXPECT_THAT(log1p(std::numeric_limits<double>::signaling_NaN()), IsNaN()); |
| 33 EXPECT_THAT(log1p(-std::numeric_limits<double>::infinity()), IsNaN()); |
| 34 EXPECT_EQ(-std::numeric_limits<double>::infinity(), log1p(-1.0)); |
| 35 EXPECT_EQ(0.0, log1p(0.0)); |
| 36 EXPECT_EQ(-0.0, log1p(-0.0)); |
| 37 EXPECT_EQ(std::numeric_limits<double>::infinity(), |
| 38 log1p(std::numeric_limits<double>::infinity())); |
| 39 EXPECT_EQ(6.9756137364252422e-03, log1p(0.007)); |
| 40 EXPECT_EQ(709.782712893384, log1p(1.7976931348623157e308)); |
| 41 EXPECT_EQ(2.7755575615628914e-17, log1p(2.7755575615628914e-17)); |
| 42 EXPECT_EQ(9.313225741817976e-10, log1p(9.313225746154785e-10)); |
| 43 EXPECT_EQ(-0.2876820724517809, log1p(-0.25)); |
| 44 EXPECT_EQ(0.22314355131420976, log1p(0.25)); |
| 45 EXPECT_EQ(2.3978952727983707, log1p(10)); |
| 46 EXPECT_EQ(36.841361487904734, log1p(10e15)); |
| 47 EXPECT_EQ(37.08337388996168, log1p(12738099905822720)); |
| 48 EXPECT_EQ(37.08336444902049, log1p(12737979646738432)); |
| 49 EXPECT_EQ(1.3862943611198906, log1p(3)); |
| 50 EXPECT_EQ(1.3862945995384413, log1p(3 + 9.5367431640625e-7)); |
| 51 EXPECT_EQ(0.5596157879354227, log1p(0.75)); |
| 52 EXPECT_EQ(0.8109302162163288, log1p(1.25)); |
| 53 } |
| 54 |
| 55 } // namespace ieee754 |
| 56 } // namespace base |
| 57 } // namespace v8 |
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