| 1 | // Copyright 2013 The Flutter Authors. All rights reserved. |
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| 2 | // Use of this source code is governed by a BSD-style license that can be |
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| 3 | // found in the LICENSE file. |
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| 4 | |
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| 5 | #include <cmath> |
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| 6 | |
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| 7 | #include "flutter/fml/math.h" |
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| 8 | #include "gtest/gtest.h" |
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| 9 | |
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| 10 | namespace flutter { |
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| 11 | namespace testing { |
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| 12 | |
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| 13 | TEST(MathTest, Constants) { |
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| 14 | // Don't use the constants in cmath as those aren't portable. |
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| 15 | EXPECT_FLOAT_EQ(std::log2(math::kE), math::kLog2_E); |
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| 16 | EXPECT_FLOAT_EQ(std::log10(math::kE), math::kLog10_E); |
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| 17 | EXPECT_FLOAT_EQ(std::log(2.0f), math::klogE_2); |
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| 18 | EXPECT_FLOAT_EQ(math::kPi / 2.0f, math::kPiOver2); |
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| 19 | EXPECT_FLOAT_EQ(math::kPi / 4.0f, math::kPiOver4); |
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| 20 | EXPECT_FLOAT_EQ(1.0f / math::kPi, math::k1OverPi); |
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| 21 | EXPECT_FLOAT_EQ(2.0f / math::kPi, math::k2OverPi); |
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| 22 | EXPECT_FLOAT_EQ(std::sqrt(2.0f), math::kSqrt2); |
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| 23 | EXPECT_FLOAT_EQ(1.0f / std::sqrt(2.0f), math::k1OverSqrt2); |
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| 24 | } |
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| 25 | |
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| 26 | } // namespace testing |
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| 27 | } // namespace flutter |
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| 28 | |
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