| 1 | //===-- Unittests for asin ------------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "hdr/fenv_macros.h" |
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| 10 | #include "src/math/asin.h" |
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| 11 | #include "test/UnitTest/FPMatcher.h" |
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| 12 | #include "test/UnitTest/Test.h" |
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| 13 | |
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| 14 | using LlvmLibcAsinTest = LIBC_NAMESPACE::testing::FPTest<double>; |
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| 15 | |
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| 16 | TEST_F(LlvmLibcAsinTest, SpecialNumbers) { |
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| 17 | EXPECT_FP_EQ_WITH_EXCEPTION_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asin(sNaN), |
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| 18 | FE_INVALID); |
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| 19 | EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asin(aNaN)); |
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| 20 | EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::asin(zero)); |
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| 21 | EXPECT_FP_EQ_ALL_ROUNDING(neg_zero, LIBC_NAMESPACE::asin(neg_zero)); |
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| 22 | EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asin(inf)); |
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| 23 | EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asin(neg_inf)); |
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| 24 | EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asin(2.0)); |
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| 25 | EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::asin(-2.0)); |
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| 26 | EXPECT_FP_EQ(0x1.921fb54442d18p0, LIBC_NAMESPACE::asin(1.0)); |
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| 27 | EXPECT_FP_EQ(-0x1.921fb54442d18p0, LIBC_NAMESPACE::asin(-1.0)); |
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| 28 | } |
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| 29 | |
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| 30 | #ifdef LIBC_TEST_FTZ_DAZ |
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| 31 | |
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| 32 | using namespace LIBC_NAMESPACE::testing; |
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| 33 | |
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| 34 | // With FTZ/DAZ flags are set, when the inputs are denormal, the output bit |
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| 35 | // pattern might not be exactly 0, but they should all be equal to 0 as floating |
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| 36 | // points. |
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| 37 | |
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| 38 | TEST_F(LlvmLibcAsinTest, FTZMode) { |
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| 39 | ModifyMXCSR mxcsr(FTZ); |
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| 40 | |
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| 41 | EXPECT_TRUE(zero == LIBC_NAMESPACE::asin(min_denormal)); |
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| 42 | } |
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| 43 | |
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| 44 | TEST_F(LlvmLibcAsinTest, DAZMode) { |
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| 45 | ModifyMXCSR mxcsr(DAZ); |
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| 46 | |
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| 47 | EXPECT_TRUE(zero == LIBC_NAMESPACE::asin(min_denormal)); |
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| 48 | } |
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| 49 | |
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| 50 | TEST_F(LlvmLibcAsinTest, FTZDAZMode) { |
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| 51 | ModifyMXCSR mxcsr(FTZ | DAZ); |
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| 52 | |
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| 53 | EXPECT_TRUE(zero == LIBC_NAMESPACE::asin(min_denormal)); |
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| 54 | } |
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| 55 | |
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| 56 | #endif |
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| 57 | |
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