1 //===-- Unittests for log2f16 ---------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "hdr/fenv_macros.h" 10 #include "src/__support/FPUtil/cast.h" 11 #include "src/errno/libc_errno.h" 12 #include "src/math/log2f16.h" 13 #include "test/UnitTest/FPMatcher.h" 14 #include "test/UnitTest/Test.h" 15 16 using LlvmLibcLog2f16Test = LIBC_NAMESPACE::testing::FPTest<float16>; 17 18 TEST_F(LlvmLibcLog2f16Test, SpecialNumbers) { 19 LIBC_NAMESPACE::libc_errno = 0; 20 21 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::log2f16(aNaN)); 22 EXPECT_MATH_ERRNO(0); 23 24 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::log2f16(sNaN), FE_INVALID); 25 EXPECT_MATH_ERRNO(0); 26 27 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::log2f16(inf)); 28 EXPECT_MATH_ERRNO(0); 29 30 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::log2f16(neg_inf)); 31 EXPECT_MATH_ERRNO(EDOM); 32 33 EXPECT_FP_EQ_WITH_EXCEPTION_ALL_ROUNDING( 34 neg_inf, LIBC_NAMESPACE::log2f16(zero), FE_DIVBYZERO); 35 EXPECT_MATH_ERRNO(0); 36 37 EXPECT_FP_EQ_WITH_EXCEPTION_ALL_ROUNDING( 38 neg_inf, LIBC_NAMESPACE::log2f16(neg_zero), FE_DIVBYZERO); 39 EXPECT_MATH_ERRNO(0); 40 41 EXPECT_FP_EQ_ALL_ROUNDING( 42 zero, 43 LIBC_NAMESPACE::log2f16(LIBC_NAMESPACE::fputil::cast<float16>(1.0))); 44 EXPECT_MATH_ERRNO(0); 45 46 EXPECT_FP_EQ_ALL_ROUNDING( 47 aNaN, 48 LIBC_NAMESPACE::log2f16(LIBC_NAMESPACE::fputil::cast<float16>(-1.0))); 49 EXPECT_MATH_ERRNO(EDOM); 50 } 51