85 lines · cpp
1//===-- Unittests for exp2m1f16 -------------------------------------------===//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-exception6//7//===----------------------------------------------------------------------===//8 9#include "hdr/errno_macros.h"10#include "hdr/fenv_macros.h"11#include "src/__support/FPUtil/cast.h"12#include "src/math/exp2m1f16.h"13#include "test/UnitTest/FPMatcher.h"14#include "test/UnitTest/Test.h"15 16using LlvmLibcExp2m1f16Test = LIBC_NAMESPACE::testing::FPTest<float16>;17 18TEST_F(LlvmLibcExp2m1f16Test, SpecialNumbers) {19 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::exp2m1f16(aNaN));20 EXPECT_MATH_ERRNO(0);21 22 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::exp2m1f16(sNaN),23 FE_INVALID);24 EXPECT_MATH_ERRNO(0);25 26 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::exp2m1f16(inf));27 EXPECT_MATH_ERRNO(0);28 29 EXPECT_FP_EQ_ALL_ROUNDING(-1.0, LIBC_NAMESPACE::exp2m1f16(neg_inf));30 EXPECT_MATH_ERRNO(0);31 32 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::exp2m1f16(zero));33 EXPECT_MATH_ERRNO(0);34 35 EXPECT_FP_EQ_ALL_ROUNDING(neg_zero, LIBC_NAMESPACE::exp2m1f16(neg_zero));36 EXPECT_MATH_ERRNO(0);37}38 39TEST_F(LlvmLibcExp2m1f16Test, Overflow) {40 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2m1f16(max_normal),41 FE_OVERFLOW | FE_INEXACT);42 EXPECT_MATH_ERRNO(ERANGE);43 44 float16 x = LIBC_NAMESPACE::fputil::cast<float16>(16.0);45 46 EXPECT_FP_EQ_WITH_EXCEPTION_ROUNDING_NEAREST(47 inf, LIBC_NAMESPACE::exp2m1f16(x), FE_OVERFLOW | FE_INEXACT);48 EXPECT_MATH_ERRNO(ERANGE);49 50 EXPECT_FP_EQ_WITH_EXCEPTION_ROUNDING_UPWARD(inf, LIBC_NAMESPACE::exp2m1f16(x),51 FE_OVERFLOW | FE_INEXACT);52 EXPECT_MATH_ERRNO(ERANGE);53 54 EXPECT_FP_EQ_WITH_EXCEPTION_ROUNDING_DOWNWARD(55 max_normal, LIBC_NAMESPACE::exp2m1f16(x), FE_INEXACT);56 EXPECT_MATH_ERRNO(0);57 58 EXPECT_FP_EQ_WITH_EXCEPTION_ROUNDING_TOWARD_ZERO(59 max_normal, LIBC_NAMESPACE::exp2m1f16(x), FE_INEXACT);60 EXPECT_MATH_ERRNO(0);61}62 63TEST_F(LlvmLibcExp2m1f16Test, ResultNearNegOne) {64 EXPECT_FP_EQ_WITH_EXCEPTION(-1.0, LIBC_NAMESPACE::exp2m1f16(neg_max_normal),65 FE_INEXACT);66 67 EXPECT_FP_EQ_ALL_ROUNDING(68 -0x1.ffcp-1,69 LIBC_NAMESPACE::exp2m1f16(LIBC_NAMESPACE::fputil::cast<float16>(-11.0)));70 71 float16 x = LIBC_NAMESPACE::fputil::cast<float16>(-12.0);72 73 EXPECT_FP_EQ_WITH_EXCEPTION_ROUNDING_NEAREST(74 -1.0, LIBC_NAMESPACE::exp2m1f16(x), FE_INEXACT);75 76 EXPECT_FP_EQ_WITH_EXCEPTION_ROUNDING_UPWARD(77 -0x1.ffcp-1, LIBC_NAMESPACE::exp2m1f16(x), FE_INEXACT);78 79 EXPECT_FP_EQ_WITH_EXCEPTION_ROUNDING_DOWNWARD(80 -1.0, LIBC_NAMESPACE::exp2m1f16(x), FE_INEXACT);81 82 EXPECT_FP_EQ_WITH_EXCEPTION_ROUNDING_TOWARD_ZERO(83 -0x1.ffcp-1, LIBC_NAMESPACE::exp2m1f16(x), FE_INEXACT);84}85