1 //===-- Unittests for exp2f -----------------------------------------------===// 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 "src/__support/FPUtil/FPBits.h" 10 #include "src/__support/macros/properties/cpu_features.h" // LIBC_TARGET_CPU_HAS_FMA 11 #include "src/errno/libc_errno.h" 12 #include "src/math/exp2f.h" 13 #include "test/UnitTest/FPMatcher.h" 14 #include "test/UnitTest/Test.h" 15 #include <math.h> 16 17 #include <stdint.h> 18 19 using LlvmLibcExp2fTest = LIBC_NAMESPACE::testing::FPTest<float>; 20 21 TEST_F(LlvmLibcExp2fTest, SpecialNumbers) { 22 LIBC_NAMESPACE::libc_errno = 0; 23 24 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::exp2f(aNaN)); 25 EXPECT_MATH_ERRNO(0); 26 27 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::exp2f(inf)); 28 EXPECT_MATH_ERRNO(0); 29 30 EXPECT_FP_EQ_ALL_ROUNDING(0.0f, LIBC_NAMESPACE::exp2f(neg_inf)); 31 EXPECT_MATH_ERRNO(0); 32 33 EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::exp2f(0.0f)); 34 EXPECT_MATH_ERRNO(0); 35 36 EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::exp2f(-0.0f)); 37 EXPECT_MATH_ERRNO(0); 38 39 EXPECT_FP_EQ_ALL_ROUNDING(2.0f, LIBC_NAMESPACE::exp2f(1.0f)); 40 EXPECT_FP_EQ_ALL_ROUNDING(0.5f, LIBC_NAMESPACE::exp2f(-1.0f)); 41 EXPECT_FP_EQ_ALL_ROUNDING(4.0f, LIBC_NAMESPACE::exp2f(2.0f)); 42 EXPECT_FP_EQ_ALL_ROUNDING(0.25f, LIBC_NAMESPACE::exp2f(-2.0f)); 43 } 44 45 TEST_F(LlvmLibcExp2fTest, Overflow) { 46 LIBC_NAMESPACE::libc_errno = 0; 47 EXPECT_FP_EQ_WITH_EXCEPTION( 48 inf, LIBC_NAMESPACE::exp2f(FPBits(0x7f7fffffU).get_val()), FE_OVERFLOW); 49 EXPECT_MATH_ERRNO(ERANGE); 50 51 EXPECT_FP_EQ_WITH_EXCEPTION( 52 inf, LIBC_NAMESPACE::exp2f(FPBits(0x43000000U).get_val()), FE_OVERFLOW); 53 EXPECT_MATH_ERRNO(ERANGE); 54 55 EXPECT_FP_EQ_WITH_EXCEPTION( 56 inf, LIBC_NAMESPACE::exp2f(FPBits(0x43000001U).get_val()), FE_OVERFLOW); 57 EXPECT_MATH_ERRNO(ERANGE); 58 } 59