1 //===-- Unittests for exp2f16 ---------------------------------------------===//
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/exp2f16.h"
13 #include "test/UnitTest/FPMatcher.h"
14 #include "test/UnitTest/Test.h"
15
16 using LlvmLibcExp2f16Test = LIBC_NAMESPACE::testing::FPTest<float16>;
17
TEST_F(LlvmLibcExp2f16Test,SpecialNumbers)18 TEST_F(LlvmLibcExp2f16Test, SpecialNumbers) {
19 LIBC_NAMESPACE::libc_errno = 0;
20
21 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::exp2f16(aNaN));
22 EXPECT_MATH_ERRNO(0);
23
24 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::exp2f16(sNaN), FE_INVALID);
25 EXPECT_MATH_ERRNO(0);
26
27 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::exp2f16(inf));
28 EXPECT_MATH_ERRNO(0);
29
30 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::exp2f16(neg_inf));
31 EXPECT_MATH_ERRNO(0);
32
33 EXPECT_FP_EQ_ALL_ROUNDING(LIBC_NAMESPACE::fputil::cast<float16>(1.0f),
34 LIBC_NAMESPACE::exp2f16(zero));
35 EXPECT_MATH_ERRNO(0);
36
37 EXPECT_FP_EQ_ALL_ROUNDING(LIBC_NAMESPACE::fputil::cast<float16>(1.0f),
38 LIBC_NAMESPACE::exp2f16(neg_zero));
39 EXPECT_MATH_ERRNO(0);
40 }
41
TEST_F(LlvmLibcExp2f16Test,Overflow)42 TEST_F(LlvmLibcExp2f16Test, Overflow) {
43 LIBC_NAMESPACE::libc_errno = 0;
44
45 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::exp2f16(max_normal),
46 FE_OVERFLOW);
47 EXPECT_MATH_ERRNO(ERANGE);
48
49 EXPECT_FP_EQ_WITH_EXCEPTION(
50 inf, LIBC_NAMESPACE::exp2f16(LIBC_NAMESPACE::fputil::cast<float16>(16.0)),
51 FE_OVERFLOW);
52 EXPECT_MATH_ERRNO(ERANGE);
53 }
54
TEST_F(LlvmLibcExp2f16Test,Underflow)55 TEST_F(LlvmLibcExp2f16Test, Underflow) {
56 LIBC_NAMESPACE::libc_errno = 0;
57
58 EXPECT_FP_EQ_WITH_EXCEPTION(zero, LIBC_NAMESPACE::exp2f16(neg_max_normal),
59 FE_UNDERFLOW | FE_INEXACT);
60 EXPECT_MATH_ERRNO(ERANGE);
61
62 EXPECT_FP_EQ_WITH_EXCEPTION(
63 zero,
64 LIBC_NAMESPACE::exp2f16(LIBC_NAMESPACE::fputil::cast<float16>(-25.0)),
65 FE_UNDERFLOW | FE_INEXACT);
66 EXPECT_MATH_ERRNO(ERANGE);
67 }
68