1 //===-- Unittests for expf16 ----------------------------------------------===//
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/errno_macros.h"
10 #include "hdr/fenv_macros.h"
11 #include "src/__support/FPUtil/cast.h"
12 #include "src/errno/libc_errno.h"
13 #include "src/math/expf16.h"
14 #include "test/UnitTest/FPMatcher.h"
15 #include "test/UnitTest/Test.h"
16
17 using LlvmLibcExpf16Test = LIBC_NAMESPACE::testing::FPTest<float16>;
18
TEST_F(LlvmLibcExpf16Test,SpecialNumbers)19 TEST_F(LlvmLibcExpf16Test, SpecialNumbers) {
20 LIBC_NAMESPACE::libc_errno = 0;
21
22 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::expf16(aNaN));
23 EXPECT_MATH_ERRNO(0);
24
25 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::expf16(sNaN), FE_INVALID);
26 EXPECT_MATH_ERRNO(0);
27
28 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::expf16(inf));
29 EXPECT_MATH_ERRNO(0);
30
31 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::expf16(neg_inf));
32 EXPECT_MATH_ERRNO(0);
33
34 EXPECT_FP_EQ_ALL_ROUNDING(LIBC_NAMESPACE::fputil::cast<float16>(1.0f),
35 LIBC_NAMESPACE::expf16(zero));
36 EXPECT_MATH_ERRNO(0);
37
38 EXPECT_FP_EQ_ALL_ROUNDING(LIBC_NAMESPACE::fputil::cast<float16>(1.0f),
39 LIBC_NAMESPACE::expf16(neg_zero));
40 EXPECT_MATH_ERRNO(0);
41 }
42
TEST_F(LlvmLibcExpf16Test,Overflow)43 TEST_F(LlvmLibcExpf16Test, Overflow) {
44 LIBC_NAMESPACE::libc_errno = 0;
45
46 EXPECT_FP_EQ_WITH_EXCEPTION(inf, LIBC_NAMESPACE::expf16(max_normal),
47 FE_OVERFLOW);
48 EXPECT_MATH_ERRNO(ERANGE);
49
50 EXPECT_FP_EQ_WITH_EXCEPTION(
51 inf, LIBC_NAMESPACE::expf16(LIBC_NAMESPACE::fputil::cast<float16>(12.0)),
52 FE_OVERFLOW);
53 EXPECT_MATH_ERRNO(ERANGE);
54 }
55
TEST_F(LlvmLibcExpf16Test,Underflow)56 TEST_F(LlvmLibcExpf16Test, Underflow) {
57 LIBC_NAMESPACE::libc_errno = 0;
58
59 EXPECT_FP_EQ_WITH_EXCEPTION(zero, LIBC_NAMESPACE::expf16(neg_max_normal),
60 FE_UNDERFLOW | FE_INEXACT);
61 EXPECT_MATH_ERRNO(ERANGE);
62
63 EXPECT_FP_EQ_WITH_EXCEPTION(
64 zero,
65 LIBC_NAMESPACE::expf16(LIBC_NAMESPACE::fputil::cast<float16>(-18.0)),
66 FE_UNDERFLOW | FE_INEXACT);
67 EXPECT_MATH_ERRNO(ERANGE);
68 }
69