1//===-- Unittests for cbrt ------------------------------------------------===//
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/math/cbrt.h"
10#include "test/UnitTest/FPMatcher.h"
11#include "test/UnitTest/Test.h"
12
13using LlvmLibcCbrtTest = LIBC_NAMESPACE::testing::FPTest<double>;
14
15using LIBC_NAMESPACE::testing::tlog;
16
17TEST_F(LlvmLibcCbrtTest, SpecialNumbers) {
18 EXPECT_FP_EQ_WITH_EXCEPTION(aNaN, LIBC_NAMESPACE::cbrt(sNaN), FE_INVALID);
19 EXPECT_MATH_ERRNO(0);
20
21 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::cbrt(aNaN));
22 EXPECT_FP_EQ_ALL_ROUNDING(inf, LIBC_NAMESPACE::cbrt(inf));
23 EXPECT_FP_EQ_ALL_ROUNDING(neg_inf, LIBC_NAMESPACE::cbrt(neg_inf));
24 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::cbrt(zero));
25 EXPECT_FP_EQ_ALL_ROUNDING(neg_zero, LIBC_NAMESPACE::cbrt(neg_zero));
26 EXPECT_FP_EQ_ALL_ROUNDING(1.0, LIBC_NAMESPACE::cbrt(1.0));
27 EXPECT_FP_EQ_ALL_ROUNDING(-1.0, LIBC_NAMESPACE::cbrt(-1.0));
28 EXPECT_FP_EQ_ALL_ROUNDING(2.0, LIBC_NAMESPACE::cbrt(8.0));
29 EXPECT_FP_EQ_ALL_ROUNDING(-2.0, LIBC_NAMESPACE::cbrt(-8.0));
30 EXPECT_FP_EQ_ALL_ROUNDING(3.0, LIBC_NAMESPACE::cbrt(27.0));
31 EXPECT_FP_EQ_ALL_ROUNDING(-3.0, LIBC_NAMESPACE::cbrt(-27.0));
32 EXPECT_FP_EQ_ALL_ROUNDING(5.0, LIBC_NAMESPACE::cbrt(125.0));
33 EXPECT_FP_EQ_ALL_ROUNDING(-5.0, LIBC_NAMESPACE::cbrt(-125.0));
34 EXPECT_FP_EQ_ALL_ROUNDING(0x1.0p42, LIBC_NAMESPACE::cbrt(0x1.0p126));
35 EXPECT_FP_EQ_ALL_ROUNDING(-0x1.0p42, LIBC_NAMESPACE::cbrt(-0x1.0p126));
36 EXPECT_FP_EQ_ALL_ROUNDING(0x1.0p341, LIBC_NAMESPACE::cbrt(0x1.0p1023));
37 EXPECT_FP_EQ_ALL_ROUNDING(-0x1.0p341, LIBC_NAMESPACE::cbrt(-0x1.0p1023));
38 EXPECT_FP_EQ(-0x1.0p-340, LIBC_NAMESPACE::cbrt(-0x1.fffffffffffffp-1021));
39 EXPECT_FP_EQ(2.0, LIBC_NAMESPACE::cbrt(0x1.fffffffffffffp2));
40}
41
42#ifdef LIBC_TEST_FTZ_DAZ
43
44using namespace LIBC_NAMESPACE::testing;
45
46TEST_F(LlvmLibcCbrtTest, FTZMode) {
47 ModifyMXCSR mxcsr(FTZ);
48
49 EXPECT_FP_EQ(0x1.0p-358, LIBC_NAMESPACE::cbrt(min_denormal));
50 EXPECT_FP_EQ(0x1.428a2f98d728ap-341, LIBC_NAMESPACE::cbrt(max_denormal));
51}
52
53TEST_F(LlvmLibcCbrtTest, DAZMode) {
54 ModifyMXCSR mxcsr(DAZ);
55
56 EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::cbrt(min_denormal));
57 EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::cbrt(max_denormal));
58}
59
60TEST_F(LlvmLibcCbrtTest, FTZDAZMode) {
61 ModifyMXCSR mxcsr(FTZ | DAZ);
62
63 EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::cbrt(min_denormal));
64 EXPECT_FP_EQ(0.0, LIBC_NAMESPACE::cbrt(max_denormal));
65}
66
67#endif
68

source code of libc/test/src/math/smoke/cbrt_test.cpp