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