1 //===-- Unittests for erff ------------------------------------------------===//
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/math_macros.h"
10 #include "src/__support/FPUtil/FPBits.h"
11 #include "src/math/erff.h"
12 #include "test/UnitTest/FPMatcher.h"
13 #include "test/UnitTest/Test.h"
14
15 #include <stdint.h>
16
17 using LlvmLibcErffTest = LIBC_NAMESPACE::testing::FPTest<float>;
18
TEST_F(LlvmLibcErffTest,SpecialNumbers)19 TEST_F(LlvmLibcErffTest, SpecialNumbers) {
20 EXPECT_FP_EQ_ALL_ROUNDING(aNaN, LIBC_NAMESPACE::erff(aNaN));
21 EXPECT_FP_EQ_ALL_ROUNDING(1.0f, LIBC_NAMESPACE::erff(inf));
22 EXPECT_FP_EQ_ALL_ROUNDING(-1.0f, LIBC_NAMESPACE::erff(neg_inf));
23 EXPECT_FP_EQ_ALL_ROUNDING(zero, LIBC_NAMESPACE::erff(zero));
24 EXPECT_FP_EQ_ALL_ROUNDING(neg_zero, LIBC_NAMESPACE::erff(neg_zero));
25 }
26
27 #ifdef LIBC_TEST_FTZ_DAZ
28
29 using namespace LIBC_NAMESPACE::testing;
30
TEST_F(LlvmLibcErffTest,FTZMode)31 TEST_F(LlvmLibcErffTest, FTZMode) {
32 ModifyMXCSR mxcsr(FTZ);
33
34 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(min_denormal));
35 EXPECT_FP_EQ(0x1.20dd72p-126f, LIBC_NAMESPACE::erff(max_denormal));
36 }
37
TEST_F(LlvmLibcErffTest,DAZMode)38 TEST_F(LlvmLibcErffTest, DAZMode) {
39 ModifyMXCSR mxcsr(DAZ);
40
41 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(min_denormal));
42 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(max_denormal));
43 }
44
TEST_F(LlvmLibcErffTest,FTZDAZMode)45 TEST_F(LlvmLibcErffTest, FTZDAZMode) {
46 ModifyMXCSR mxcsr(FTZ | DAZ);
47
48 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(min_denormal));
49 EXPECT_FP_EQ(0.0f, LIBC_NAMESPACE::erff(max_denormal));
50 }
51
52 #endif
53