1//===-- Unittests for fegetround and fesetround ---------------------------===//
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/fenv/fegetround.h"
10#include "src/fenv/fesetround.h"
11
12#include "test/UnitTest/FEnvSafeTest.h"
13#include "test/UnitTest/Test.h"
14
15#include "hdr/fenv_macros.h"
16
17using LlvmLibcRoundingModeTest = LIBC_NAMESPACE::testing::FEnvSafeTest;
18
19TEST_F(LlvmLibcRoundingModeTest, SetAndGet) {
20 struct ResetDefaultRoundingMode {
21 int original = LIBC_NAMESPACE::fegetround();
22 ~ResetDefaultRoundingMode() { LIBC_NAMESPACE::fesetround(original); }
23 } reset;
24
25 int s = LIBC_NAMESPACE::fesetround(FE_TONEAREST);
26 EXPECT_EQ(s, 0);
27 int rm = LIBC_NAMESPACE::fegetround();
28 EXPECT_EQ(rm, FE_TONEAREST);
29
30 s = LIBC_NAMESPACE::fesetround(FE_UPWARD);
31 EXPECT_EQ(s, 0);
32 rm = LIBC_NAMESPACE::fegetround();
33 EXPECT_EQ(rm, FE_UPWARD);
34
35 s = LIBC_NAMESPACE::fesetround(FE_DOWNWARD);
36 EXPECT_EQ(s, 0);
37 rm = LIBC_NAMESPACE::fegetround();
38 EXPECT_EQ(rm, FE_DOWNWARD);
39
40 s = LIBC_NAMESPACE::fesetround(FE_TOWARDZERO);
41 EXPECT_EQ(s, 0);
42 rm = LIBC_NAMESPACE::fegetround();
43 EXPECT_EQ(rm, FE_TOWARDZERO);
44}
45

source code of libc/test/src/fenv/rounding_mode_test.cpp