1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
//===-- RoundingModeUtils.cpp ---------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "RoundingModeUtils.h"
#include <fenv.h>
namespace __llvm_libc {
namespace testutils {
int get_fe_rounding(RoundingMode mode) {
switch (mode) {
case RoundingMode::Upward:
return FE_UPWARD;
break;
case RoundingMode::Downward:
return FE_DOWNWARD;
break;
case RoundingMode::TowardZero:
return FE_TOWARDZERO;
break;
case RoundingMode::Nearest:
return FE_TONEAREST;
break;
}
}
ForceRoundingMode::ForceRoundingMode(RoundingMode mode) {
old_rounding_mode = fegetround();
rounding_mode = get_fe_rounding(mode);
if (old_rounding_mode != rounding_mode)
fesetround(rounding_mode);
}
ForceRoundingMode::~ForceRoundingMode() {
if (old_rounding_mode != rounding_mode)
fesetround(old_rounding_mode);
}
} // namespace testutils
} // namespace __llvm_libc
|
