shylie/llvm-project
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[libc][math] Skip setting errno and floating point exception for math functions when LIBC_MATH flag has LIBC_MATH_NO_ERRNO and LIBC_MATH_NO_EXCEPT. (#144920)

Browse Source
This commit is contained in:
lntue 2025-06-19 12:18:39 -04:00 committed by GitHub
parent c1ac87b327
commit b8337349d9
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
2 changed files with 21 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
libc/src/__support/FPUtil/FEnvImpl.h
View File

@ -15,6 +15,7 @@
#include "src/__support/libc_errno.h"
#include "src/__support/macros/attributes.h" // LIBC_INLINE
#include "src/__support/macros/config.h"
#include "src/__support/macros/optimization.h"
#include "src/__support/macros/properties/architectures.h"
#if defined(LIBC_TARGET_ARCH_IS_AARCH64) && defined(__ARM_FP)
@ -71,27 +72,35 @@ LIBC_INLINE int set_env(const fenv_t *) { return 0; }
namespace LIBC_NAMESPACE_DECL {
namespace fputil {
LIBC_INLINE int clear_except_if_required(int excepts) {
LIBC_INLINE static int clear_except_if_required([[maybe_unused]] int excepts) {
#ifndef LIBC_MATH_HAS_NO_EXCEPT
if (math_errhandling & MATH_ERREXCEPT)
return clear_except(excepts);
#endif // LIBC_MATH_HAS_NO_EXCEPT
return 0;
}
LIBC_INLINE int set_except_if_required(int excepts) {
LIBC_INLINE static int set_except_if_required([[maybe_unused]] int excepts) {
#ifndef LIBC_MATH_HAS_NO_EXCEPT
if (math_errhandling & MATH_ERREXCEPT)
return set_except(excepts);
#endif // LIBC_MATH_HAS_NO_EXCEPT
return 0;
}
LIBC_INLINE int raise_except_if_required(int excepts) {
LIBC_INLINE static int raise_except_if_required([[maybe_unused]] int excepts) {
#ifndef LIBC_MATH_HAS_NO_EXCEPT
if (math_errhandling & MATH_ERREXCEPT)
return raise_except(excepts);
#endif // LIBC_MATH_HAS_NO_EXCEPT
return 0;
}
LIBC_INLINE void set_errno_if_required(int err) {
LIBC_INLINE static void set_errno_if_required([[maybe_unused]] int err) {
#ifndef LIBC_MATH_HAS_NO_ERRNO
if (math_errhandling & MATH_ERRNO)
libc_errno = err;
#endif // LIBC_MATH_HAS_NO_ERRNO
}
} // namespace fputil

8
libc/src/__support/macros/optimization.h
View File

@ -63,4 +63,12 @@ LIBC_INLINE constexpr bool expects_bool_condition(T value, T expected) {
#define LIBC_MATH_HAS_INTERMEDIATE_COMP_IN_FLOAT
#endif
#if (LIBC_MATH & LIBC_MATH_NO_ERRNO)
#define LIBC_MATH_HAS_NO_ERRNO
#endif
#if (LIBC_MATH & LIBC_MATH_NO_EXCEPT)
#define LIBC_MATH_HAS_NO_EXCEPT
#endif
#endif // LLVM_LIBC_SRC___SUPPORT_MACROS_OPTIMIZATION_H