Nick Desaulniers 5a7a8f73c7
[libc] fix type generic stdc_leading_zeros for GCC (#79917)
GCC does not support _Generic in C++ mode. Use inline function definitions with
function overloading in __cplusplus mode.
2024-01-29 16:40:03 -08:00

39 lines
1.5 KiB
C

//===-- Definition of macros to be used with stdbit functions ----------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef __LLVM_LIBC_MACROS_STDBIT_MACROS_H
#define __LLVM_LIBC_MACROS_STDBIT_MACROS_H
#ifdef __cplusplus
inline unsigned char stdc_leading_zeros(unsigned char x) {
return stdc_leading_zeros_uc(x);
}
inline unsigned short stdc_leading_zeros(unsigned short x) {
return stdc_leading_zeros_us(x);
}
inline unsigned stdc_leading_zeros(unsigned x) {
return stdc_leading_zeros_ui(x);
}
inline unsigned long stdc_leading_zeros(unsigned long x) {
return stdc_leading_zeros_ul(x);
}
inline unsigned long long stdc_leading_zeros(unsigned long long x) {
return stdc_leading_zeros_ull(x);
}
#else
#define stdc_leading_zeros(x) \
_Generic((x), \
unsigned char: stdc_leading_zeros_uc, \
unsigned short: stdc_leading_zeros_us, \
unsigned: stdc_leading_zeros_ui, \
unsigned long: stdc_leading_zeros_ul, \
unsigned long long: stdc_leading_zeros_ull)(x)
#endif // __cplusplus
#endif // __LLVM_LIBC_MACROS_STDBIT_MACROS_H