forked from OSchip/llvm-project
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/* ===-- int_math.h - internal math inlines ---------------------------------===
|
|
*
|
|
* The LLVM Compiler Infrastructure
|
|
*
|
|
* This file is dual licensed under the MIT and the University of Illinois Open
|
|
* Source Licenses. See LICENSE.TXT for details.
|
|
*
|
|
* ===-----------------------------------------------------------------------===
|
|
*
|
|
* This file is not part of the interface of this library.
|
|
*
|
|
* This file defines substitutes for the libm functions used in some of the
|
|
* compiler-rt implementations, defined in such a way that there is not a direct
|
|
* dependency on libm or math.h. Instead, we use the compiler builtin versions
|
|
* where available. This reduces our dependencies on the system SDK by foisting
|
|
* the responsibility onto the compiler.
|
|
*
|
|
* ===-----------------------------------------------------------------------===
|
|
*/
|
|
|
|
#ifndef INT_MATH_H
|
|
#define INT_MATH_H
|
|
|
|
#ifndef __has_builtin
|
|
# define __has_builtin(x) 0
|
|
#endif
|
|
|
|
#define CRT_INFINITY __builtin_huge_valf()
|
|
|
|
#define crt_isinf(x) __builtin_isinf((x))
|
|
#define crt_isnan(x) __builtin_isnan((x))
|
|
|
|
/* Define crt_isfinite in terms of the builtin if available, otherwise provide
|
|
* an alternate version in terms of our other functions. This supports some
|
|
* versions of GCC which didn't have __builtin_isfinite.
|
|
*/
|
|
#if __has_builtin(__builtin_isfinite)
|
|
# define crt_isfinite(x) __builtin_isfinite((x))
|
|
#else
|
|
# define crt_isfinite(x) \
|
|
__extension__(({ \
|
|
__typeof((x)) x_ = (x); \
|
|
!crt_isinf(x_) && !crt_isnan(x_); \
|
|
}))
|
|
#endif
|
|
|
|
#define crt_copysign(x, y) __builtin_copysign((x), (y))
|
|
#define crt_copysignf(x, y) __builtin_copysignf((x), (y))
|
|
#define crt_copysignl(x, y) __builtin_copysignl((x), (y))
|
|
|
|
#define crt_fabs(x) __builtin_fabs((x))
|
|
#define crt_fabsf(x) __builtin_fabsf((x))
|
|
#define crt_fabsl(x) __builtin_fabsl((x))
|
|
|
|
#define crt_fmax(x, y) __builtin_fmax((x), (y))
|
|
#define crt_fmaxf(x, y) __builtin_fmaxf((x), (y))
|
|
#define crt_fmaxl(x, y) __builtin_fmaxl((x), (y))
|
|
|
|
#define crt_logb(x) __builtin_logb((x))
|
|
#define crt_logbf(x) __builtin_logbf((x))
|
|
#define crt_logbl(x) __builtin_logbl((x))
|
|
|
|
#define crt_scalbn(x, y) __builtin_scalbn((x), (y))
|
|
#define crt_scalbnf(x, y) __builtin_scalbnf((x), (y))
|
|
#define crt_scalbnl(x, y) __builtin_scalbnl((x), (y))
|
|
|
|
#endif /* INT_MATH_H */
|