diff options
Diffstat (limited to 'sysdeps/ieee754/huge_val.h')
| -rw-r--r-- | sysdeps/ieee754/huge_val.h | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/sysdeps/ieee754/huge_val.h b/sysdeps/ieee754/huge_val.h index 9d1785b75f..a2520859e4 100644 --- a/sysdeps/ieee754/huge_val.h +++ b/sysdeps/ieee754/huge_val.h @@ -27,6 +27,17 @@ /* IEEE positive infinity (-HUGE_VAL is negative infinity). */ +#ifdef __GNUC__ + +#define HUGE_VAL \ + (__extension__ \ + ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \ + { __l: 0x7ff0000000000000ULL }).__d) + +#else /* not GCC */ + +typedef union { unsigned char __c[8]; double __d; } __huge_val_t; + #if __BYTE_ORDER == __BIG_ENDIAN #define __HUGE_VAL_bytes { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 } #endif @@ -34,13 +45,9 @@ #define __HUGE_VAL_bytes { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f } #endif -#define __huge_val_t union { unsigned char __c[8]; double __d; } -#ifdef __GNUC__ -#define HUGE_VAL (__extension__ \ - ((__huge_val_t) { __c: __HUGE_VAL_bytes }).__d) -#else /* Not GCC. */ static __huge_val_t __huge_val = { __HUGE_VAL_bytes }; #define HUGE_VAL (__huge_val.__d) + #endif /* GCC. */ @@ -48,6 +55,17 @@ static __huge_val_t __huge_val = { __HUGE_VAL_bytes }; #ifdef __USE_ISOC9X +#ifdef __GNUC__ + +#define HUGE_VALF \ + (__extension__ \ + ((union { unsigned __l __attribute__((__mode__(__SI__))); float __d; }) \ + { __l: 0x7f800000UL }).__d) + +#else /* not GCC */ + +typedef union { unsigned char __c[4]; float __f; } __huge_valf_t; + #if __BYTE_ORDER == __BIG_ENDIAN #define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 } #endif @@ -55,13 +73,9 @@ static __huge_val_t __huge_val = { __HUGE_VAL_bytes }; #define __HUGE_VALF_bytes { 0, 0, 0x80, 0x7f } #endif -#define __huge_valf_t union { unsigned char __c[4]; float __f; } -#ifdef __GNUC__ -#define HUGE_VALF (__extension__ \ - ((__huge_valf_t) { __c: __HUGE_VALF_bytes }).__f) -#else /* Not GCC. */ static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes }; #define HUGE_VALF (__huge_valf.__f) + #endif /* GCC. */ @@ -69,6 +83,6 @@ static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes }; same as `double'. */ #define HUGE_VALL HUGE_VAL -#endif /* __USE_ISOC9X. */ +#endif /* __USE_ISOC9X. */ -#endif /* huge_val.h */ +#endif /* huge_val.h */ |