diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32/math_config.h')
| -rw-r--r-- | sysdeps/ieee754/flt-32/math_config.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sysdeps/ieee754/flt-32/math_config.h b/sysdeps/ieee754/flt-32/math_config.h index 8d9c8ee..33ea631 100644 --- a/sysdeps/ieee754/flt-32/math_config.h +++ b/sysdeps/ieee754/flt-32/math_config.h @@ -165,6 +165,7 @@ issignalingf_inline (float x) #define BIT_WIDTH 32 #define MANTISSA_WIDTH 23 #define EXPONENT_WIDTH 8 +#define EXPONENT_BIAS 127 #define MANTISSA_MASK 0x007fffff #define EXPONENT_MASK 0x7f800000 #define EXP_MANT_MASK 0x7fffffff @@ -177,12 +178,24 @@ is_nan (uint32_t x) return (x & EXP_MANT_MASK) > EXPONENT_MASK; } +static inline bool +is_inf (uint32_t x) +{ + return (x << 1) == (EXPONENT_MASK << 1); +} + static inline uint32_t get_mantissa (uint32_t x) { return x & MANTISSA_MASK; } +static inline int +get_exponent (uint32_t x) +{ + return (int)((x >> MANTISSA_WIDTH & 0xff) - EXPONENT_BIAS); +} + /* Convert integer number X, unbiased exponent EP, and sign S to double: result = X * 2^(EP+1 - exponent_bias) @@ -208,6 +221,8 @@ attribute_hidden float __math_uflowf (uint32_t); attribute_hidden float __math_may_uflowf (uint32_t); attribute_hidden float __math_divzerof (uint32_t); attribute_hidden float __math_invalidf (float); +attribute_hidden int __math_invalidf_i (int); +attribute_hidden long int __math_invalidf_li (long int); attribute_hidden float __math_edomf (float x); /* Shared between expf, exp2f, exp10f, and powf. */ |