ref: 64afa666f159be2f11dc99a3f42a72c48fa38b6f
dir: /ieee754.h/
#ifndef __IEEE754_H_ #define __IEEE754_H_ union ieee754_float { float f; struct { #if BYTE_ORDER == BIG_ENDIAN unsigned int negative:1; unsigned int exponent:8; unsigned int mantissa:23; #elif BYTE_ORDER == LITTLE_ENDIAN unsigned int mantissa:23; unsigned int exponent:8; unsigned int negative:1; #else #error which endian? #endif }ieee; }; #define IEEE754_FLOAT_BIAS 0x7f union ieee754_double { double d; struct { #if BYTE_ORDER == BIG_ENDIAN unsigned int negative:1; unsigned int exponent:11; unsigned int mantissa0:20; unsigned int mantissa1:32; #else unsigned int mantissa1:32; unsigned int mantissa0:20; unsigned int exponent:11; unsigned int negative:1; #endif }ieee; }; #define IEEE754_DOUBLE_BIAS 0x3ff union ieee854_long_double { long double d; struct { #if BYTE_ORDER == BIG_ENDIAN unsigned int negative:1; unsigned int exponent:15; unsigned int empty:16; unsigned int mantissa0:32; unsigned int mantissa1:32; #else unsigned int mantissa1:32; unsigned int mantissa0:32; unsigned int exponent:15; unsigned int negative:1; unsigned int empty:16; #endif }ieee; }; #define IEEE854_LONG_DOUBLE_BIAS 0x3fff #endif