ref: 6c1b82eaa636cf46fe697cde85a37f4b928cc8d2
dir: /src/ieee754.h/
#pragma once
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