?? float.h
字號(hào):
/* - FLOAT.H -
The ANSI floating point limits.
$Revision: 38615 $
Copyright 1986 - 1999 IAR Systems. All rights reserved.
*/
#ifndef _FLOAT_INCLUDED
#ifndef _SYSTEM_BUILD
#pragma system_include
#endif
#include "sysmac.h"
#define FLT_RADIX 2
#define FLT_ROUNDS 1
#define FLT_MANT_DIG 24
#define FLT_EPSILON 1.192092896e-07
#define FLT_DIG 6 /* Digits of precision */
#define FLT_MIN_EXP -125
#define FLT_MIN 1.175494351e-38 /* Min positive value */
#define FLT_MIN_10_EXP -37 /* Min decimal exponent */
#define FLT_MAX_EXP 128
#define FLT_MAX 3.402823466e+38 /* Max value */
#define FLT_MAX_10_EXP 38 /* Max decimal exponent */
#if __FLOAT_SIZE__ == __DOUBLE_SIZE__
#define DBL_MANT_DIG FLT_MANT_DIG
#define DBL_EPSILON FLT_EPSILON
#define DBL_DIG FLT_DIG
#define DBL_MIN_EXP FLT_MIN_EXP
#define DBL_MIN FLT_MIN
#define DBL_MIN_10_EXP FLT_MIN_10_EXP
#define DBL_MAX_EXP FLT_MAX_EXP
#define DBL_MAX FLT_MAX
#define DBL_MAX_10_EXP FLT_MAX_10_EXP
#else
#define DBL_MANT_DIG 53
#define DBL_EPSILON 2.2204460492503131e-016
#define DBL_DIG 15 /* Digits of precision */
#define DBL_MIN_EXP -1021
#define DBL_MIN 2.2250738585072014e-308 /* Min positive value */
#define DBL_MIN_10_EXP -307 /* Min decimal exponent */
#define DBL_MAX_EXP 1024
#define DBL_MAX 1.7976931348623158e+308 /* Max value */
#define DBL_MAX_10_EXP 308 /* Max decimal exponent */
#endif
#if __DOUBLE_SIZE__ == __LONG_DOUBLE_SIZE__ /* Must be */
#define LDBL_MANT_DIG DBL_MANT_DIG
#define LDBL_EPSILON DBL_EPSILON
#define LDBL_DIG DBL_DIG
#define LDBL_MIN_EXP DBL_MIN_EXP
#define LDBL_MIN DBL_MIN
#define LDBL_MIN_10_EXP DBL_MIN_10_EXP
#define LDBL_MAX_EXP DBL_MAX_EXP
#define LDBL_MAX DBL_MAX
#define LDBL_MAX_10_EXP DBL_MAX_10_EXP
#endif
#define _FLOAT_INCLUDED
#endif
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