float.h

来自「TI公司的CCS一些常用的函数库」· C头文件 代码 · 共 59 行

///////////////////////////////////////////////////////////////////////////
////        (C) Copyright 1996,2003 Custom Computer Services           ////
//// This source code may only be used by licensed users of the CCS C  ////
//// compiler.  This source code may only be distributed to other      ////
//// licensed users of the CCS C compiler.  No other use, reproduction ////
//// or distribution is permitted without written permission.          ////
//// Derivative programs created using this software in object code    ////
//// form are not restricted in any way.                               ////
///////////////////////////////////////////////////////////////////////////

/* float.h  */


#ifndef _FLOAT
#define _FLOAT
    /* Float properties */

#define FLT_RADIX       2
#define FLT_MANT_DIG    24                      // # of bits in mantissa

#define FLT_DIG         6                       // # of decimal digits of precision

#define FLT_MIN_EXP     (-125)                  // min binary exponent
#define FLT_MIN_10_EXP  (-37)                   // min decimal exponent
#define FLT_MAX_EXP     128                     // max binary exponent
#define FLT_MAX_10_EXP  38                      // max decimal exponent
#define FLT_MAX         3.402823466e+38F        // max value
#define FLT_EPSILON     1.192092896e-07F        // smallest such that 1.0+FLT_EPSILON != 1.0
#define FLT_MIN         1.175494351e-38F        // min positive value


      /* Double properties */
#define DBL_MANT_DIG    24                      // # of bits in mantissa

#define DBL_DIG         6                       // # of decimal digits of precision

#define DBL_MIN_EXP     (-125)                  // min binary exponent
#define DBL_MIN_10_EXP  (-37)                   // min decimal exponent
#define DBL_MAX_EXP     128                     // max binary exponent
#define DBL_MAX_10_EXP  38                      // max decimal exponent
#define DBL_MAX         3.402823466e+38F        // max value
#define DBL_EPSILON     1.192092896e-07F        // smallest such that 1.0+FLT_EPSILON != 1.0
#define DBL_MIN         1.175494351e-38F        // min positive value

         /*Long double properties */
         
#define LDBL_MANT_DIG    24                      // # of bits in mantissa

#define LDBL_DIG         6                       // # of decimal digits of precision

#define LDBL_MIN_EXP     (-125)                  // min binary exponent
#define LDBL_MIN_10_EXP  (-37)                   // min decimal exponent
#define LDBL_MAX_EXP     128                     // max binary exponent
#define LDBL_MAX_10_EXP  38                      // max decimal exponent
#define LDBL_MAX         3.402823466e+38F        // max value
#define LDBL_EPSILON     1.192092896e-07F        // smallest such that 1.0+FLT_EPSILON != 1.0
#define LDBL_MIN         1.175494351e-38F        // min positive value
#endif