131 lines
3.9 KiB
C++
131 lines
3.9 KiB
C++
|
/* float.h
|
|||
|
|
|
|||
|
|
Defines implementation specific macros for dealing with
|
|||
|
|
floating point.
|
|||
|
|
|
|||
|
|
Copyright (c) Borland International 1987,1988
|
|||
|
|
All Rights Reserved.
|
|||
|
|
*/
|
|||
|
|
#if __STDC__
|
|||
|
|
#define _Cdecl
|
|||
|
|
#else
|
|||
|
|
#define _Cdecl cdecl
|
|||
|
|
#endif
|
|||
|
|
|
|||
|
|
#define FLT_RADIX 2
|
|||
|
|
#define FLT_ROUNDS 1
|
|||
|
|
#define FLT_GUARD 1
|
|||
|
|
#define FLT_NORMALIZE 1
|
|||
|
|
|
|||
|
|
#define DBL_DIG 15
|
|||
|
|
#define FLT_DIG 6
|
|||
|
|
#define LDBL_DIG 19
|
|||
|
|
|
|||
|
|
#define DBL_MANT_DIG 53
|
|||
|
|
#define FLT_MANT_DIG 24
|
|||
|
|
#define LDBL_MANT_DIG 64
|
|||
|
|
|
|||
|
|
#define DBL_EPSILON 2.2204460492503131E-16
|
|||
|
|
#define FLT_EPSILON 1.19209290E-07F
|
|||
|
|
#define LDBL_EPSILON 1.084202172485504E-19
|
|||
|
|
|
|||
|
|
/* smallest positive IEEE normal numbers */
|
|||
|
|
#define DBL_MIN 2.2250738585072014E-308
|
|||
|
|
#define FLT_MIN 1.17549435E-38F
|
|||
|
|
#define LDBL_MIN _tiny_ldble
|
|||
|
|
|
|||
|
|
#define DBL_MAX _huge_dble
|
|||
|
|
#define FLT_MAX _huge_flt
|
|||
|
|
#define LDBL_MAX _huge_ldble
|
|||
|
|
|
|||
|
|
#define DBL_MAX_EXP +1024
|
|||
|
|
#define FLT_MAX_EXP +128
|
|||
|
|
#define LDBL_MAX_EXP +16384
|
|||
|
|
|
|||
|
|
#define DBL_MAX_10_EXP +308
|
|||
|
|
#define FLT_MAX_10_EXP +38
|
|||
|
|
#define LDBL_MAX_10_EXP +4932
|
|||
|
|
|
|||
|
|
#define DBL_MIN_10_EXP -307
|
|||
|
|
#define FLT_MIN_10_EXP -37
|
|||
|
|
#define LDBL_MIN_10_EXP -4931
|
|||
|
|
|
|||
|
|
#define DBL_MIN_EXP -1021
|
|||
|
|
#define FLT_MIN_EXP -125
|
|||
|
|
#define LDBL_MIN_EXP -16381
|
|||
|
|
|
|||
|
|
extern float _Cdecl _huge_flt;
|
|||
|
|
extern double _Cdecl _huge_dble;
|
|||
|
|
extern long double _Cdecl _huge_ldble;
|
|||
|
|
extern long double _Cdecl _tiny_ldble;
|
|||
|
|
|
|||
|
|
unsigned int _Cdecl _clear87(void);
|
|||
|
|
unsigned int _Cdecl _control87(unsigned int new, unsigned int mask);
|
|||
|
|
void _Cdecl _fpreset(void);
|
|||
|
|
unsigned int _Cdecl _status87(void);
|
|||
|
|
|
|||
|
|
/* 8087/80287 Status Word format */
|
|||
|
|
|
|||
|
|
#define SW_INVALID 0x0001 /* Invalid operation */
|
|||
|
|
#define SW_DENORMAL 0x0002 /* Denormalized operand */
|
|||
|
|
#define SW_ZERODIVIDE 0x0004 /* Zero divide */
|
|||
|
|
#define SW_OVERFLOW 0x0008 /* Overflow */
|
|||
|
|
#define SW_UNDERFLOW 0x0010 /* Underflow */
|
|||
|
|
#define SW_INEXACT 0x0020 /* Precision (Inexact result) */
|
|||
|
|
|
|||
|
|
/* 8087/80287 Control Word format */
|
|||
|
|
|
|||
|
|
#define MCW_EM 0x003f /* interrupt Exception Masks */
|
|||
|
|
#define EM_INVALID 0x0001 /* invalid */
|
|||
|
|
#define EM_DENORMAL 0x0002 /* denormal */
|
|||
|
|
#define EM_ZERODIVIDE 0x0004 /* zero divide */
|
|||
|
|
#define EM_OVERFLOW 0x0008 /* overflow */
|
|||
|
|
#define EM_UNDERFLOW 0x0010 /* underflow */
|
|||
|
|
#define EM_INEXACT 0x0020 /* inexact (precision) */
|
|||
|
|
|
|||
|
|
#define MCW_IC 0x1000 /* Infinity Control */
|
|||
|
|
#define IC_AFFINE 0x1000 /* affine */
|
|||
|
|
#define IC_PROJECTIVE 0x0000 /* projective */
|
|||
|
|
|
|||
|
|
#define MCW_RC 0x0c00 /* Rounding Control */
|
|||
|
|
#define RC_CHOP 0x0c00 /* chop */
|
|||
|
|
#define RC_UP 0x0800 /* up */
|
|||
|
|
#define RC_DOWN 0x0400 /* down */
|
|||
|
|
#define RC_NEAR 0x0000 /* near */
|
|||
|
|
|
|||
|
|
#define MCW_PC 0x0300 /* Precision Control */
|
|||
|
|
#define PC_24 0x0000 /* 24 bits */
|
|||
|
|
#define PC_53 0x0200 /* 53 bits */
|
|||
|
|
#define PC_64 0x0300 /* 64 bits */
|
|||
|
|
|
|||
|
|
/* 8087/80287 Initial Control Word */
|
|||
|
|
/* use affine infinity, mask underflow and precision exceptions */
|
|||
|
|
|
|||
|
|
#define CW_DEFAULT (RC_NEAR+PC_64+IC_AFFINE+EM_UNDERFLOW+EM_INEXACT)
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
SIGFPE signal error types (for integer & float exceptions).
|
|||
|
|
*/
|
|||
|
|
#define FPE_INTOVFLOW 126 /* 80x86 Interrupt on overflow */
|
|||
|
|
#define FPE_INTDIV0 127 /* 80x86 Integer divide by zero */
|
|||
|
|
|
|||
|
|
#define FPE_INVALID 129 /* 80x87 invalid operation */
|
|||
|
|
#define FPE_ZERODIVIDE 131 /* 80x87 divide by zero */
|
|||
|
|
#define FPE_OVERFLOW 132 /* 80x87 arithmetic overflow */
|
|||
|
|
#define FPE_UNDERFLOW 133 /* 80x87 arithmetic underflow */
|
|||
|
|
#define FPE_INEXACT 134 /* 80x87 precision loss */
|
|||
|
|
#define FPE_EXPLICITGEN 140 /* When SIGFPE is raise()'d */
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
SIGSEGV signal error types.
|
|||
|
|
*/
|
|||
|
|
#define SEGV_BOUND 10 /* A BOUND violation (SIGSEGV) */
|
|||
|
|
#define SEGV_EXPLICITGEN 11 /* When SIGSEGV is raise()'d */
|
|||
|
|
|
|||
|
|
/*
|
|||
|
|
SIGILL signal error types.
|
|||
|
|
*/
|
|||
|
|
#define ILL_EXECUTION 20 /* Illegal operation exception */
|
|||
|
|
#define ILL_EXPLICITGEN 21 /* When SIGILL is raise()'d */
|
|||
|
|
|
|||
|
|
|