154 lines
4.3 KiB
C
154 lines
4.3 KiB
C
/* float.h
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Defines implementation specific macros for dealing with
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floating point.
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Copyright (c) Borland International 1987,1988,1990
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All Rights Reserved.
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*/
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#ifndef __FLOAT_H
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#define __FLOAT_H
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#if __STDC__
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#define _Cdecl
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#else
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#define _Cdecl cdecl
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#endif
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#ifndef __PAS__
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#define _CType _Cdecl
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#else
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#define _CType pascal
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#endif
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#define FLT_RADIX 2
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#define FLT_ROUNDS 1
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#define FLT_GUARD 1
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#define FLT_NORMALIZE 1
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#define DBL_DIG 15
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#define FLT_DIG 6
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#define LDBL_DIG 19
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#define DBL_MANT_DIG 53
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#define FLT_MANT_DIG 24
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#define LDBL_MANT_DIG 64
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#define DBL_EPSILON 2.2204460492503131E-16
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#define FLT_EPSILON 1.19209290E-07F
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#define LDBL_EPSILON 1.084202172485504E-19
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/* smallest positive IEEE normal numbers */
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#define DBL_MIN 2.2250738585072014E-308
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#define FLT_MIN 1.17549435E-38F
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#define LDBL_MIN _tiny_ldble
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#define DBL_MAX _huge_dble
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#define FLT_MAX _huge_flt
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#define LDBL_MAX _huge_ldble
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#define DBL_MAX_EXP +1024
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#define FLT_MAX_EXP +128
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#define LDBL_MAX_EXP +16384
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#define DBL_MAX_10_EXP +308
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#define FLT_MAX_10_EXP +38
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#define LDBL_MAX_10_EXP +4932
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#define DBL_MIN_10_EXP -307
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#define FLT_MIN_10_EXP -37
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#define LDBL_MIN_10_EXP -4931
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#define DBL_MIN_EXP -1021
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#define FLT_MIN_EXP -125
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#define LDBL_MIN_EXP -16381
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extern float _Cdecl _huge_flt;
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extern double _Cdecl _huge_dble;
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extern long double _Cdecl _huge_ldble;
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extern long double _Cdecl _tiny_ldble;
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#ifdef __cplusplus
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extern "C" {
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#endif
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unsigned int _Cdecl _clear87(void);
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unsigned int _Cdecl _control87(unsigned int __newcw, unsigned int __mask);
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void _Cdecl _fpreset(void);
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unsigned int _Cdecl _status87(void);
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#ifdef __cplusplus
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}
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#endif
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#if !__STDC__
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/* 8087/80287 Status Word format */
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#define SW_INVALID 0x0001 /* Invalid operation */
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#define SW_DENORMAL 0x0002 /* Denormalized operand */
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#define SW_ZERODIVIDE 0x0004 /* Zero divide */
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#define SW_OVERFLOW 0x0008 /* Overflow */
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#define SW_UNDERFLOW 0x0010 /* Underflow */
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#define SW_INEXACT 0x0020 /* Precision (Inexact result) */
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/* 8087/80287 Control Word format */
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#define MCW_EM 0x003f /* interrupt Exception Masks*/
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#define EM_INVALID 0x0001 /* invalid */
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#define EM_DENORMAL 0x0002 /* denormal */
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#define EM_ZERODIVIDE 0x0004 /* zero divide */
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#define EM_OVERFLOW 0x0008 /* overflow */
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#define EM_UNDERFLOW 0x0010 /* underflow */
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#define EM_INEXACT 0x0020 /* inexact (precision) */
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#define MCW_IC 0x1000 /* Infinity Control */
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#define IC_AFFINE 0x1000 /* affine */
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#define IC_PROJECTIVE 0x0000 /* projective */
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#define MCW_RC 0x0c00 /* Rounding Control */
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#define RC_CHOP 0x0c00 /* chop */
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#define RC_UP 0x0800 /* up */
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#define RC_DOWN 0x0400 /* down */
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#define RC_NEAR 0x0000 /* near */
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#define MCW_PC 0x0300 /* Precision Control */
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#define PC_24 0x0000 /* 24 bits */
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#define PC_53 0x0200 /* 53 bits */
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#define PC_64 0x0300 /* 64 bits */
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/* 8087/80287 Initial Control Word */
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/* use affine infinity, mask underflow and precision exceptions */
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#define CW_DEFAULT _default87
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extern unsigned int _Cdecl _default87;
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/*
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SIGFPE signal error types (for integer & float exceptions).
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*/
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#define FPE_INTOVFLOW 126 /* 80x86 Interrupt on overflow */
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#define FPE_INTDIV0 127 /* 80x86 Integer divide by zero */
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#define FPE_INVALID 129 /* 80x87 invalid operation */
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#define FPE_ZERODIVIDE 131 /* 80x87 divide by zero */
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#define FPE_OVERFLOW 132 /* 80x87 arithmetic overflow */
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#define FPE_UNDERFLOW 133 /* 80x87 arithmetic underflow */
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#define FPE_INEXACT 134 /* 80x87 precision loss */
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#define FPE_STACKFAULT 135 /* 80x87 stack overflow */
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#define FPE_EXPLICITGEN 140 /* When SIGFPE is raise()'d */
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/*
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SIGSEGV signal error types.
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*/
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#define SEGV_BOUND 10 /* A BOUND violation (SIGSEGV) */
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#define SEGV_EXPLICITGEN 11 /* When SIGSEGV is raise()'d */
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/*
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SIGILL signal error types.
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*/
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#define ILL_EXECUTION 20 /* Illegal operation exception */
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#define ILL_EXPLICITGEN 21 /* When SIGILL is raise()'d */
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#endif /* !__STDC__ */
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#endif
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