include/msvcrt/float.h

   1 /*
   2  * Floating point arithmetic.
   3  *
   4  * Derived from the mingw header written by Colin Peters.
   5  * Modified for Wine use by Hans Leidekker.
   6  * This file is in the public domain.
   7  */
   8
   9 #ifndef __WINE_FLOAT_H
  10 #define __WINE_FLOAT_H
  11
  12 #include <crtdefs.h>
  13
  14 #ifdef __cplusplus
  15 extern "C" {
  16 #endif
  17
  18 #define DBL_DIG        15
  19 #define DBL_EPSILON    2.2204460492503131e-016
  20 #define DBL_MANT_DIG   53
  21 #define DBL_MAX        1.7976931348623158e+308
  22 #define DBL_MAX_10_EXP 308
  23 #define DBL_MAX_EXP    1024
  24 #define DBL_MIN        2.2250738585072014e-308
  25 #define DBL_MIN_10_EXP (-307)
  26 #define DBL_MIN_EXP    (-1021)
  27
  28 #define _DBL_RADIX  2
  29 #define _DBL_ROUNDS 1
  30
  31 #define DBL_RADIX  _DBL_RADIX
  32 #define DBL_ROUNDS _DBL_ROUNDS
  33
  34 #define FLT_DIG        6
  35 #define FLT_EPSILON    1.192092896e-07F
  36 #define FLT_MANT_DIG   24
  37 #define FLT_MAX        3.402823466e+38F
  38 #define FLT_MAX_10_EXP 38
  39 #define FLT_MAX_EXP    128
  40 #define FLT_MIN        1.175494351e-38F
  41 #define FLT_MIN_10_EXP (-37)
  42 #define FLT_MIN_EXP    (-125)
  43
  44 #define FLT_RADIX  2
  45 #define FLT_ROUNDS 1
  46
  47 #define LDBL_DIG        DBL_DIG
  48 #define LDBL_EPSILON    DBL_EPSILON
  49 #define LDBL_MANT_DIG   DBL_MANT_DIG
  50 #define LDBL_MAX        DBL_MAX
  51 #define LDBL_MAX_10_EXP DBL_MAX_10_EXP
  52 #define LDBL_MAX_EXP    DBL_MAX_EXP
  53 #define LDBL_MIN        DBL_MIN
  54 #define LDBL_MIN_10_EXP DBL_MIN_10_EXP
  55 #define LDBL_MIN_EXP    DBL_MIN_EXP
  56
  57 #define _LDBL_RADIX  _DBL_RADIX
  58 #define _LDBL_ROUNDS _DBL_ROUNDS
  59
  60 #define LDBL_RADIX  _LDBL_RADIX
  61 #define LDBL_ROUNDS _LDBL_ROUNDS
  62
  63 /* _controlfp masks and bitflags - x86 only so far */
  64 #ifdef __i386__
  65
  66 /* Control word masks for unMask */
  67 #define _MCW_EM 0x0008001F  /* Error masks */
  68 #define _MCW_IC 0x00040000  /* Infinity */
  69 #define _MCW_RC 0x00000300  /* Rounding */
  70 #define _MCW_PC 0x00030000  /* Precision */
  71
  72 /* Control word values for unNew (use with related unMask above) */
  73 #define _EM_INVALID    0x00000010
  74 #define _EM_DENORMAL   0x00080000
  75 #define _EM_ZERODIVIDE 0x00000008
  76 #define _EM_OVERFLOW   0x00000004
  77 #define _EM_UNDERFLOW  0x00000002
  78 #define _EM_INEXACT    0x00000001
  79 #define _IC_AFFINE     0x00040000
  80 #define _IC_PROJECTIVE 0x00000000
  81 #define _RC_CHOP       0x00000300
  82 #define _RC_UP         0x00000200
  83 #define _RC_DOWN       0x00000100
  84 #define _RC_NEAR       0x00000000
  85 #define _PC_24         0x00020000
  86 #define _PC_53         0x00010000
  87 #define _PC_64         0x00000000
  88 #endif
  89
  90 /* _statusfp bit flags */
  91 #define _SW_INEXACT    0x00000001 /* inexact (precision) */
  92 #define _SW_UNDERFLOW  0x00000002 /* underflow */
  93 #define _SW_OVERFLOW   0x00000004 /* overflow */
  94 #define _SW_ZERODIVIDE 0x00000008 /* zero divide */
  95 #define _SW_INVALID    0x00000010 /* invalid */
  96
  97 #define _SW_UNEMULATED     0x00000040  /* unemulated instruction */
  98 #define _SW_SQRTNEG        0x00000080  /* square root of a neg number */
  99 #define _SW_STACKOVERFLOW  0x00000200  /* FP stack overflow */
 100 #define _SW_STACKUNDERFLOW 0x00000400  /* FP stack underflow */
 101
 102 #define _SW_DENORMAL 0x00080000 /* denormal status bit */
 103
 104 /* fpclass constants */
 105 #define _FPCLASS_SNAN 0x0001  /* Signaling "Not a Number" */
 106 #define _FPCLASS_QNAN 0x0002  /* Quiet "Not a Number" */
 107 #define _FPCLASS_NINF 0x0004  /* Negative Infinity */
 108 #define _FPCLASS_NN   0x0008  /* Negative Normal */
 109 #define _FPCLASS_ND   0x0010  /* Negative Denormal */
 110 #define _FPCLASS_NZ   0x0020  /* Negative Zero */
 111 #define _FPCLASS_PZ   0x0040  /* Positive Zero */
 112 #define _FPCLASS_PD   0x0080  /* Positive Denormal */
 113 #define _FPCLASS_PN   0x0100  /* Positive Normal */
 114 #define _FPCLASS_PINF 0x0200  /* Positive Infinity */
 115
 116 /* floating point error signals */
 117 #define _FPE_INVALID            0x81
 118 #define _FPE_DENORMAL           0x82
 119 #define _FPE_ZERODIVIDE         0x83
 120 #define _FPE_OVERFLOW           0x84
 121 #define _FPE_UNDERFLOW          0x85
 122 #define _FPE_INEXACT            0x86
 123 #define _FPE_UNEMULATED         0x87
 124 #define _FPE_SQRTNEG            0x88
 125 #define _FPE_STACKOVERFLOW      0x8a
 126 #define _FPE_STACKUNDERFLOW     0x8b
 127 #define _FPE_EXPLICITGEN        0x8c
 128
 129 double __cdecl _copysign (double, double);
 130 double __cdecl _chgsign (double);
 131 double __cdecl _scalb(double, long);
 132 double __cdecl _logb(double);
 133 double __cdecl _nextafter(double, double);
 134 int    __cdecl _finite(double);
 135 int    __cdecl _isnan(double);
 136 int    __cdecl _fpclass(double);
 137
 138 #ifdef __cplusplus
 139 }
 140 #endif
 141
 142 #endif /* __WINE_FLOAT_H */