2 * Floating point arithmetic.
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.
10 #define __WINE_FLOAT_H
11 #ifndef __WINE_USE_MSVCRT
12 #define __WINE_USE_MSVCRT
16 # ifdef USE_MSVCRT_PREFIX
17 # define MSVCRT(x) MSVCRT_##x
28 #define DBL_EPSILON 2.2204460492503131e-016
29 #define DBL_MANT_DIG 53
30 #define DBL_MAX 1.7976931348623158e+308
31 #define DBL_MAX_10_EXP 308
32 #define DBL_MAX_EXP 1024
33 #define DBL_MIN 2.2250738585072014e-308
34 #define DBL_MIN_10_EXP (-307)
35 #define DBL_MIN_EXP (-1021)
40 #define DBL_RADIX _DBL_RADIX
41 #define DBL_ROUNDS _DBL_ROUNDS
44 #define FLT_EPSILON 1.192092896e-07F
45 #define FLT_MANT_DIG 24
46 #define FLT_MAX 3.402823466e+38F
47 #define FLT_MAX_10_EXP 38
48 #define FLT_MAX_EXP 128
49 #define FLT_MIN 1.175494351e-38F
50 #define FLT_MIN_10_EXP (-37)
51 #define FLT_MIN_EXP (-125)
56 #define LDBL_DIG DBL_DIG
57 #define LDBL_EPSILON DBL_EPSILON
58 #define LDBL_MANT_DIG DBL_MANT_DIG
59 #define LDBL_MAX DBL_MAX
60 #define LDBL_MAX_10_EXP DBL_MAX_10_EXP
61 #define LDBL_MAX_EXP DBL_MAX_EXP
62 #define LDBL_MIN DBL_MIN
63 #define LDBL_MIN_10_EXP DBL_MIN_10_EXP
64 #define LDBL_MIN_EXP DBL_MIN_EXP
66 #define _LDBL_RADIX _DBL_RADIX
67 #define _LDBL_ROUNDS _DBL_ROUNDS
69 #define LDBL_RADIX _LDBL_RADIX
70 #define LDBL_ROUNDS _LDBL_ROUNDS
72 /* _controlfp masks and bitflags - x86 only so far */
75 /* Control word masks for unMask */
76 #define _MCW_EM 0x0008001F /* Error masks */
77 #define _MCW_IC 0x00040000 /* Infinity */
78 #define _MCW_RC 0x00000300 /* Rounding */
79 #define _MCW_PC 0x00030000 /* Precision */
81 /* Control word values for unNew (use with related unMask above) */
82 #define _EM_INVALID 0x00000010
83 #define _EM_DENORMAL 0x00080000
84 #define _EM_ZERODIVIDE 0x00000008
85 #define _EM_OVERFLOW 0x00000004
86 #define _EM_UNDERFLOW 0x00000002
87 #define _EM_INEXACT 0x00000001
88 #define _IC_AFFINE 0x00040000
89 #define _IC_PROJECTIVE 0x00000000
90 #define _RC_CHOP 0x00000300
91 #define _RC_UP 0x00000200
92 #define _RC_DOWN 0x00000100
93 #define _RC_NEAR 0x00000000
94 #define _PC_24 0x00020000
95 #define _PC_53 0x00010000
96 #define _PC_64 0x00000000
99 /* _statusfp bit flags */
100 #define _SW_INEXACT 0x00000001 /* inexact (precision) */
101 #define _SW_UNDERFLOW 0x00000002 /* underflow */
102 #define _SW_OVERFLOW 0x00000004 /* overflow */
103 #define _SW_ZERODIVIDE 0x00000008 /* zero divide */
104 #define _SW_INVALID 0x00000010 /* invalid */
106 #define _SW_UNEMULATED 0x00000040 /* unemulated instruction */
107 #define _SW_SQRTNEG 0x00000080 /* square root of a neg number */
108 #define _SW_STACKOVERFLOW 0x00000200 /* FP stack overflow */
109 #define _SW_STACKUNDERFLOW 0x00000400 /* FP stack underflow */
111 #define _SW_DENORMAL 0x00080000 /* denormal status bit */
113 /* fpclass constants */
114 #define _FPCLASS_SNAN 0x0001 /* Signaling "Not a Number" */
115 #define _FPCLASS_QNAN 0x0002 /* Quiet "Not a Number" */
116 #define _FPCLASS_NINF 0x0004 /* Negative Infinity */
117 #define _FPCLASS_NN 0x0008 /* Negative Normal */
118 #define _FPCLASS_ND 0x0010 /* Negative Denormal */
119 #define _FPCLASS_NZ 0x0020 /* Negative Zero */
120 #define _FPCLASS_PZ 0x0040 /* Positive Zero */
121 #define _FPCLASS_PD 0x0080 /* Positive Denormal */
122 #define _FPCLASS_PN 0x0100 /* Positive Normal */
123 #define _FPCLASS_PINF 0x0200 /* Positive Infinity */
125 double _copysign (double, double);
126 double _chgsign (double);
127 double _scalb(double, long);
128 double _logb(double);
129 double _nextafter(double, double);
132 int _fpclass(double);
138 #endif /* __WINE_FLOAT_H */