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
27 /* _controlfp masks and bitflags - x86 only so far */
30 /* Control word masks for unMask */
31 #define _MCW_EM 0x0008001F /* Error masks */
32 #define _MCW_IC 0x00040000 /* Infinity */
33 #define _MCW_RC 0x00000300 /* Rounding */
34 #define _MCW_PC 0x00030000 /* Precision */
36 /* Control word values for unNew (use with related unMask above) */
37 #define _EM_INVALID 0x00000010
38 #define _EM_DENORMAL 0x00080000
39 #define _EM_ZERODIVIDE 0x00000008
40 #define _EM_OVERFLOW 0x00000004
41 #define _EM_UNDERFLOW 0x00000002
42 #define _EM_INEXACT 0x00000001
43 #define _IC_AFFINE 0x00040000
44 #define _IC_PROJECTIVE 0x00000000
45 #define _RC_CHOP 0x00000300
46 #define _RC_UP 0x00000200
47 #define _RC_DOWN 0x00000100
48 #define _RC_NEAR 0x00000000
49 #define _PC_24 0x00020000
50 #define _PC_53 0x00010000
51 #define _PC_64 0x00000000
54 /* _statusfp bit flags */
55 #define _SW_INEXACT 0x00000001 /* inexact (precision) */
56 #define _SW_UNDERFLOW 0x00000002 /* underflow */
57 #define _SW_OVERFLOW 0x00000004 /* overflow */
58 #define _SW_ZERODIVIDE 0x00000008 /* zero divide */
59 #define _SW_INVALID 0x00000010 /* invalid */
61 #define _SW_UNEMULATED 0x00000040 /* unemulated instruction */
62 #define _SW_SQRTNEG 0x00000080 /* square root of a neg number */
63 #define _SW_STACKOVERFLOW 0x00000200 /* FP stack overflow */
64 #define _SW_STACKUNDERFLOW 0x00000400 /* FP stack underflow */
66 #define _SW_DENORMAL 0x00080000 /* denormal status bit */
68 /* fpclass constants */
69 #define _FPCLASS_SNAN 0x0001 /* Signaling "Not a Number" */
70 #define _FPCLASS_QNAN 0x0002 /* Quiet "Not a Number" */
71 #define _FPCLASS_NINF 0x0004 /* Negative Infinity */
72 #define _FPCLASS_NN 0x0008 /* Negative Normal */
73 #define _FPCLASS_ND 0x0010 /* Negative Denormal */
74 #define _FPCLASS_NZ 0x0020 /* Negative Zero */
75 #define _FPCLASS_PZ 0x0040 /* Positive Zero */
76 #define _FPCLASS_PD 0x0080 /* Positive Denormal */
77 #define _FPCLASS_PN 0x0100 /* Positive Normal */
78 #define _FPCLASS_PINF 0x0200 /* Positive Infinity */
80 double _copysign (double, double);
81 double _chgsign (double);
82 double _scalb(double, long);
84 double _nextafter(double, double);
93 #endif /* __WINE_FLOAT_H */