94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
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/*
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* Floating point arithmetic.
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*
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* Derived from the mingw header written by Colin Peters.
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* Modified for Wine use by Hans Leidekker.
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* This file is in the public domain.
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*/
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#ifndef __WINE_FLOAT_H
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#define __WINE_FLOAT_H
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#ifndef __WINE_USE_MSVCRT
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#define __WINE_USE_MSVCRT
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#endif
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#ifndef MSVCRT
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# ifdef USE_MSVCRT_PREFIX
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# define MSVCRT(x) MSVCRT_##x
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# else
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# define MSVCRT(x) x
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# endif
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* _controlfp masks and bitflags - x86 only so far */
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#ifdef __i386__
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/* Control word masks for unMask */
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#define _MCW_EM 0x0008001F /* Error masks */
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#define _MCW_IC 0x00040000 /* Infinity */
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#define _MCW_RC 0x00000300 /* Rounding */
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#define _MCW_PC 0x00030000 /* Precision */
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/* Control word values for unNew (use with related unMask above) */
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#define _EM_INVALID 0x00000010
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#define _EM_DENORMAL 0x00080000
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#define _EM_ZERODIVIDE 0x00000008
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#define _EM_OVERFLOW 0x00000004
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#define _EM_UNDERFLOW 0x00000002
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#define _EM_INEXACT 0x00000001
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#define _IC_AFFINE 0x00040000
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#define _IC_PROJECTIVE 0x00000000
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#define _RC_CHOP 0x00000300
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#define _RC_UP 0x00000200
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#define _RC_DOWN 0x00000100
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#define _RC_NEAR 0x00000000
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#define _PC_24 0x00020000
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#define _PC_53 0x00010000
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#define _PC_64 0x00000000
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#endif
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/* _statusfp bit flags */
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#define _SW_INEXACT 0x00000001 /* inexact (precision) */
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#define _SW_UNDERFLOW 0x00000002 /* underflow */
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#define _SW_OVERFLOW 0x00000004 /* overflow */
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#define _SW_ZERODIVIDE 0x00000008 /* zero divide */
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#define _SW_INVALID 0x00000010 /* invalid */
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#define _SW_UNEMULATED 0x00000040 /* unemulated instruction */
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#define _SW_SQRTNEG 0x00000080 /* square root of a neg number */
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#define _SW_STACKOVERFLOW 0x00000200 /* FP stack overflow */
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#define _SW_STACKUNDERFLOW 0x00000400 /* FP stack underflow */
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#define _SW_DENORMAL 0x00080000 /* denormal status bit */
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/* fpclass constants */
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#define _FPCLASS_SNAN 0x0001 /* Signaling "Not a Number" */
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#define _FPCLASS_QNAN 0x0002 /* Quiet "Not a Number" */
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#define _FPCLASS_NINF 0x0004 /* Negative Infinity */
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#define _FPCLASS_NN 0x0008 /* Negative Normal */
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#define _FPCLASS_ND 0x0010 /* Negative Denormal */
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#define _FPCLASS_NZ 0x0020 /* Negative Zero */
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#define _FPCLASS_PZ 0x0040 /* Positive Zero */
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#define _FPCLASS_PD 0x0080 /* Positive Denormal */
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#define _FPCLASS_PN 0x0100 /* Positive Normal */
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#define _FPCLASS_PINF 0x0200 /* Positive Infinity */
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double _copysign (double, double);
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double _chgsign (double);
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double _scalb(double, long);
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double _logb(double);
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double _nextafter(double, double);
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int _finite(double);
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int _isnan(double);
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int _fpclass(double);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __WINE_FLOAT_H */
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