workaround for buggy mingw include search order on linux (gvg) Added: trunk/reactos/lib/crt/include/float.h _____
Added: trunk/reactos/lib/crt/include/float.h --- trunk/reactos/lib/crt/include/float.h 2005-02-18 13:07:27 UTC (rev 13630) +++ trunk/reactos/lib/crt/include/float.h 2005-02-18 13:53:21 UTC (rev 13631) @@ -0,0 +1,152 @@
+/* + * float.h + * This file has no copyright assigned and is placed in the Public Domain. + * This file is a part of the mingw-runtime package. + * No warranty is given; refer to the file DISCLAIMER within the package. + * + * Constants related to floating point arithmetic. + * + * Also included here are some non-ANSI bits for accessing the floating + * point controller. + * + * NOTE: GCC provides float.h, but it doesn't include the non-standard + * stuff for accessing the fp controller. We include_next the + * GCC-supplied header and just define the MS-specific extensions + * here. + * + */ + +#include_next<float.h> + +#ifndef _MINGW_FLOAT_H_ +#define _MINGW_FLOAT_H_ + +/* All the headers include this file. */ +#include <_mingw.h> + +/* + * Functions and definitions for controlling the FPU. + */ +#ifndef __STRICT_ANSI__ + +/* TODO: These constants are only valid for x86 machines */ + +/* Control word masks for unMask */ +#define _MCW_EM 0x0008001F /* Error masks */ +#define _MCW_IC 0x00040000 /* Infinity */ +#define _MCW_RC 0x00000300 /* Rounding */ +#define _MCW_PC 0x00030000 /* Precision */ + +/* Control word values for unNew (use with related unMask above) */ +#define _EM_INVALID 0x00000010 +#define _EM_DENORMAL 0x00080000 +#define _EM_ZERODIVIDE 0x00000008 +#define _EM_OVERFLOW 0x00000004 +#define _EM_UNDERFLOW 0x00000002 +#define _EM_INEXACT 0x00000001 +#define _IC_AFFINE 0x00040000 +#define _IC_PROJECTIVE 0x00000000 +#define _RC_CHOP 0x00000300 +#define _RC_UP 0x00000200 +#define _RC_DOWN 0x00000100 +#define _RC_NEAR 0x00000000 +#define _PC_24 0x00020000 +#define _PC_53 0x00010000 +#define _PC_64 0x00000000 + +/* These are also defined in Mingw math.h, needed to work around + GCC build issues. */ +/* Return values for fpclass. */ +#ifndef __MINGW_FPCLASS_DEFINED +#define __MINGW_FPCLASS_DEFINED 1 +#define _FPCLASS_SNAN 0x0001 /* Signaling "Not a Number" */ +#define _FPCLASS_QNAN 0x0002 /* Quiet "Not a Number" */ +#define _FPCLASS_NINF 0x0004 /* Negative Infinity */ +#define _FPCLASS_NN 0x0008 /* Negative Normal */ +#define _FPCLASS_ND 0x0010 /* Negative Denormal */ +#define _FPCLASS_NZ 0x0020 /* Negative Zero */ +#define _FPCLASS_PZ 0x0040 /* Positive Zero */ +#define _FPCLASS_PD 0x0080 /* Positive Denormal */ +#define _FPCLASS_PN 0x0100 /* Positive Normal */ +#define _FPCLASS_PINF 0x0200 /* Positive Infinity */ +#endif /* __MINGW_FPCLASS_DEFINED */ + +/* invalid subconditions (_SW_INVALID also set) */ +#define _SW_UNEMULATED 0x0040 /* unemulated instruction */ +#define _SW_SQRTNEG 0x0080 /* square root of a neg number */ +#define _SW_STACKOVERFLOW 0x0200 /* FP stack overflow */ +#define _SW_STACKUNDERFLOW 0x0400 /* FP stack underflow */ + +/* Floating point error signals and return codes */ +#define _FPE_INVALID 0x81 +#define _FPE_DENORMAL 0x82 +#define _FPE_ZERODIVIDE 0x83 +#define _FPE_OVERFLOW 0x84 +#define _FPE_UNDERFLOW 0x85 +#define _FPE_INEXACT 0x86 +#define _FPE_UNEMULATED 0x87 +#define _FPE_SQRTNEG 0x88 +#define _FPE_STACKOVERFLOW 0x8a +#define _FPE_STACKUNDERFLOW 0x8b +#define _FPE_EXPLICITGEN 0x8c /* raise( SIGFPE ); */ + +#ifndef RC_INVOKED + +#ifdef __cplusplus +extern "C" { +#endif + +/* Set the FPU control word as cw = (cw & ~unMask) | (unNew & unMask), + * i.e. change the bits in unMask to have the values they have in unNew, + * leaving other bits unchanged. */ +_CRTIMP unsigned int __cdecl _controlfp (unsigned int unNew, unsigned int unMask); +_CRTIMP unsigned int __cdecl _control87 (unsigned int unNew, unsigned int unMask); + + +_CRTIMP unsigned int __cdecl _clearfp (void); /* Clear the FPU status word */ +_CRTIMP unsigned int __cdecl _statusfp (void); /* Report the FPU status word */ +#define _clear87 _clearfp +#define _status87 _statusfp + + +/* + MSVCRT.dll _fpreset initializes the control register to 0x27f, + the status register to zero and the tag word to 0FFFFh. + This differs from asm instruction finit/fninit which set control + word to 0x37f (64 bit mantissa precison rather than 53 bit). + By default, the mingw version of _fpreset sets fp control as + per fninit. To use the MSVCRT.dll _fpreset, include CRT_fp8.o when + building your application. +*/ +void __cdecl _fpreset (void); +void __cdecl fpreset (void); + +/* Global 'variable' for the current floating point error code. */ +_CRTIMP int * __cdecl __fpecode(void); +#define _fpecode (*(__fpecode())) + +/* + * IEEE recommended functions. MS puts them in float.h + * but they really belong in math.h. + */ + +_CRTIMP double __cdecl _chgsign (double); +_CRTIMP double __cdecl _copysign (double, double); +_CRTIMP double __cdecl _logb (double); +_CRTIMP double __cdecl _nextafter (double, double); +_CRTIMP double __cdecl _scalb (double, long); + +_CRTIMP int __cdecl _finite (double); +_CRTIMP int __cdecl _fpclass (double); +_CRTIMP int __cdecl _isnan (double); + +#ifdef __cplusplus +} +#endif + +#endif /* Not RC_INVOKED */ + +#endif /* Not __STRICT_ANSI__ */ + +#endif /* _FLOAT_H_ */ +
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