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45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* FILE: lib/sdk/crt/float/i386/statfp.c
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* PURPOSE: Unknown
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* PROGRAMER: Unknown
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* UPDATE HISTORY:
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* 25/11/05: Added license header
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*/
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#include <precomp.h>
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#include "float.h"
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//WTF IS HAPPENING WITH float.h !??!?!
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#define _SW_INVALID 0x00000010 /* invalid */
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#define _SW_ZERODIVIDE 0x00000008 /* zero divide */
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#define _SW_UNDERFLOW 0x00000002 /* underflow */
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#define _SW_OVERFLOW 0x00000004 /* overflow */
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#define _SW_INEXACT 0x00000001 /* inexact (precision) */
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#define _SW_DENORMAL 0x00080000 /* denormal status bit */
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/**********************************************************************
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* _statusfp (MSVCRT.@)
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*/
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unsigned int CDECL _statusfp(void)
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{
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unsigned int retVal = 0;
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unsigned short fpword;
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#ifdef _M_AMD64
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fpword = _mm_getcsr();
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#elif defined(__GNUC__)
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__asm__ __volatile__( "fstsw %0" : "=m" (fpword) : );
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#else // _MSC_VER
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__asm fstsw [fpword];
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#endif
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if (fpword & 0x1) retVal |= _SW_INVALID;
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if (fpword & 0x2) retVal |= _SW_DENORMAL;
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if (fpword & 0x4) retVal |= _SW_ZERODIVIDE;
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if (fpword & 0x8) retVal |= _SW_OVERFLOW;
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if (fpword & 0x10) retVal |= _SW_UNDERFLOW;
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if (fpword & 0x20) retVal |= _SW_INEXACT;
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return retVal;
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}
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