ReactOS 0.4.15-dev-7942-gd23573b
statfp.c
Go to the documentation of this file.
1/*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS system libraries
4 * FILE: lib/sdk/crt/float/i386/statfp.c
5 * PURPOSE: Unknown
6 * PROGRAMER: Unknown
7 * UPDATE HISTORY:
8 * 25/11/05: Added license header
9 */
10
11#include <precomp.h>
12#include "float.h"
13
14//WTF IS HAPPENING WITH float.h !??!?!
15#define _SW_INVALID 0x00000010 /* invalid */
16#define _SW_ZERODIVIDE 0x00000008 /* zero divide */
17#define _SW_UNDERFLOW 0x00000002 /* underflow */
18#define _SW_OVERFLOW 0x00000004 /* overflow */
19#define _SW_INEXACT 0x00000001 /* inexact (precision) */
20#define _SW_DENORMAL 0x00080000 /* denormal status bit */
21
22/**********************************************************************
23 * _statusfp (MSVCRT.@)
24 */
25unsigned int CDECL _statusfp(void)
26{
27 unsigned int retVal = 0;
28 unsigned short fpword;
29
30#ifdef _M_AMD64
31 fpword = _mm_getcsr();
32#elif defined(__GNUC__)
33 __asm__ __volatile__( "fstsw %0" : "=m" (fpword) : );
34#else // _MSC_VER
35 __asm fstsw [fpword];
36#endif
37 if (fpword & 0x1) retVal |= _SW_INVALID;
38 if (fpword & 0x2) retVal |= _SW_DENORMAL;
39 if (fpword & 0x4) retVal |= _SW_ZERODIVIDE;
40 if (fpword & 0x8) retVal |= _SW_OVERFLOW;
41 if (fpword & 0x10) retVal |= _SW_UNDERFLOW;
42 if (fpword & 0x20) retVal |= _SW_INEXACT;
43 return retVal;
44}
CDECL
#define CDECL
Definition: compat.h:29
__asm__
__asm__(".p2align 4, 0x90\n" ".seh_proc __seh2_global_filter_func\n" "__seh2_global_filter_func:\n" "\tpush %rbp\n" "\t.seh_pushreg %rbp\n" "\tsub $32, %rsp\n" "\t.seh_stackalloc 32\n" "\t.seh_endprologue\n" "\tmov %rdx, %rbp\n" "\tjmp *%rax\n" "__seh2_global_filter_func_exit:\n" "\t.p2align 4\n" "\tadd $32, %rsp\n" "\tpop %rbp\n" "\tret\n" "\t.seh_endproc")
_SW_INEXACT
#define _SW_INEXACT
Definition: statfp.c:19
_statusfp
unsigned int CDECL _statusfp(void)
Definition: statfp.c:25
_SW_OVERFLOW
#define _SW_OVERFLOW
Definition: statfp.c:18
_SW_DENORMAL
#define _SW_DENORMAL
Definition: statfp.c:20
_SW_ZERODIVIDE
#define _SW_ZERODIVIDE
Definition: statfp.c:16
_SW_UNDERFLOW
#define _SW_UNDERFLOW
Definition: statfp.c:17
_SW_INVALID
#define _SW_INVALID
Definition: statfp.c:15
_mm_getcsr
unsigned int _mm_getcsr(void)
Definition: xmmintrin.h:535