ReactOS  0.4.15-dev-3453-gff89651
fpreset.c
Go to the documentation of this file.
1 /*
2  * COPYRIGHT: See COPYING.LIB in the top level directory
3  * PROJECT: ReactOS system libraries
4  * PURPOSE: Resets FPU state to the default
5  * PROGRAMER: Thomas Faber <thomas.faber@reactos.org>
6  */
7 
8 #include <precomp.h>
9 
10 /*********************************************************************
11  * _fpreset (MSVCRT.@)
12  */
13 void CDECL _fpreset(void)
14 {
15  const unsigned short x86_cw = 0x27f;
16 #ifdef _MSC_VER
17  __asm { fninit }
18  __asm { fldcw [x86_cw] }
19 #else
20  __asm__ __volatile__( "fninit; fldcw %0" : : "m" (x86_cw) );
21 #endif
23  {
24  const unsigned long sse2_cw = 0x1f80;
25 #ifdef _MSC_VER
26  __asm { ldmxcsr [sse2_cw] }
27 #else
28  __asm__ __volatile__( "ldmxcsr %0" : : "m" (sse2_cw) );
29 #endif
30  }
31 }
__asm__("\n\t \ NewInt3Handler:\n\t \ pushl $" STR(REASON_INT3) "\n\t \ // call debugger loop\n\t \ jmp NewInt31Handler\n\t \ ")
void CDECL _fpreset(void)
Definition: fpreset.c:13
BOOL WINAPI IsProcessorFeaturePresent(IN DWORD ProcessorFeature)
Definition: sysinfo.c:168
#define CDECL
Definition: compat.h:29
#define PF_XMMI64_INSTRUCTIONS_AVAILABLE