42 lines
1005 B
C
42 lines
1005 B
C
#ifndef FPU_MODES_H
|
|
#define FPU_MODES_H
|
|
|
|
#ifdef HAVE_FENV_H
|
|
#include <fenv.h>
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
typedef struct FPUCtl {
|
|
#if defined(__GNUC__) && defined(HAVE_SSE)
|
|
unsigned int sse_state;
|
|
#elif defined(HAVE___CONTROL87_2)
|
|
unsigned int state;
|
|
unsigned int sse_state;
|
|
#elif defined(HAVE__CONTROLFP)
|
|
unsigned int state;
|
|
#endif
|
|
} FPUCtl;
|
|
void SetMixerFPUMode(FPUCtl *ctl);
|
|
void RestoreFPUMode(const FPUCtl *ctl);
|
|
|
|
#ifdef __GNUC__
|
|
/* Use an alternate macro set with GCC to avoid accidental continue or break
|
|
* statements within the mixer mode.
|
|
*/
|
|
#define START_MIXER_MODE() __extension__({ FPUCtl _oldMode; SetMixerFPUMode(&_oldMode)
|
|
#define END_MIXER_MODE() RestoreFPUMode(&_oldMode); })
|
|
#else
|
|
#define START_MIXER_MODE() do { FPUCtl _oldMode; SetMixerFPUMode(&_oldMode)
|
|
#define END_MIXER_MODE() RestoreFPUMode(&_oldMode); } while(0)
|
|
#endif
|
|
#define LEAVE_MIXER_MODE() RestoreFPUMode(&_oldMode)
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
#endif
|
|
|
|
#endif /* FPU_MODES_H */
|