38 lines
854 B
C
38 lines
854 B
C
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#ifndef FPU_MODES_H
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#define FPU_MODES_H
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#ifdef HAVE_FENV_H
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#include <fenv.h>
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#endif
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typedef struct FPUCtl {
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#ifdef HAVE_FENV_H
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fenv_t flt_env;
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#ifdef _WIN32
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int round_mode;
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#endif
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#else
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int state;
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#endif
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#ifdef HAVE_SSE
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int sse_state;
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#endif
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} FPUCtl;
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void SetMixerFPUMode(FPUCtl *ctl);
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void RestoreFPUMode(const FPUCtl *ctl);
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#ifdef __GNUC__
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/* Use an alternate macro set with GCC to avoid accidental continue or break
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* statements within the mixer mode.
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*/
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#define START_MIXER_MODE() __extension__({ FPUCtl _oldMode; SetMixerFPUMode(&_oldMode)
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#define END_MIXER_MODE() RestoreFPUMode(&_oldMode); })
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#else
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#define START_MIXER_MODE() do { FPUCtl _oldMode; SetMixerFPUMode(&_oldMode)
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#define END_MIXER_MODE() RestoreFPUMode(&_oldMode); } while(0)
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#endif
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#define LEAVE_MIXER_MODE() RestoreFPUMode(&_oldMode)
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#endif /* FPU_MODES_H */
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