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Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
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dsp/core/c161s.h Normal file
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#ifndef COSMOPOLITAN_DSP_CORE_C161S_H_
#define COSMOPOLITAN_DSP_CORE_C161S_H_
#include "dsp/core/c161.h"
#include "libc/macros.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
forceinline pureconst artificial signed char C161S(signed char al,
signed char bl,
signed char cl) {
short ax, bx, cx;
ax = al;
bx = bl;
cx = cl;
ax *= -1 * EXTRA_SHARP;
bx *= 6 * EXTRA_SHARP;
cx *= -1 * EXTRA_SHARP;
ax += bx;
ax += cx;
ax += 2 * EXTRA_SHARP;
ax /= 4 * EXTRA_SHARP;
al = MIN(112, MAX(-112, ax));
return al;
}
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_DSP_CORE_C161S_H_ */