Retro68/gcc/newlib/libm/machine/spu/headers/log10d2.h
2012-03-27 01:51:53 +02:00

68 lines
3.3 KiB
C

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/* PROLOG END TAG zYx */
#ifdef __SPU__
#ifndef _LOG10D2_H_
#define _LOG10D2_H_ 1
#include <spu_intrinsics.h>
#include "log2d2.h"
/*
* FUNCTION
* vector double _log10d2(vector double x)
*
* DESCRIPTION
* _log10d2 computes log (base 10) for each of the double word
* elements the input vector x. log10_v
* is computed using log2d2 as follows:
*
* log10d2(x) = log2d2(x) / log2d2(10);
*/
static __inline vector double _log10d2(vector double x)
{
return (spu_mul(_log2d2(x), spu_splats(0.301029995663981195213)));
}
#endif /* _LOG10D2_H_ */
#endif /* __SPU__ */