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39 /* -------------------------------------------------------------- */
40 /* PROLOG END TAG zYx */
41 #ifdef __SPU__
42 #ifndef _LOG10D2_H_
43 #define _LOG10D2_H_ 1
44
45 #include <spu_intrinsics.h>
46
47
48 #include "log2d2.h"
49
50 /*
51 * FUNCTION
52 * vector double _log10d2(vector double x)
53 *
54 * DESCRIPTION
55 * _log10d2 computes log (base 10) for each of the double word
56 * elements the input vector x. log10_v
57 * is computed using log2d2 as follows:
58 *
59 * log10d2(x) = log2d2(x) / log2d2(10);
60 */
_log10d2(vector double x)61 static __inline vector double _log10d2(vector double x)
62 {
63 return (spu_mul(_log2d2(x), spu_splats(0.301029995663981195213)));
64 }
65
66 #endif /* _LOG10D2_H_ */
67 #endif /* __SPU__ */
68
