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/* (C)Copyright 2006,2007,                                         */
/* International Business Machines Corporation,                    */
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/* PROLOG END TAG zYx                                              */
#ifdef __SPU__
#ifndef _LOGF4_H_
#define _LOGF4_H_	1

#include "log2f4.h"

/*
 * FUNCTION
 *	vector float _logf4(vector float x)
 *
 * DESCRIPTION
 *	The _logf4 function computes the natural log (base e) of the input
 *      vector of values x. logf4 is computed using log2f4 as follows:
 *	
 *	   logf4(x) = log2f4(x) / log2f4(e);
 *
 */
static __inline vector float _logf4(vector float x)
{
  return (spu_mul(_log2f4(x), spu_splats(0.69314718055995f)));
}

#endif /* _LOGF4_H_ */
#endif /* __SPU__ */