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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [libm/] [machine/] [spu/] [headers/] [ldexpf4.h] - Rev 859

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/* --------------------------------------------------------------  */
/* (C)Copyright 2001,2008,                                         */
/* International Business Machines Corporation,                    */
/* Sony Computer Entertainment, Incorporated,                      */
/* Toshiba Corporation,                                            */
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/* PROLOG END TAG zYx                                              */
#ifdef __SPU__
 
#ifndef _LDEXPF4_H_
#define _LDEXPF4_H_	1
 
#include <spu_intrinsics.h>
#include "scalbnf4.h"
 
/*
 * FUNCTION
 *	vector float _ldexpf4(vector float x, vector signed int exp)
 *
 * DESCRIPTION
 *      The _ldexpf4 function returns a vector containing each element of x 
 *      multiplied by 2^exp computed efficiently.  This function is computed 
 *      without the assistance of any floating point operations and as such
 *      does not set any floating point exceptions.
 *
 *  RETURNS 
 *	 - if the exponent of x is 0, then x is either 0 or a subnormal, 
 *         and the result will be returned as 0.
 *       - if the result if underflows, it will be returned as 0.
 *       - if the result overflows, it will be returned as FLT_MAX.
 *
 */
static __inline vector float _ldexpf4(vector float x, vector signed int exp)
{
  return _scalbnf4(x, exp);
}
 
#endif /* _LDEXPF4_H_ */
#endif /* __SPU__ */
 

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