Retro68/gcc/newlib/libm/machine/spu/headers/ldexpf4.h
2012-03-27 01:51:53 +02:00

73 lines
3.6 KiB
C

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#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__ */