isnanf4

NAME

isnanf4 - verify if float elements are not numbers

Procedure call syntax:

#include <simdmath.h>

vector unsigned int isnanf4(vector float x);

Link with -lsimdmath

Inline call syntax:

#include <simdmath.h>

#include <isnanf4.h>

vector unsigned int _isnanf4(vector float x);

Parameters
x	input vector

The isnanf4 function returns a vector in which each element indicates if the corresponding element of x is NaN.

On the SPU single-precision NaN values are not representable. Therefore the function isnanf4 returns 0 for all input.

On the PPU the function isnanf4 returns an unsigned int vector in which each element is defined as:

UINT_MAX	if the element of x is NaN.
0	otherwise.

SPU and PPU

SIMD Math library specification for the Cell Broadband Engine™ Architecture.

Basis

ISO9899 (C99) isnan macros.