rsqrtd2

NAME

rsqrtd2 - return the reciprocals of the square roots of double elements

Procedure call syntax:

#include <simdmath.h>

vector double rsqrtd2(vector double x);

Link with -lsimdmath

Inline call syntax:

#include <simdmath.h>

#include <rsqrtd2.h>

vector double _rsqrtd2(vector double x);

Parameters
x	input vector

The rsqrtd2 function returns a vector of the reciprocals of the square roots of the corresponding elements of x.

The function rsqrtd2 returns a float vector in which each element is defined as:

the reciprocal of the square root of the corresponding element of x.
When an element of x is less than 0 the result isNaN.
When an element of x is +Inf the result is +0.
When an element of x is 0 the result is Inf with the sign of the corresponding element of x.
When an element of x is NaN the result is NaN.

SPU only

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