vrecp - Vector reciprocal 1/x

Math Vector Library
Programming Reference Manual C/C++
Version 1.0 DD-00002-010

11.9 vrecp - Vector reciprocal $1/x$

#include <mvec.h>

void vrecp (int n, double *z, int incz, const double *x, int incx, const double *y, int incy);
void vrecpf(int n, float *z, int incz, const float *x, int incx, const float *y, int incy);

Given input vector $x$ and a result vector $y$ , this function computes

y= 1/x

11.9.1 Parameters

N - INTEGER: ENTRY: Number of elements of $x$ and $y$ .
CONSTRAINT: $n ≥1$ .
Y - ARRAY OF REAL: EXIT: Result vector $y$ .
CONSTRAINT: Must contain $n× incy$ elements.
CONSTRAINT: Must not overlap with array $x$ .
INCY - INTEGER: ENTRY: Stride for the vector $y$ .
CONSTRAINT: $incy> 0$ .
X - ARRAY OF REAL: ENTRY: Input vector $x$ .
CONSTRAINT: Must contain $n× incx$ elements.
CONSTRAINT: Must not overlap with array $y$ .
INCX - INTEGER: ENTRY: Stride for the vector $x$ .
CONSTRAINT: $incx> 0$ .

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