vsmul - Vector scalar multiplication αx

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

11.6 vsmul - Vector scalar multiplication $αx$

#include <mvec.h>

void vsmul (int n, double *y, int incy, const double *x, int incx, double a);
void vsmulf(int n, float *y, int incy, const float *x, int incx, float a);

Given an input vector $x$ and a scalar constant $α$ and a result vector $y$ , this function computes:

y= αx

11.6.1 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: $incx> 0$ .
A - REAL: ENTRY: Scalar constant $α$ .

[next] [prev] [prev-tail] [front] [up]