You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
1.4 KiB
69 lines
1.4 KiB
/* cblas_example.c */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "cblas.h"
|
|
|
|
int main ( )
|
|
{
|
|
CBLAS_LAYOUT Layout;
|
|
CBLAS_TRANSPOSE transa;
|
|
|
|
double *a, *x, *y;
|
|
double alpha, beta;
|
|
CBLAS_INT m, n, lda, incx, incy, i;
|
|
|
|
Layout = CblasColMajor;
|
|
transa = CblasNoTrans;
|
|
|
|
m = 4; /* Size of Column ( the number of rows ) */
|
|
n = 4; /* Size of Row ( the number of columns ) */
|
|
lda = 4; /* Leading dimension of 5 * 4 matrix is 5 */
|
|
incx = 1;
|
|
incy = 1;
|
|
alpha = 1;
|
|
beta = 0;
|
|
|
|
a = (double *)malloc(sizeof(double)*m*n);
|
|
x = (double *)malloc(sizeof(double)*n);
|
|
y = (double *)malloc(sizeof(double)*n);
|
|
/* The elements of the first column */
|
|
a[0] = 1;
|
|
a[1] = 2;
|
|
a[2] = 3;
|
|
a[3] = 4;
|
|
/* The elements of the second column */
|
|
a[m] = 1;
|
|
a[m+1] = 1;
|
|
a[m+2] = 1;
|
|
a[m+3] = 1;
|
|
/* The elements of the third column */
|
|
a[m*2] = 3;
|
|
a[m*2+1] = 4;
|
|
a[m*2+2] = 5;
|
|
a[m*2+3] = 6;
|
|
/* The elements of the fourth column */
|
|
a[m*3] = 5;
|
|
a[m*3+1] = 6;
|
|
a[m*3+2] = 7;
|
|
a[m*3+3] = 8;
|
|
/* The elements of x and y */
|
|
x[0] = 1;
|
|
x[1] = 2;
|
|
x[2] = 1;
|
|
x[3] = 1;
|
|
y[0] = 0;
|
|
y[1] = 0;
|
|
y[2] = 0;
|
|
y[3] = 0;
|
|
|
|
cblas_dgemv( Layout, transa, m, n, alpha, a, lda, x, incx, beta,
|
|
y, incy );
|
|
/* Print y */
|
|
for( i = 0; i < n; i++ )
|
|
printf(" y%" CBLAS_IFMT " = %f\n", i, y[i]);
|
|
free(a);
|
|
free(x);
|
|
free(y);
|
|
return 0;
|
|
}
|
|
|