ubuntu16.04安装openblas

#include <stdlib.h>
#include "cblas.h"

int (){

        int n;                          
        double da;                      /*! double constant */
        double *dx;                     /*! input double array */
        int incx;                        /*! input stride */
        double *dy;                      /*! output double array */
        int incy;                       /*! output stride */

        int i;

        n = 10;
        da = 10;
        dx = (double*)malloc(sizeof(double)*n);
        incx = 1;
        dy = (double*)malloc(sizeof(double)*n);
        incy = 1;

        for(i=0;i<n;i++){
                dx[i] = 9-i;
                dy[i] = i;
                printf("%f ",dy[i]);    //输出原来的dy
        }
        printf("n");

        cblas_daxpy(n, da, dx,incx, dy, incy);  //运行daxpy程序
    //    cblas_dcopy(n, dx,incx, dy, incy);      //运行dcopy程序

        for(i=0;i<n;i++){
            printf("%f ",dy[i]);   //输出计算后的dy
        }
        printf("n");

        return 0;   
}