小编ara*_*ste的帖子

我刚刚开始使用vecLib框架来使程序在Mac OS X 10.7上进行密集的矩阵向量乘法.我做了一个这样简单的程序; 将矩阵a与向量x相乘,并将结果加到向量y上.

#include <vecLib/vectorOps.h>
#include <stdio.h>

float a[8][4] =     // the matrix to be multiplied
{
    {1.0f, 0.0f, 0.0f, 0.0f},
    {0.0f, 1.0f, 0.0f, 0.0f},
    {1.0f, 1.0f, 0.0f, 0.0f},
    {0.0f, 0.0f, 1.0f, 1.0f},
    {1.0f, 0.0f, 1.0f, 0.0f},
    {1.0f, 0.0f, 1.0f, 0.0f},
    {1.0f, 1.0f, 1.0f, 0.0f},
    {0.0f, 0.0f, 0.0f, 1.0f},
};

float x[4] = {1.0f, 2.0f, 4.0f, 8.0f};  // the vector to be multiplied
float y[8] = {0.f, 0.f, 0.f, 0.f,       // the result vector
              0.f, 0.f, 0.f, 0.f}; …