obvious.cc

#include <iostream>
#include "inst_none.h"

const int matrixSize = 1000;
int a[matrixSize][matrixSize];
int b[matrixSize][matrixSize];
int c[matrixSize][matrixSize];

int main() {

    int i, j, k, jj, kk, r;

    // Initialise the matrices arbitrarily
    for (i = 0; i < matrixSize; i++) {
        for (j = 0; j < matrixSize; j++) {
            b[i][j] = i + j; c[i][j] = i - j; a[i][j] = 0;
        }
    }

    // Work out a = b * c, using an obvious algorithm
    for (i = 0; i < matrixSize; i++) {
        for (j = 0; j < matrixSize; j++) {
            INST_W(a[i][j]) = 0;

            for (k = 0; k < matrixSize; k++) {
                INST_W(a[i][j]) += INST_R(b[i][k]) * INST_R(c[k][j]);
            }
        }
    }

    return 0;
}