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49 lines
953 B
49 lines
953 B
#include <stdio.h>
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#include <stdlib.h>
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#include <ctime>
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#include <iostream>
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#include <ostream>
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#define SIZE 1024
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int main(){
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void matmul(float **A,float **B,float **C,int n);
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int i,j,n;
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float **A=new float*[n];
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float **B=new float*[n];
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float **C=new float*[n];
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for(i=0;i<n;i++){
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A[i]=new float[n];
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B[i]=new float[n];
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C[i]=new float[n];
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}
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for(i=0;i<n;i++){
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for(j=0;j<n;j++){
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A[i][j]=rand()%100;
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B[i][j]=rand()%100;
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}
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}
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clock_t start=clock();
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matmul(A,B,C,SIZE);
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clock_t end=clock();
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std::cout<<"基础稠密矩阵乘法时间："<<double(end-start)/CLOCKS_PER_SEC<<"秒"<<std::endl;
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for(i=0;i<n;i++){
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delete[] A[i];
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delete[] B[i];
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delete[] C[i];
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}
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delete[] A;
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delete[] B;
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delete[] C;
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}
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void matmul(float **A,float **B,float **C,int n){
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int i,j,k;
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for(i=0;i<n;i++){
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for(j=0;j<n;j++){
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C[i][j]=0;
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for(k=0;k<n;k++){
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C[i][j]=C[i][j]+A[i][k]*B[k][j];
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}
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}
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}
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}
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