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# include <stdio.h>
# include <ctime>
# include <stdlib.h>
# define SIZE 1024
// 基础向量加法函数
void vector_add ( float * A , float * B , float * C , int size )
{
for ( int i = 0 ; i < size ; + + i )
{
C [ i ] = A [ i ] + B [ i ] ;
}
}
int main ( )
{
srand ( time ( NULL ) ) ;
// 动态分配内存，并检查是否分配成功
float * A = ( float * ) malloc ( SIZE * sizeof ( float ) ) ;
float * B = ( float * ) malloc ( SIZE * sizeof ( float ) ) ;
float * C = ( float * ) malloc ( SIZE * sizeof ( float ) ) ;
// 随机初始化，
for ( int i = 0 ; i < SIZE ; i + + )
{
A [ i ] = ( float ) ( rand ( ) % 100 ) / 100.0f ;
B [ i ] = ( float ) ( rand ( ) % 100 ) / 100.0f ;
}
clock_t start = clock ( ) ;
vector_add ( A , B , C , SIZE ) ;
clock_t end = clock ( ) ;
// 计算并输出向量加法的时间
double time_spent = double ( end - start ) / CLOCKS_PER_SEC ;
printf ( " 使用基础的向量加法： \n 当SIZE取%d时， ： \n " , SIZE , time_spent ) ;
// 释放动态分配的内存
free ( A ) ; free ( B ) ; free ( C ) ;
}
