tbb parallel for

tbb_parallel_for.cpp

//
//  tbb_intro.cpp
//  CplusplusPractice
//
//  Created by masai on 2015/05/31.
//  Copyright (c) 2015年 masai. All rights reserved.
//

#include <iostream>
#include <cmath>
#include <tbb/tbb.h>

double *output;
double *input;

int main(){
    const int size = 20000000;

    output = new double[size];
    input = new double[size];
    
    for(int i = 0; i < size; ++i){
        input[i] = i;
    }
    
    tbb::parallel_for(0, size, 1, [=](int i){
        output[i] = sqrt(sin(input[i]*sin(input[i]) + cos(input[i])*cos(input[i])));
    }
    );
    return 0;
}