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magistraleinformaticanetworking:spm:spm1213_c_skepu_map
skepu_map.cpp
#include <iostream>
 
#define SKEPU_CUDA
 
#include "skepu/vector.h"
#include "skepu/matrix.h"
#include "skepu/map.h"
 
using namespace std;
 
// definition of functions to be used in the map and reduce
 
UNARY_FUNC(inc,  int, a, return(a+1); )
UNARY_FUNC(dec,  int, a, return(a-1); )
UNARY_FUNC(sq,   int, a, return(a*a); )
BINARY_FUNC(add, int, a, b, return(a+b); )
BINARY_FUNC(sub, int, a, b, return(a-b); )
BINARY_FUNC(mul, int, a, b, return(a*b); )
BINARY_FUNC(div, int, a, b, return(a/b); )
 
#define N 4
 
int main()
{	
  // declare vectors 
  skepu::Vector<float> v0(N);
  skepu::Vector<float> v1(N);
  skepu::Vector<float> v2(N);
 
  // initialize the vector(s) to some meaningful value
  for(int i=0; i<N;i++) {
    v0[i]=i+1;
    v1[i]=-(i+1);
  }
  cout << "Initial array: " << v0 << endl;  
 
  // one input map: forall i compute f(v0[i])
  skepu::Map<sq> sqmap(new sq);
  sqmap(v0,v2);
  cout << "After sqmap:   " << v2 << endl; 
 
  // two input map: forall i compute f(v0[i],v1[i])
  // same as: alpha(f) o zip
  skepu::Map<add> mapzip(new add);
  mapzip(v0,v1,v2);
  cout << "After mapzip:  " << v2 << endl; 
 
  return 0;
}
magistraleinformaticanetworking/spm/spm1213_c_skepu_map.txt · Ultima modifica: 24/04/2013 alle 06:26 (6 anni fa) da Marco Danelutto