X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=libgomp%2Ftestsuite%2Flibgomp.c%2Fomp_reduction.c;fp=libgomp%2Ftestsuite%2Flibgomp.c%2Fomp_reduction.c;h=5c9c41ec7491cad9cd9adf6219e54883e0282e4b;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=0000000000000000000000000000000000000000;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/libgomp/testsuite/libgomp.c/omp_reduction.c b/libgomp/testsuite/libgomp.c/omp_reduction.c new file mode 100644 index 00000000..5c9c41ec --- /dev/null +++ b/libgomp/testsuite/libgomp.c/omp_reduction.c @@ -0,0 +1,35 @@ +/****************************************************************************** +* FILE: omp_reduction.c +* DESCRIPTION: +* OpenMP Example - Combined Parallel Loop Reduction - C/C++ Version +* This example demonstrates a sum reduction within a combined parallel loop +* construct. Notice that default data element scoping is assumed - there +* are no clauses specifying shared or private variables. OpenMP will +* automatically make loop index variables private within team threads, and +* global variables shared. +* AUTHOR: Blaise Barney 5/99 +* LAST REVISED: 04/06/05 +******************************************************************************/ +#include +#include +#include + +int main (int argc, char *argv[]) { + +int i, n; +float a[100], b[100], sum; + +/* Some initializations */ +n = 100; +for (i=0; i < n; i++) + a[i] = b[i] = i * 1.0; +sum = 0.0; + +#pragma omp parallel for reduction(+:sum) + for (i=0; i < n; i++) + sum = sum + (a[i] * b[i]); + +printf(" Sum = %f\n",sum); + + return 0; +}