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authorAndrew Hsieh <andrewhsieh@google.com>2012-11-08 09:43:39 -0800
committerAndrew Hsieh <andrewhsieh@google.com>2012-11-08 09:43:39 -0800
commit3c56f697e112c79fb5457538fdc373e348beca24 (patch)
tree91987aa2182421ebead7f3bc3e14ae0effd4ba88 /gcc-4.2.1-5666.3/libgomp/testsuite/libgomp.c/omp_workshare4.c
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Initial checkin of unmodified gcc-5666.3.tar.gz
This is the source to build gcc-4.2 for MacOSX gcc version 4.2.1 (Apple Inc. build 5666) (dot 3) http://opensource.apple.com/tarballs/gcc/gcc-5666.3.tar.gz Change-Id: I69540223f018e9d07f861fca04bd3833fc138f8b
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+/******************************************************************************
+* OpenMP Example - Combined Parallel Loop Work-sharing - C/C++ Version
+* FILE: omp_workshare4.c
+* DESCRIPTION:
+* This is a corrected version of the omp_workshare3.c example. Corrections
+* include removing all statements between the parallel for construct and
+* the actual for loop, and introducing logic to preserve the ability to
+* query a thread's id and print it from inside the for loop.
+* SOURCE: Blaise Barney 5/99
+* LAST REVISED: 03/03/2002
+******************************************************************************/
+
+#include <omp.h>
+#include <stdio.h>
+#define N 50
+#define CHUNKSIZE 5
+
+main () {
+
+int i, chunk, tid;
+float a[N], b[N], c[N];
+char first_time;
+
+/* Some initializations */
+for (i=0; i < N; i++)
+ a[i] = b[i] = i * 1.0;
+chunk = CHUNKSIZE;
+first_time = 'y';
+
+#pragma omp parallel for \
+ shared(a,b,c,chunk) \
+ private(i,tid) \
+ schedule(static,chunk) \
+ firstprivate(first_time)
+
+ for (i=0; i < N; i++)
+ {
+ if (first_time == 'y')
+ {
+ tid = omp_get_thread_num();
+ first_time = 'n';
+ }
+ c[i] = a[i] + b[i];
+ printf("tid= %d i= %d c[i]= %f\n", tid, i, c[i]);
+ }
+
+ return 0;
+}