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+// RUN: %libomp-compile-and-run
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include "omp_testsuite.h"
+
+#define DOUBLE_DIGITS 20 /* dt^DOUBLE_DIGITS */
+#define MAX_FACTOR 10
+#define KNOWN_PRODUCT 3628800 /* 10! */
+
+int test_omp_for_reduction ()
+{
+ double dt;
+ int sum;
+ int diff;
+ int product = 1;
+ double dsum;
+ double dknown_sum;
+ double ddiff;
+ int logic_and;
+ int logic_or;
+ int bit_and;
+ int bit_or;
+ int exclusiv_bit_or;
+ int *logics;
+ int i;
+ int known_sum;
+ int known_product;
+ double rounding_error = 1.E-9; /* over all rounding error to be
+ ignored in the double tests */
+ double dpt;
+ int result = 0;
+ int logicsArray[LOOPCOUNT];
+
+ /* Variables for integer tests */
+ sum = 0;
+ product = 1;
+ known_sum = (LOOPCOUNT * (LOOPCOUNT + 1)) / 2;
+ /* variabels for double tests */
+ dt = 1. / 3.; /* base of geometric row for + and - test*/
+ dsum = 0.;
+ /* Variabeles for logic tests */
+ logics = logicsArray;
+ logic_and = 1;
+ logic_or = 0;
+ /* Variabeles for bit operators tests */
+ bit_and = 1;
+ bit_or = 0;
+ /* Variables for exclusiv bit or */
+ exclusiv_bit_or = 0;
+
+ /************************************************************************/
+ /** Tests for integers **/
+ /************************************************************************/
+
+ /**** Testing integer addition ****/
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(+:sum)
+ for (j = 1; j <= LOOPCOUNT; j++) {
+ sum = sum + j;
+ }
+ }
+ if (known_sum != sum) {
+ result++;
+ fprintf (stderr, "Error in sum with integers: Result was %d"
+ " instead of %d.\n", sum, known_sum);
+ }
+
+ /**** Testing integer subtracton ****/
+ diff = (LOOPCOUNT * (LOOPCOUNT + 1)) / 2;
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(-:diff)
+ for (j = 1; j <= LOOPCOUNT; j++) {
+ diff = diff - j;
+ }
+ }
+ if (diff != 0) {
+ result++;
+ fprintf (stderr, "Error in difference with integers: Result was %d"
+ " instead of 0.\n", diff);
+ }
+
+ /**** Testing integer multiplication ****/
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(*:product)
+ for (j = 1; j <= MAX_FACTOR; j++) {
+ product *= j;
+ }
+ }
+ known_product = KNOWN_PRODUCT;
+ if(known_product != product) {
+ result++;
+ fprintf (stderr,"Error in Product with integers: Result was %d"
+ " instead of %d\n",product,known_product);
+ }
+
+ /************************************************************************/
+ /** Tests for doubles **/
+ /************************************************************************/
+
+ /**** Testing double addition ****/
+ dsum = 0.;
+ dpt = 1.;
+ for (i = 0; i < DOUBLE_DIGITS; ++i) {
+ dpt *= dt;
+ }
+ dknown_sum = (1 - dpt) / (1 - dt);
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(+:dsum)
+ for (j = 0; j < DOUBLE_DIGITS; j++) {
+ dsum += pow (dt, j);
+ }
+ }
+ if (fabs (dsum - dknown_sum) > rounding_error) {
+ result++;
+ fprintf (stderr, "\nError in sum with doubles: Result was %f"
+ " instead of: %f (Difference: %E)\n",
+ dsum, dknown_sum, dsum-dknown_sum);
+ }
+
+ /**** Testing double subtraction ****/
+ ddiff = (1 - dpt) / (1 - dt);
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(-:ddiff)
+ for (j = 0; j < DOUBLE_DIGITS; ++j) {
+ ddiff -= pow (dt, j);
+ }
+ }
+ if (fabs (ddiff) > rounding_error) {
+ result++;
+ fprintf (stderr, "Error in Difference with doubles: Result was %E"
+ " instead of 0.0\n", ddiff);
+ }
+
+
+ /************************************************************************/
+ /** Tests for logical values **/
+ /************************************************************************/
+
+ /**** Testing logic and ****/
+ for (i = 0; i < LOOPCOUNT; i++) {
+ logics[i] = 1;
+ }
+
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(&&:logic_and)
+ for (j = 0; j < LOOPCOUNT; ++j) {
+ logic_and = (logic_and && logics[j]);
+ }
+ }
+ if(!logic_and) {
+ result++;
+ fprintf (stderr, "Error in logic AND part 1\n");
+ }
+
+ logic_and = 1;
+ logics[LOOPCOUNT / 2] = 0;
+
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(&&:logic_and)
+ for (j = 0; j < LOOPCOUNT; ++j) {
+ logic_and = logic_and && logics[j];
+ }
+ }
+ if(logic_and) {
+ result++;
+ fprintf (stderr, "Error in logic AND part 2\n");
+ }
+
+ /**** Testing logic or ****/
+ for (i = 0; i < LOOPCOUNT; i++) {
+ logics[i] = 0;
+ }
+
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(||:logic_or)
+ for (j = 0; j < LOOPCOUNT; ++j) {
+ logic_or = logic_or || logics[j];
+ }
+ }
+ if (logic_or) {
+ result++;
+ fprintf (stderr, "Error in logic OR part 1\n");
+ }
+
+ logic_or = 0;
+ logics[LOOPCOUNT / 2] = 1;
+
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(||:logic_or)
+ for (j = 0; j < LOOPCOUNT; ++j) {
+ logic_or = logic_or || logics[j];
+ }
+ }
+ if(!logic_or) {
+ result++;
+ fprintf (stderr, "Error in logic OR part 2\n");
+ }
+
+ /************************************************************************/
+ /** Tests for bit values **/
+ /************************************************************************/
+
+ /**** Testing bit and ****/
+ for (i = 0; i < LOOPCOUNT; ++i) {
+ logics[i] = 1;
+ }
+
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(&:bit_and)
+ for (j = 0; j < LOOPCOUNT; ++j) {
+ bit_and = (bit_and & logics[j]);
+ }
+ }
+ if (!bit_and) {
+ result++;
+ fprintf (stderr, "Error in BIT AND part 1\n");
+ }
+
+ bit_and = 1;
+ logics[LOOPCOUNT / 2] = 0;
+
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(&:bit_and)
+ for (j = 0; j < LOOPCOUNT; ++j) {
+ bit_and = bit_and & logics[j];
+ }
+ }
+ if (bit_and) {
+ result++;
+ fprintf (stderr, "Error in BIT AND part 2\n");
+ }
+
+ /**** Testing bit or ****/
+ for (i = 0; i < LOOPCOUNT; i++) {
+ logics[i] = 0;
+ }
+
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(|:bit_or)
+ for (j = 0; j < LOOPCOUNT; ++j) {
+ bit_or = bit_or | logics[j];
+ }
+ }
+ if (bit_or) {
+ result++;
+ fprintf (stderr, "Error in BIT OR part 1\n");
+ }
+
+ bit_or = 0;
+ logics[LOOPCOUNT / 2] = 1;
+
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(|:bit_or)
+ for (j = 0; j < LOOPCOUNT; ++j) {
+ bit_or = bit_or | logics[j];
+ }
+ }
+ if (!bit_or) {
+ result++;
+ fprintf (stderr, "Error in BIT OR part 2\n");
+ }
+
+ /**** Testing exclusive bit or ****/
+ for (i = 0; i < LOOPCOUNT; i++) {
+ logics[i] = 0;
+ }
+
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(^:exclusiv_bit_or)
+ for (j = 0; j < LOOPCOUNT; ++j) {
+ exclusiv_bit_or = exclusiv_bit_or ^ logics[j];
+ }
+ }
+ if (exclusiv_bit_or) {
+ result++;
+ fprintf (stderr, "Error in EXCLUSIV BIT OR part 1\n");
+ }
+
+ exclusiv_bit_or = 0;
+ logics[LOOPCOUNT / 2] = 1;
+
+ #pragma omp parallel
+ {
+ int j;
+ #pragma omp for schedule(dynamic,1) reduction(^:exclusiv_bit_or)
+ for (j = 0; j < LOOPCOUNT; ++j) {
+ exclusiv_bit_or = exclusiv_bit_or ^ logics[j];
+ }
+ }
+ if (!exclusiv_bit_or) {
+ result++;
+ fprintf (stderr, "Error in EXCLUSIV BIT OR part 2\n");
+ }
+
+ return (result == 0);
+ free (logics);
+}
+
+int main()
+{
+ int i;
+ int num_failed=0;
+
+ for(i = 0; i < REPETITIONS; i++) {
+ if(!test_omp_for_reduction()) {
+ num_failed++;
+ }
+ }
+ return num_failed;
+}