llvm-project/openmp/testsuite/c/omp_parallel_reduction.c

279 lines
6.5 KiB
C

<ompts:test>
<ompts:testdescription>Test which checks the omp parallel reduction directive with all its options.</ompts:testdescription>
<ompts:ompversion>3.0</ompts:ompversion>
<ompts:directive>omp parallel reduction</ompts:directive>
<ompts:testcode>
#include <stdio.h>
#include <math.h>
#include "omp_testsuite.h"
int <ompts:testcode:functionname>omp_parallel_reduction</ompts:testcode:functionname>(FILE * logFile){
<ompts:orphan:vars>
int sum;
int known_sum;
double dsum;
double dknown_sum;
double dt=0.5; /* base of geometric row for + and - test*/
double rounding_error= 1.E-9;
#define DOUBLE_DIGITS 20 /* dt^DOUBLE_DIGITS */
int diff;
double ddiff;
int product;
int known_product;
#define MAX_FACTOR 10
#define KNOWN_PRODUCT 3628800 /* 10! */
int logic_and;
int logic_or;
int bit_and;
int bit_or;
int exclusiv_bit_or;
int logics[LOOPCOUNT];
int i;
double dpt;
int result;
</ompts:orphan:vars>
sum =0;
dsum=0;
product=1;
logic_and=1;
logic_or=0;
bit_and=1;
bit_or=0;
exclusiv_bit_or=0;
result=0;
dt = 1./3.;
known_sum = (LOOPCOUNT*(LOOPCOUNT+1))/2;
<ompts:orphan>
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(+:sum)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for (i=1;i<=LOOPCOUNT;i++)
{
sum=sum+i;
}
if(known_sum!=sum)
{
result++;
fprintf(logFile,"Error in sum with integers: Result was %d instead of %d\n",sum,known_sum);
}
diff = (LOOPCOUNT*(LOOPCOUNT+1))/2;
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(-:diff)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for (i=1;i<=LOOPCOUNT;++i)
{
diff=diff-i;
}
if(diff != 0)
{
result++;
fprintf(logFile,"Error in difference with integers: Result was %d instead of 0.\n",diff);
}
/* Tests for doubles */
dsum=0;
dpt=1;
for (i=0;i<DOUBLE_DIGITS;++i)
{
dpt*=dt;
}
dknown_sum = (1-dpt)/(1-dt);
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(+:dsum)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for (i=0;i<DOUBLE_DIGITS;++i)
{
dsum += pow(dt,i);
}
if( fabs(dsum-dknown_sum) > rounding_error )
{
result++;
fprintf(logFile,"Error in sum with doubles: Result was %f instead of %f (Difference: %E)\n",dsum,dknown_sum, dsum-dknown_sum);
}
dpt=1;
for (i=0;i<DOUBLE_DIGITS;++i)
{
dpt*=dt;
}
fprintf(logFile,"\n");
ddiff = (1-dpt)/(1-dt);
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(-:ddiff)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for (i=0;i<DOUBLE_DIGITS;++i)
{
ddiff -= pow(dt,i);
}
if( fabs(ddiff) > rounding_error)
{
result++;
fprintf(logFile,"Error in Difference with doubles: Result was %E instead of 0.0\n",ddiff);
}
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(*:product)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=1;i<=MAX_FACTOR;i++)
{
product *= i;
}
known_product = KNOWN_PRODUCT;
if(known_product != product)
{
result++;
fprintf(logFile,"Error in Product with integers: Result was %d instead of %d\n\n",product,known_product);
}
for(i=0;i<LOOPCOUNT;i++)
{
logics[i]=1;
}
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(&&:logic_and)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=0;i<LOOPCOUNT;++i)
{
logic_and = (logic_and && logics[i]);
}
if(!logic_and)
{
result++;
fprintf(logFile,"Error in logic AND part 1.\n");
}
logic_and = 1;
logics[LOOPCOUNT/2]=0;
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(&&:logic_and)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=0;i<LOOPCOUNT;++i)
{
logic_and = logic_and && logics[i];
}
if(logic_and)
{
result++;
fprintf(logFile,"Error in logic AND part 2.\n");
}
for(i=0;i<LOOPCOUNT;i++)
{
logics[i]=0;
}
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(||:logic_or)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=0;i<LOOPCOUNT;++i)
{
logic_or = logic_or || logics[i];
}
if(logic_or)
{
result++;
fprintf(logFile,"Error in logic OR part 1.\n");
}
logic_or = 0;
logics[LOOPCOUNT/2]=1;
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(||:logic_or)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=0;i<LOOPCOUNT;++i)
{
logic_or = logic_or || logics[i];
}
if(!logic_or)
{
result++;
fprintf(logFile,"Error in logic OR part 2.\n");
}
for(i=0;i<LOOPCOUNT;++i)
{
logics[i]=1;
}
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(&:bit_and)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=0;i<LOOPCOUNT;++i)
{
bit_and = (bit_and & logics[i]);
}
if(!bit_and)
{
result++;
fprintf(logFile,"Error in BIT AND part 1.\n");
}
bit_and = 1;
logics[LOOPCOUNT/2]=0;
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(&:bit_and)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=0;i<LOOPCOUNT;++i)
{
bit_and = bit_and & logics[i];
}
if(bit_and)
{
result++;
fprintf(logFile,"Error in BIT AND part 2.\n");
}
for(i=0;i<LOOPCOUNT;i++)
{
logics[i]=0;
}
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(|:bit_or)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=0;i<LOOPCOUNT;++i)
{
bit_or = bit_or | logics[i];
}
if(bit_or)
{
result++;
fprintf(logFile,"Error in BIT OR part 1\n");
}
bit_or = 0;
logics[LOOPCOUNT/2]=1;
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(|:bit_or)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=0;i<LOOPCOUNT;++i)
{
bit_or = bit_or | logics[i];
}
if(!bit_or)
{
result++;
fprintf(logFile,"Error in BIT OR part 2\n");
}
for(i=0;i<LOOPCOUNT;i++)
{
logics[i]=0;
}
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(^:exclusiv_bit_or)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=0;i<LOOPCOUNT;++i)
{
exclusiv_bit_or = exclusiv_bit_or ^ logics[i];
}
if(exclusiv_bit_or)
{
result++;
fprintf(logFile,"Error in EXCLUSIV BIT OR part 1\n");
}
exclusiv_bit_or = 0;
logics[LOOPCOUNT/2]=1;
#pragma omp parallel for schedule(dynamic,1) private(i) <ompts:check>reduction(^:exclusiv_bit_or)</ompts:check><ompts:crosscheck></ompts:crosscheck>
for(i=0;i<LOOPCOUNT;++i)
{
exclusiv_bit_or = exclusiv_bit_or ^ logics[i];
}
if(!exclusiv_bit_or)
{
result++;
fprintf(logFile,"Error in EXCLUSIV BIT OR part 2\n");
}
</ompts:orphan>
/*printf("\nResult:%d\n",result);*/
return (result==0);
}
</ompts:testcode>
</ompts:test>