| // RUN: %libomp-compile-and-run |
| #include <stdio.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_parallel_reduction() |
| { |
| 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; |
| int diff; |
| double ddiff; |
| int product; |
| int known_product; |
| 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; |
| |
| 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; |
| |
| /* Tests for integers */ |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(+:sum) |
| for (i=1;i<=LOOPCOUNT;i++) { |
| sum=sum+i; |
| } |
| |
| if(known_sum!=sum) { |
| result++; |
| fprintf(stderr,"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) reduction(-:diff) |
| for (i=1;i<=LOOPCOUNT;++i) { |
| diff=diff-i; |
| } |
| |
| if(diff != 0) { |
| result++; |
| fprintf(stderr,"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) reduction(+:dsum) |
| for (i=0;i<DOUBLE_DIGITS;++i) { |
| dsum += pow(dt,i); |
| } |
| |
| if( fabs(dsum-dknown_sum) > rounding_error ) { |
| result++; |
| fprintf(stderr,"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(stderr,"\n"); |
| ddiff = (1-dpt)/(1-dt); |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(-:ddiff) |
| for (i=0;i<DOUBLE_DIGITS;++i) { |
| ddiff -= pow(dt,i); |
| } |
| if( fabs(ddiff) > rounding_error) { |
| result++; |
| fprintf(stderr,"Error in Difference with doubles: Result was %E instead of 0.0\n",ddiff); |
| } |
| |
| /* Tests for product of integers */ |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(*:product) |
| for(i=1;i<=MAX_FACTOR;i++) { |
| product *= i; |
| } |
| |
| known_product = KNOWN_PRODUCT; |
| if(known_product != product) { |
| result++; |
| fprintf(stderr,"Error in Product with integers: Result was %d instead of %d\n\n",product,known_product); |
| } |
| |
| /* Tests for logical and */ |
| for(i=0;i<LOOPCOUNT;i++) { |
| logics[i]=1; |
| } |
| |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(&&:logic_and) |
| for(i=0;i<LOOPCOUNT;++i) { |
| logic_and = (logic_and && logics[i]); |
| } |
| if(!logic_and) { |
| result++; |
| fprintf(stderr,"Error in logic AND part 1.\n"); |
| } |
| |
| logic_and = 1; |
| logics[LOOPCOUNT/2]=0; |
| |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(&&:logic_and) |
| for(i=0;i<LOOPCOUNT;++i) { |
| logic_and = logic_and && logics[i]; |
| } |
| if(logic_and) { |
| result++; |
| fprintf(stderr,"Error in logic AND part 2.\n"); |
| } |
| |
| /* Tests for logical or */ |
| for(i=0;i<LOOPCOUNT;i++) { |
| logics[i]=0; |
| } |
| |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(||:logic_or) |
| for(i=0;i<LOOPCOUNT;++i) { |
| logic_or = logic_or || logics[i]; |
| } |
| if(logic_or) { |
| result++; |
| fprintf(stderr,"Error in logic OR part 1.\n"); |
| } |
| logic_or = 0; |
| logics[LOOPCOUNT/2]=1; |
| |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(||:logic_or) |
| for(i=0;i<LOOPCOUNT;++i) { |
| logic_or = logic_or || logics[i]; |
| } |
| if(!logic_or) { |
| result++; |
| fprintf(stderr,"Error in logic OR part 2.\n"); |
| } |
| |
| /* Tests for bitwise and */ |
| for(i=0;i<LOOPCOUNT;++i) { |
| logics[i]=1; |
| } |
| |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(&:bit_and) |
| for(i=0;i<LOOPCOUNT;++i) { |
| bit_and = (bit_and & logics[i]); |
| } |
| if(!bit_and) { |
| result++; |
| fprintf(stderr,"Error in BIT AND part 1.\n"); |
| } |
| |
| bit_and = 1; |
| logics[LOOPCOUNT/2]=0; |
| |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(&:bit_and) |
| for(i=0;i<LOOPCOUNT;++i) { |
| bit_and = bit_and & logics[i]; |
| } |
| if(bit_and) { |
| result++; |
| fprintf(stderr,"Error in BIT AND part 2.\n"); |
| } |
| |
| for(i=0;i<LOOPCOUNT;i++) { |
| logics[i]=0; |
| } |
| |
| /* Tests for bitwise or */ |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(|:bit_or) |
| for(i=0;i<LOOPCOUNT;++i) { |
| bit_or = bit_or | logics[i]; |
| } |
| if(bit_or) { |
| result++; |
| fprintf(stderr,"Error in BIT OR part 1\n"); |
| } |
| bit_or = 0; |
| logics[LOOPCOUNT/2]=1; |
| |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(|:bit_or) |
| for(i=0;i<LOOPCOUNT;++i) { |
| bit_or = bit_or | logics[i]; |
| } |
| if(!bit_or) { |
| result++; |
| fprintf(stderr,"Error in BIT OR part 2\n"); |
| } |
| |
| for(i=0;i<LOOPCOUNT;i++) { |
| logics[i]=0; |
| } |
| |
| /* Tests for bitwise xor */ |
| #pragma omp parallel for schedule(dynamic,1) private(i) reduction(^:exclusiv_bit_or) |
| for(i=0;i<LOOPCOUNT;++i) { |
| exclusiv_bit_or = exclusiv_bit_or ^ logics[i]; |
| } |
| 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 for schedule(dynamic,1) private(i) reduction(^:exclusiv_bit_or) |
| for(i=0;i<LOOPCOUNT;++i) { |
| exclusiv_bit_or = exclusiv_bit_or ^ logics[i]; |
| } |
| if(!exclusiv_bit_or) { |
| result++; |
| fprintf(stderr,"Error in EXCLUSIV BIT OR part 2\n"); |
| } |
| |
| /*printf("\nResult:%d\n",result);*/ |
| return (result==0); |
| } |
| |
| int main() |
| { |
| int i; |
| int num_failed=0; |
| |
| for(i = 0; i < REPETITIONS; i++) { |
| if(!test_omp_parallel_reduction()) { |
| num_failed++; |
| } |
| } |
| return num_failed; |
| } |