File: openmp_21.f90

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program openmp_21
use omp_lib
integer, parameter :: n = 100000
integer :: i
real :: b(n)

call omp_set_num_threads(4)

!$omp parallel shared(b) private(i)
!$omp do
do i = 1, n
  b(i) = 12.91
end do
!$omp end do
!$omp end parallel

print *, b(1), b(n), b(12), b(12841)
if (abs(b(1) - 12.91) > 1e-8) error stop
if (abs(b(n) - 12.91) > 1e-8) error stop
if (abs(b(12) - 12.91) > 1e-8) error stop
if (abs(b(12841) - 12.91) > 1e-8) error stop
end program