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| -rw-r--r-- | fortran90.html.markdown | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/fortran90.html.markdown b/fortran90.html.markdown index 2f2cfdfd..3730f8b0 100644 --- a/fortran90.html.markdown +++ b/fortran90.html.markdown @@ -436,6 +436,36 @@ contains end module fruity + +! ISO Standard Fortran 2008 introduced the DO CONCURRENT construct to allow you +! to express loop-level parallelism + +integer :: i +real :: array(100) + +DO CONCURRENT (i = 1:size(array)) + array(i) = sqrt(i**i) +END DO + + +! Only calls to pure functions are allowed inside the loop and we can declare +! multiple indices: + +integer :: x, y +real :: array(8, 16) + +do concurrent (x = 1:size(array, 1), y = 1:size(array, 2)) + array(x, y) = real(x) +end do + +! loop indices can also declared inside the contruct: + +real :: array(8, 16) + +do concurrent (integer :: x = 1:size(array, 1), y = 1:size(array, 2)) + array(x, y) = real(x) +end do + ``` ### More Resources |