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! Program to test the UNPACK intrinsic
program intrinsic_unpack
integer, dimension(3, 3) :: a, b
logical, dimension(3, 3) :: mask;
character(len=50) line1, line2
integer i
mask = reshape ((/.false.,.true.,.false.,.true.,.false.,.false.,&
&.false.,.false.,.true./), (/3, 3/));
a = reshape ((/1, 0, 0, 0, 1, 0, 0, 0, 1/), (/3, 3/));
b = unpack ((/2, 3, 4/), mask, a)
if (any (b .ne. reshape ((/1, 2, 0, 3, 1, 0, 0, 0, 4/), (/3, 3/)))) &
call abort
write (line1,'(10I4)') b
write (line2,'(10I4)') unpack((/2, 3, 4/), mask, a)
if (line1 .ne. line2) call abort
b = -1
b = unpack ((/2, 3, 4/), mask, 0)
if (any (b .ne. reshape ((/0, 2, 0, 3, 0, 0, 0, 0, 4/), (/3, 3/)))) &
call abort
end program
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