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! { dg-do run }
! testcase from PR 19032 adapted for testsuite
! Our implementation of modulo was wrong for P = 1 and P = -1,
! both in the real and the integer case
program main
integer, parameter :: n=16
real, dimension(n) :: ar, br, modulo_result, floor_result
integer, dimension(n) :: ai, bi , imodulo_result, ifloor_result
ai(1:4) = 5
ai(5:8) = -5
ai(9:12) = 1
ai(13:16) = -1
bi(1:4) = (/ 3,-3, 1, -1/)
bi(5:8) = bi(1:4)
bi(9:12) = bi(1:4)
bi(13:16) = bi(1:4)
ar = ai
br = bi
modulo_result = modulo(ar,br)
imodulo_result = modulo(ai,bi)
floor_result = ar-floor(ar/br)*br
ifloor_result = nint(real(ai-floor(real(ai)/real(bi))*bi))
do i=1,n
if (modulo_result(i) /= floor_result(i) ) then
! print "(A,4F5.0)" ,"real case failed: ", &
! ar(i),br(i), modulo_result(i), floor_result(i)
call abort()
end if
if (imodulo_result(i) /= ifloor_result(i)) then
! print "(A,4I5)", "int case failed: ", &
! ai(i), bi(i), imodulo_result(i), ifloor_result(i)
call abort ()
end if
end do
end program main
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