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program test_intrinsic_trailz
implicit none
call test_trailz(0_1,0_2,0_4,0_8,1_1,1_2,1_4,1_8,8_1,8_2,8_4,8_8)
stop
contains
subroutine test_trailz(z1,z2,z4,z8,i1,i2,i4,i8,e1,e2,e4,e8)
integer(kind=1) :: z1, i1, e1
integer(kind=2) :: z2, i2, e2
integer(kind=4) :: z4, i4, e4
integer(kind=8) :: z8, i8, e8
if (trailz(0_1) /= 8) STOP 1
if (trailz(0_2) /= 16) STOP 2
if (trailz(0_4) /= 32) STOP 3
if (trailz(0_8) /= 64) STOP 4
if (trailz(1_1) /= 0) STOP 5
if (trailz(1_2) /= 0) STOP 6
if (trailz(1_4) /= 0) STOP 7
if (trailz(1_8) /= 0) STOP 8
if (trailz(8_1) /= 3) STOP 9
if (trailz(8_2) /= 3) STOP 10
if (trailz(8_4) /= 3) STOP 11
if (trailz(8_8) /= 3) STOP 12
if (trailz(z1) /= 8) STOP 13
if (trailz(z2) /= 16) STOP 14
if (trailz(z4) /= 32) STOP 15
if (trailz(z8) /= 64) STOP 16
if (trailz(i1) /= 0) STOP 17
if (trailz(i2) /= 0) STOP 18
if (trailz(i4) /= 0) STOP 19
if (trailz(i8) /= 0) STOP 20
if (trailz(e1) /= 3) STOP 21
if (trailz(e2) /= 3) STOP 22
if (trailz(e4) /= 3) STOP 23
if (trailz(e8) /= 3) STOP 24
end subroutine test_trailz
end program
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