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module mod_submodule_06
implicit none
type :: key_type
integer(1), allocatable :: value(:)
end type key_type
interface fnv_1_hash
module function int8_fnv_1( key ) result(hash_code)
integer(1), intent(inout) :: key(:)
integer(4) :: hash_code
end function int8_fnv_1
end interface fnv_1_hash
end module mod_submodule_06
submodule(mod_submodule_06) submod_submodule_06
implicit none
contains
module function int8_fnv_1( key ) result(hash_code)
integer(1), intent(inout) :: key(:)
integer(4) :: hash_code
integer(1), parameter :: array(4) = [1, 2, 3, 4]
integer(4), parameter :: result = 5
hash_code = result
key = array
end function int8_fnv_1
end submodule submod_submodule_06
program submodule_06
use mod_submodule_06
implicit none
integer(4) :: fnv_1_hasher = 1
type(key_type) :: key
integer(1) :: test_object(4)
allocate(key % value(4))
fnv_1_hasher = fnv_1_hash( key % value )
print *, fnv_1_hasher
print *, key % value
if (fnv_1_hasher /= 5) error stop
if (.not. all(key % value == [1, 2, 3, 4])) error stop
call test_fnv_1()
contains
subroutine test_fnv_1()
integer(4) :: hash
hash = fnv_1_hash( test_object )
print *, hash
print *, test_object
if (hash /= 5) error stop
if (.not. all(test_object == [1, 2, 3, 4])) error stop
end subroutine test_fnv_1
end program
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