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https://github.com/Mercury-Language/mercury.git
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8f583d15fa
library/integer.m:
As above -- I have upcoming changes that require this.
(There's a bunch places marked XXX UINT that will need
to revisited once more uint support is available.)
tests/Mmakefile:
tests/hard_coded/integer_uint_conv.{m,exp,exp2}:
Add test for the conversions.
101 lines
2.9 KiB
Mathematica
101 lines
2.9 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et wm=0 tw=0
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%---------------------------------------------------------------------------%
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% Test conversion of uints to integers and integers to uints.
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:- module integer_uint_conv.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::uo) is det.
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%---------------------------------------------------------------------------%
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%---------------------------------------------------------------------------%
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:- implementation.
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:- import_module int.
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:- import_module list.
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:- import_module integer.
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:- import_module uint.
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%---------------------------------------------------------------------------%
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main(!IO) :-
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io.write_string("*** Testing uint -> integer conversion ***\n\n", !IO),
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list.foldl(do_to_integer_test, test_uints, !IO),
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io.nl(!IO),
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io.write_string("*** Testing integer -> uint conversion ***\n\n", !IO),
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list.foldl(do_from_integer_test, test_integers, !IO).
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:- pred do_to_integer_test(uint::in, io::di, io::uo) is det.
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do_to_integer_test(U, !IO) :-
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Integer = integer.from_uint(U),
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io.write_string("uint = ", !IO),
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io.write_uint(U, !IO),
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io.write_string(", integer = ", !IO),
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io.print(Integer, !IO),
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io.nl(!IO).
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:- pred do_from_integer_test(integer::in, io::di, io::uo) is det.
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do_from_integer_test(Integer, !IO) :-
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io.write_string("integer = ", !IO),
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io.print(Integer, !IO),
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io.write_string(", uint = ", !IO),
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( if integer.to_uint(Integer, U) then
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io.write_uint(U, !IO)
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else
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io.write_string("<<OUT-OF-RANGE>>", !IO)
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),
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io.nl(!IO).
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:- func test_uints = list(uint).
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test_uints = [
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cast_from_int(0),
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cast_from_int(1),
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cast_from_int(2),
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cast_from_int(4),
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cast_from_int(8),
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cast_from_int(10),
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cast_from_int(16),
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cast_from_int(32),
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cast_from_int(64),
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cast_from_int(16383), % i.e. integer.base - 1
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cast_from_int(16384), % i.e. integer.base
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cast_from_int(16385), % i.e. integer.base + 1,
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cast_from_int(32768),
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cast_from_int(65536),
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cast_from_int(int.max_int),
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cast_from_int(int.max_int) + cast_from_int(1),
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uint.max_uint
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].
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:- func test_integers = list(integer).
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test_integers = [
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det_from_string("-9223372036854775808"),
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det_from_string("-4294967296"),
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det_from_string("-2147483648"),
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det_from_string("-2"),
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det_from_string("-1"),
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det_from_string("0"),
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det_from_string("1"),
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det_from_string("2"),
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det_from_string("16383"),
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det_from_string("16384"),
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det_from_string("16385"),
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det_from_string("1073741824"),
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det_from_string("2147483648"),
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det_from_string("4294967295"),
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det_from_string("4294967296"),
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det_from_string("4294967297"),
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det_from_string("9223372036854775808"),
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det_from_string("18446744073709551615"),
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det_from_string("18446744073709551616")
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].
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