mirror of
https://github.com/Mercury-Language/mercury.git
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e32a34db38
library/uint8.m:
library/uint16.m:
As above.
tests/hard_coded/Mmakefile:
tests/hard_coded/rotate_uint{8,16}.{m,ex}:
Add tests for the new functions.
125 lines
3.4 KiB
Mathematica
125 lines
3.4 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et
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:- module rotate_uint8.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::uo) is cc_multi.
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:- implementation.
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:- import_module exception.
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:- import_module list.
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:- import_module uint8.
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:- import_module string.
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%---------------------------------------------------------------------------%
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main(!IO) :-
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run_test(rotate_left, unchecked_rotate_left, "rotate_left", !IO),
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run_test(rotate_right,unchecked_rotate_right, "rotate_right", !IO).
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%---------------------------------------------------------------------------%
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:- pred run_test((func(uint8, uint) = uint8)::in,
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(func(uint8, uint) = uint8)::in,
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string::in, io::di, io::uo) is cc_multi.
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run_test(CheckedFunc, UncheckedFunc, Desc, !IO) :-
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io.format("*** Test '%s' ***\n\n", [s(Desc)], !IO),
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Ns = numbers,
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Ds = distances,
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list.foldl(run_test_2(CheckedFunc, UncheckedFunc, Desc, Ds), Ns, !IO).
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:- pred run_test_2((func(uint8, uint) = uint8)::in,
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(func(uint8, uint) = uint8)::in, string::in,
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list(uint)::in, uint8::in, io::di, io::uo) is cc_multi.
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run_test_2(CheckedFunc, UncheckedFunc, Desc, Ds, N, !IO) :-
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list.foldl(run_test_3(CheckedFunc, UncheckedFunc, Desc, N), Ds, !IO).
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:- pred run_test_3((func(uint8, uint) = uint8)::in,
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(func(uint8, uint) = uint8)::in, string::in, uint8::in,
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uint::in, io::di, io::uo) is cc_multi.
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run_test_3(CheckedFunc, UncheckedFunc, Desc, N, D, !IO) :-
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do_eval(CheckedFunc, N, D, CheckedResult),
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io.format(" %s(%s, %u) = %s\n",
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[s(Desc), s(to_binary_string_lz(N)), u(D), s(CheckedResult)], !IO),
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do_eval(UncheckedFunc, N, D, UncheckedResult),
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io.format("unchecked_%s(%s, %u) = %s\n",
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[s(Desc), s(to_binary_string_lz(N)), u(D), s(UncheckedResult)], !IO),
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io.nl(!IO).
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:- pred do_eval((func(uint8, uint) = uint8)::in, uint8::in, uint::in,
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string::out) is cc_multi.
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do_eval(Func, N, D, ResultStr) :-
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( try []
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Result0 = Func(N, D)
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then
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ResultStr = to_binary_string_lz(Result0)
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catch_any _ ->
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ResultStr = "<<exception>>"
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).
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%---------------------------------------------------------------------------%
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:- func numbers = list(uint8).
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numbers = [
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1_u8,
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15_u8
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].
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:- func distances = list(uint).
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distances = [
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0_u,
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1_u,
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2_u,
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7_u,
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8_u,
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15_u,
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16_u
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].
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%---------------------------------------------------------------------------%
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:- func to_binary_string_lz(uint8::in) = (string::uo) is det.
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:- pragma foreign_proc("C",
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to_binary_string_lz(U::in) = (S::uo),
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[will_not_call_mercury, promise_pure, thread_safe, will_not_modify_trail],
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"
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int i;
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MR_allocate_aligned_string_msg(S, 8, MR_ALLOC_ID);
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S[8] = '\\0';
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for (i = 7; i >= 0; i--) {
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S[i] = (U & 1) ? '1' : '0';
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U = U >> 1;
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}
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").
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:- pragma foreign_proc("C#",
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to_binary_string_lz(U::in) = (S::uo),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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S = System.Convert.ToString(U, 2).PadLeft(8, '0');
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").
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:- pragma foreign_proc("Java",
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to_binary_string_lz(U::in) = (S::uo),
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[will_not_call_mercury, promise_pure, thread_safe],
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"
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S = java.lang.String.format(""%8s"",
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java.lang.Integer.toBinaryString(U & 0xff)).replace(' ', '0');
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").
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%---------------------------------------------------------------------------%
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:- end_module rotate_uint8.
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%---------------------------------------------------------------------------%
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