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https://github.com/Mercury-Language/mercury.git
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48 lines
1.2 KiB
Mathematica
48 lines
1.2 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 sts=4 et ft=mercury
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%---------------------------------------------------------------------------%
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:- module random1.
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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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:- implementation.
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:- import_module int.
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:- import_module list.
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:- import_module random.
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:- import_module random.sfc16.
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:- import_module random.sfc32.
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:- import_module random.sfc64.
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:- import_module string.
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:- import_module uint64.
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main(!IO) :-
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io.write_string("sfc16:\n", !IO),
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make_urandom(sfc16.init, RPsfc16, RSsfc16),
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test(20, RPsfc16, RSsfc16, _, !IO),
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io.write_string("\nsfc32:\n", !IO),
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sfc32.init(RPsfc32, RSsfc32),
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test(20, RPsfc32, RSsfc32, _, !IO),
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io.write_string("\nsfc64:\n", !IO),
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sfc64.init(RPsfc64, RSsfc64),
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test(20, RPsfc64, RSsfc64, _, !IO).
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:- pred test(int::in, P::in, S::di, S::uo, io::di, io::uo) is det
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<= urandom(P, S).
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test(Count, RP, !RS, !IO) :-
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( if Count > 0 then
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random.generate_uint64(RP, N, !RS),
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A = cast_to_int(N >> 32),
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B = cast_to_int(N /\ 0xffffffffu64),
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io.format("%08x%08x\n", [i(A), i(B)], !IO),
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test(Count - 1, RP, !RS, !IO)
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else
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true
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).
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