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https://github.com/Mercury-Language/mercury.git
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50 lines
1.3 KiB
Mathematica
50 lines
1.3 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 random3.
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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_io_random(sfc16.init, Msfc16, !IO),
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test(20, Msfc16, !IO),
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io.write_string("\nsfc32:\n", !IO),
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sfc32.init(Psfc32, Ssfc32),
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make_io_urandom(Psfc32, Ssfc32, Msfc32, !IO),
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test(20, Msfc32, !IO),
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io.write_string("\nsfc64:\n", !IO),
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sfc64.init(Psfc64, Ssfc64),
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make_io_urandom(Psfc64, Ssfc64, Msfc64, !IO),
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test(20, Msfc64, !IO).
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:- pred test(int::in, M::in, io::di, io::uo) is det <= urandom(M, io).
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test(Count, M, !IO) :-
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( if Count > 0 then
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random.generate_uint64(M, N, !IO),
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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, M, !IO)
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else
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true
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).
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