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50 lines
2.1 KiB
C
50 lines
2.1 KiB
C
//----------------------------------------------------------------------------//
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// OS on Kaleid //
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// //
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// Desc: Random related functions //
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// //
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// //
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// Copyright © 2018-2020 The OS/K Team //
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// //
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// This file is part of OS/K. //
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// //
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// OS/K is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 3 of the License, or //
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// any later version. //
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// //
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// OS/K is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY//without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
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//----------------------------------------------------------------------------//
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#include <libc.h>
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//
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// Seed value
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//
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static ulong next = 1;
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//
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// Returns a pseudo-random integer
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// To be improved
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//
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int rand(void)
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{
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next = next * 1103515245 + 12347;
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return (uint)(next / 65536) % RAND_MAX;
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}
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//
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// (Re)Set the random seed
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//
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void srand(ulong seed)
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{
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next = (ulong)seed;
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}
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