From 236963e7563be3e3f8220dac7bb4af446928e194 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Mon, 24 Jun 2024 22:55:29 -0400 Subject: Clean out for expt Signed-off-by: Ian Moffett --- lib/libc/src/stdlib/rand.c | 63 ---------------------------------------------- 1 file changed, 63 deletions(-) delete mode 100644 lib/libc/src/stdlib/rand.c (limited to 'lib/libc/src/stdlib/rand.c') diff --git a/lib/libc/src/stdlib/rand.c b/lib/libc/src/stdlib/rand.c deleted file mode 100644 index 8a0899f..0000000 --- a/lib/libc/src/stdlib/rand.c +++ /dev/null @@ -1,63 +0,0 @@ -/* - * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of Hyra nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include - -/* linear feedback shift register - static global variable */ -static unsigned int lfsr = 0; - -/* - * Sets the global LFSR to a provided seed - * - * @seed: Seed that will be used for random number generation - */ -void -srand(unsigned int seed) -{ - lfsr = seed; -} - -/* - * Generates a random number between 0 and RAND_MAX - * - * Returns random number (unsigned int) between 0 and RAND_MAX - */ -unsigned int -rand(void) -{ - unsigned int intResult = 0; - unsigned int bitResult; - for(int i = 0; i < 32; i++) { - bitResult = lfsr % 2; - intResult |= (bitResult << i); - lfsr >>= 1; - lfsr |= ((bitResult ^ (lfsr % 2)) << 31); - } - return intResult; -} -- cgit v1.2.3