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49 lines
1015 B
C
49 lines
1015 B
C
/**
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* Shell commands for mersenne twister
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*
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* Copyright (C) 2013 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*
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* @ingroup shell_commands
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* @{
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* @file sc_mersenne.c
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* @brief initializes the PRNG
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* @author Christian Mehlis <mehlis@inf.fu-berlin.de>
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* @}
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include "hwtimer.h"
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#include "random.h"
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void _mersenne_init(int argc, char **argv)
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{
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int initval;
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if (argc == 1) {
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initval = hwtimer_now();
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printf("PRNG initialized to current time: %d\n", initval);
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}
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else {
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initval = atoi(argv[1]);
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printf("PRNG initialized given value: %d\n", initval);
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}
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genrand_init(initval);
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}
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void _mersenne_get(int argc, char **argv)
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{
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(void) argc;
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(void) argv;
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printf("%" PRIu32 "\n", genrand_uint32());
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}
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