mirror of
https://gitea.osmocom.org/sim-card/simtrace2.git
synced 2026-03-16 21:28:33 +03:00
62 lines
2.3 KiB
C
62 lines
2.3 KiB
C
/* ----------------------------------------------------------------------------
|
|
* ATMEL Microcontroller Software Support
|
|
* ----------------------------------------------------------------------------
|
|
* Copyright (c) 2008, Atmel Corporation
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the disclaimer below.
|
|
*
|
|
* Atmel's name may not be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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 "board.h"
|
|
|
|
/*------------------------------------------------------------------------------
|
|
* Global Variables
|
|
*------------------------------------------------------------------------------*/
|
|
|
|
static uint32_t _dwRandNext=1 ;
|
|
|
|
/*------------------------------------------------------------------------------
|
|
* Exported Functions
|
|
*------------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Initialize the seed for rand generator.
|
|
*
|
|
* \param seed rand initiation seed
|
|
*/
|
|
extern void srand( uint32_t dwSeed )
|
|
{
|
|
_dwRandNext = dwSeed ;
|
|
}
|
|
|
|
/**
|
|
* Return a random number, maxinum assumed to be 65536
|
|
*/
|
|
extern int rand( void )
|
|
{
|
|
_dwRandNext = _dwRandNext * 1103515245 + 12345 ;
|
|
|
|
return (uint32_t)(_dwRandNext/131072) % 65536 ;
|
|
}
|
|
|