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* Copyright (c) 2004 Mellanox Technologies LTD. All rights reserved.
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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/* set the random number seed */
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RandomMgr::setRandomSeed( int seed ) {
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pthread_mutex_lock( &lock );
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pthread_mutex_unlock( &lock );
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pthread_mutex_unlock( &lock );
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/* get a random floating point number 0.0 - 1.0 */
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pthread_mutex_lock( &lock );
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res = (rand_r( &randomSeed ) * 1.0) / RAND_MAX;
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pthread_mutex_unlock( &lock );
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/* get the singleton pointer */
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RandomMgr *RandMgr() {
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static RandomMgr *pMgr = new RandomMgr();