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Diffstat (limited to 'base/random.cc')
-rw-r--r-- | base/random.cc | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/base/random.cc b/base/random.cc deleted file mode 100644 index 4aac14101..000000000 --- a/base/random.cc +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Copyright (c) 2003-2005 The Regents of The University of Michigan - * 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 following disclaimer; - * 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; - * neither the name of the copyright holders 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 <cstdlib> -#include <cmath> - -#include "sim/param.hh" -#include "base/random.hh" -#include "base/trace.hh" - -using namespace std; - -class RandomContext : public ParamContext -{ - public: - RandomContext(const string &_iniSection) - : ::ParamContext(_iniSection) {} - ~RandomContext() {} - - void checkParams(); -}; - -RandomContext paramContext("random"); - -Param<unsigned> -seed(¶mContext, "seed", "seed to random number generator", 1); - -void -RandomContext::checkParams() -{ - ::srand48(seed); -} - -long -getLong() -{ - return mrand48(); -} - -int64_t -getUniform(int64_t min, int64_t max) -{ - double r; - r = drand48() * (max-min) + min; - return (int64_t)round(r); -} - -uint64_t -getUniformPos(uint64_t min, uint64_t max) -{ - double r; - r = drand48() * (max-min) + min; - return (uint64_t)round(r); -} - - -// idea for generating a double from erand48 -double -getDouble() -{ - union { - uint32_t _long[2]; - uint16_t _short[4]; - }; - - _long[0] = mrand48(); - _long[1] = mrand48(); - - return ldexp((double) _short[0], -48) + - ldexp((double) _short[1], -32) + - ldexp((double) _short[2], -16); -} |