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/*
* 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.
*
* Authors: Nathan Binkert
* Ali Saidi
*/
#ifndef __BASE_RANDOM_HH__
#define __BASE_RANDOM_HH__
#include "sim/host.hh"
uint32_t getUInt32();
double getDouble();
double m5random(double r);
uint64_t getUniformPos(uint64_t min, uint64_t max);
int64_t getUniform(int64_t min, int64_t max);
template <typename T>
struct Random;
template<> struct Random<int8_t>
{
static int8_t get()
{ return getUInt32() & (int8_t)-1; }
static int8_t uniform(int8_t min, int8_t max)
{ return getUniform(min, max); }
};
template<> struct Random<uint8_t>
{
static uint8_t get()
{ return getUInt32() & (uint8_t)-1; }
static uint8_t uniform(uint8_t min, uint8_t max)
{ return getUniformPos(min, max); }
};
template<> struct Random<int16_t>
{
static int16_t get()
{ return getUInt32() & (int16_t)-1; }
static int16_t uniform(int16_t min, int16_t max)
{ return getUniform(min, max); }
};
template<> struct Random<uint16_t>
{
static uint16_t get()
{ return getUInt32() & (uint16_t)-1; }
static uint16_t uniform(uint16_t min, uint16_t max)
{ return getUniformPos(min, max); }
};
template<> struct Random<int32_t>
{
static int32_t get()
{ return (int32_t)getUInt32(); }
static int32_t uniform(int32_t min, int32_t max)
{ return getUniform(min, max); }
};
template<> struct Random<uint32_t>
{
static uint32_t get()
{ return (uint32_t)getUInt32(); }
static uint32_t uniform(uint32_t min, uint32_t max)
{ return getUniformPos(min, max); }
};
template<> struct Random<int64_t>
{
static int64_t get()
{ return (int64_t)getUInt32() << 32 || (uint64_t)getUInt32(); }
static int64_t uniform(int64_t min, int64_t max)
{ return getUniform(min, max); }
};
template<> struct Random<uint64_t>
{
static uint64_t get()
{ return (uint64_t)getUInt32() << 32 || (uint64_t)getUInt32(); }
static uint64_t uniform(uint64_t min, uint64_t max)
{ return getUniformPos(min, max); }
};
template<> struct Random<float>
{
static float get()
{ return getDouble(); }
};
template<> struct Random<double>
{
static double get()
{ return getDouble(); }
};
#endif // __BASE_RANDOM_HH__
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