random.hh revision 2665
12SN/A/* 21762SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan 32SN/A * All rights reserved. 42SN/A * 52SN/A * Redistribution and use in source and binary forms, with or without 62SN/A * modification, are permitted provided that the following conditions are 72SN/A * met: redistributions of source code must retain the above copyright 82SN/A * notice, this list of conditions and the following disclaimer; 92SN/A * redistributions in binary form must reproduce the above copyright 102SN/A * notice, this list of conditions and the following disclaimer in the 112SN/A * documentation and/or other materials provided with the distribution; 122SN/A * neither the name of the copyright holders nor the names of its 132SN/A * contributors may be used to endorse or promote products derived from 142SN/A * this software without specific prior written permission. 152SN/A * 162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Nathan Binkert 292665Ssaidi@eecs.umich.edu * Ali Saidi 302SN/A */ 312SN/A 321296SN/A#ifndef __BASE_RANDOM_HH__ 331296SN/A#define __BASE_RANDOM_HH__ 342SN/A 3556SN/A#include "sim/host.hh" 362SN/A 372SN/Along getLong(); 382SN/Adouble getDouble(); 391971SN/Auint64_t getUniformPos(uint64_t min, uint64_t max); 401971SN/Aint64_t getUniform(int64_t min, int64_t max); 412SN/A 422SN/Atemplate <typename T> 432SN/Astruct Random; 442SN/A 451354SN/Atemplate<> struct Random<int8_t> 462SN/A{ 472SN/A static int8_t get() 482SN/A { return getLong() & (int8_t)-1; } 491954SN/A 501971SN/A static int8_t uniform(int8_t min, int8_t max) 511971SN/A { return getUniform(min, max); } 522SN/A}; 532SN/A 541354SN/Atemplate<> struct Random<uint8_t> 552SN/A{ 561296SN/A static uint8_t get() 572SN/A { return getLong() & (uint8_t)-1; } 581954SN/A 591971SN/A static uint8_t uniform(uint8_t min, uint8_t max) 601971SN/A { return getUniformPos(min, max); } 612SN/A}; 622SN/A 631354SN/Atemplate<> struct Random<int16_t> 642SN/A{ 651296SN/A static int16_t get() 662SN/A { return getLong() & (int16_t)-1; } 671954SN/A 681971SN/A static int16_t uniform(int16_t min, int16_t max) 691971SN/A { return getUniform(min, max); } 702SN/A}; 712SN/A 721354SN/Atemplate<> struct Random<uint16_t> 732SN/A{ 741296SN/A static uint16_t get() 752SN/A { return getLong() & (uint16_t)-1; } 761954SN/A 771971SN/A static uint16_t uniform(uint16_t min, uint16_t max) 781971SN/A { return getUniformPos(min, max); } 792SN/A}; 802SN/A 811354SN/Atemplate<> struct Random<int32_t> 822SN/A{ 831296SN/A static int32_t get() 842SN/A { return (int32_t)getLong(); } 851954SN/A 861971SN/A static int32_t uniform(int32_t min, int32_t max) 871971SN/A { return getUniform(min, max); } 882SN/A}; 892SN/A 901354SN/Atemplate<> struct Random<uint32_t> 912SN/A{ 921296SN/A static uint32_t get() 932SN/A { return (uint32_t)getLong(); } 941954SN/A 951971SN/A static uint32_t uniform(uint32_t min, uint32_t max) 961971SN/A { return getUniformPos(min, max); } 972SN/A}; 982SN/A 991354SN/Atemplate<> struct Random<int64_t> 1002SN/A{ 1011296SN/A static int64_t get() 1022SN/A { return (int64_t)getLong() << 32 || (uint64_t)getLong(); } 1031954SN/A 1041971SN/A static int64_t uniform(int64_t min, int64_t max) 1051971SN/A { return getUniform(min, max); } 1062SN/A}; 1072SN/A 1081354SN/Atemplate<> struct Random<uint64_t> 1092SN/A{ 1101296SN/A static uint64_t get() 1112SN/A { return (uint64_t)getLong() << 32 || (uint64_t)getLong(); } 1121954SN/A 1131971SN/A static uint64_t uniform(uint64_t min, uint64_t max) 1141971SN/A { return getUniformPos(min, max); } 1152SN/A}; 1162SN/A 1171354SN/Atemplate<> struct Random<float> 1182SN/A{ 1191296SN/A static float get() 1202SN/A { return getDouble(); } 1212SN/A}; 1222SN/A 1231354SN/Atemplate<> struct Random<double> 1242SN/A{ 1251296SN/A static double get() 1262SN/A { return getDouble(); } 1272SN/A}; 1282SN/A 1291296SN/A#endif // __BASE_RANDOM_HH__ 130