2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * Authors: Nathan Binkert
32 #ifndef __BASE_RANDOM_HH__
33 #define __BASE_RANDOM_HH__
35 #include "sim/host.hh"
39 double m5random(double r);
40 uint64_t getUniformPos(uint64_t min, uint64_t max);
41 int64_t getUniform(int64_t min, int64_t max);
46 template<> struct Random<int8_t>
49 { return getLong() & (int8_t)-1; }
51 static int8_t uniform(int8_t min, int8_t max)
52 { return getUniform(min, max); }
55 template<> struct Random<uint8_t>
58 { return getLong() & (uint8_t)-1; }
60 static uint8_t uniform(uint8_t min, uint8_t max)
61 { return getUniformPos(min, max); }
64 template<> struct Random<int16_t>
67 { return getLong() & (int16_t)-1; }
69 static int16_t uniform(int16_t min, int16_t max)
70 { return getUniform(min, max); }
73 template<> struct Random<uint16_t>
76 { return getLong() & (uint16_t)-1; }
78 static uint16_t uniform(uint16_t min, uint16_t max)
79 { return getUniformPos(min, max); }
82 template<> struct Random<int32_t>
85 { return (int32_t)getLong(); }
87 static int32_t uniform(int32_t min, int32_t max)
88 { return getUniform(min, max); }
91 template<> struct Random<uint32_t>
94 { return (uint32_t)getLong(); }
96 static uint32_t uniform(uint32_t min, uint32_t max)
97 { return getUniformPos(min, max); }
100 template<> struct Random<int64_t>
103 { return (int64_t)getLong() << 32 || (uint64_t)getLong(); }
105 static int64_t uniform(int64_t min, int64_t max)
106 { return getUniform(min, max); }
109 template<> struct Random<uint64_t>
111 static uint64_t get()
112 { return (uint64_t)getLong() << 32 || (uint64_t)getLong(); }
114 static uint64_t uniform(uint64_t min, uint64_t max)
115 { return getUniformPos(min, max); }
118 template<> struct Random<float>
121 { return getDouble(); }
124 template<> struct Random<double>
127 { return getDouble(); }
130 #endif // __BASE_RANDOM_HH__