1/*
2 * Copyright (c) 2003-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
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;

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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.
27 *
28 * Authors: Nathan Binkert
29 * Ali Saidi
30 */
31
32#ifdef __SUNPRO_CC
33#include <stdlib.h>
34#include <math.h>
35#endif
36
37#include <cstdlib>
38#include <cmath>
39
40#include "base/fenv.hh"
41#include "base/random.hh"
42
43using namespace std;
44
45uint32_t
46getInt32()
47{
48 return mrand48() & 0xffffffff;
49}
50
51double
52getDouble()
53{
54 return drand48();
55}
56
57double
58m5round(double r)
59{
60#if defined(__sun)
61 double val;
62 int oldrnd = m5_fegetround();
63 m5_fesetround(M5_FE_TONEAREST);
64 val = rint(r);
65 m5_fesetround(oldrnd);
66 return val;
67#else
68 return round(r);
69#endif
70}
71
72int64_t
73getUniform(int64_t min, int64_t max)
74{
75 double r;
76 r = drand48() * (max-min) + min;
77
78 return (int64_t)m5round(r);
79}
80
81uint64_t
82getUniformPos(uint64_t min, uint64_t max)
83{
84 double r;
85 r = drand48() * (max-min) + min;
86
87 return (uint64_t)m5round(r);
88}