cfa94b5e3806398fb7e6ba01a49657e75c1ab14e
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32 #include "sim/param.hh"
33 #include "base/random.hh"
34 #include "base/trace.hh"
38 class RandomContext
: public ParamContext
41 RandomContext(const string
&_iniSection
)
42 : ::ParamContext(_iniSection
) {}
48 RandomContext
paramContext("random");
51 seed(¶mContext
, "seed", "seed to random number generator", 1);
54 RandomContext::checkParams()
66 getUniform(int64_t maxmin
)
69 r
= (drand48() - 0.500) * 2 * maxmin
;
70 return (int64_t)round(r
);
74 getUniformPos(uint64_t max
)
77 r
= drand48() * 2 * max
;
78 return (uint64_t)round(r
);
82 // idea for generating a double from erand48
94 return ldexp((double) _short
[0], -48) +
95 ldexp((double) _short
[1], -32) +
96 ldexp((double) _short
[2], -16);