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Renamed randnormal to randomnormal

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--HG--
branch : math-randobject
This commit is contained in:
Alex Szpakowski
2013-04-15 14:57:20 -03:00
parent 3046981fce
commit d98e2cb40c
8 changed files with 21 additions and 21 deletions
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src/modules/math/RandomGenerator.cpp
+6 -6
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@@ -32,7 +32,7 @@ namespace math
// George Marsaglia, "Xorshift RNGs", Journal of Statistical Software, Vol.8 (Issue 14), 2003
RandomGenerator::RandomGenerator()
: last_randnormal(std::numeric_limits<double>::infinity())
: last_randomnormal(std::numeric_limits<double>::infinity())
{
// because it is too big for some compilers to handle ... if you know what
// i mean
@@ -66,20 +66,20 @@ uint64 RandomGenerator::rand()
}
// Box–Muller transform
double RandomGenerator::randnormal(double stddev)
double RandomGenerator::randomnormal(double stddev)
{
// use cached number if possible
if (last_randnormal != std::numeric_limits<double>::infinity())
if (last_randomnormal != std::numeric_limits<double>::infinity())
{
double r = last_randnormal;
last_randnormal = std::numeric_limits<double>::infinity();
double r = last_randomnormal;
last_randomnormal = std::numeric_limits<double>::infinity();
return r * stddev;
}
double r = sqrt(-2.0 * log(1. - random()));
double phi = 2.0 * LOVE_M_PI * (1. - random());
last_randnormal = r * cos(phi);
last_randomnormal = r * cos(phi);
return r * sin(phi) * stddev;
}