random number generators for calc
tino
ttk448 at gmail.com
Fri Nov 30 08:07:02 PST 2012
I've had a look at what Gnumeric offers, and they've done a big job on
random number generation. Comparing with what is available in boost
I've separated the list into rand functions which could be quickly
implemented using boost and those which can't (and would require more
intelligence to implement). Another problem might be that boost 1.44
which is currently used in libreoffice has even fewer distribution
functions implemented.
If there's interest, I'd be happy to work on a patch to implement the
first half of the functions into
core/sal/rtl/source/math.cxx
or maybe random.cxx? However, random.* seems not that well
maintained as there's no random.hxx.
http://www.boost.org/doc/libs/1_52_0/doc/html/boost_random/reference.html#boost_random.reference.distributions
gnumeric rand functions (available in boost)
--------------------------------------------
randbernoulli random variate from a Bernoulli distribution
randbetween a random integer number between and including bottom and
randbinom random variate from a binomial distribution
randcauchy random variate from a Cauchy or Lorentz distribution
randchisq random variate from a Chi-square distribution
randdiscrete random variate from a finite discrete distribution
randexp random variate from an exponential distribution
randfdist random variate from an F distribution
randgamma random variate from a Gamma distribution
randgeom random variate from a geometric distribution
randlognorm random variate from a lognormal distribution
randnegbinom random variate from a negative binomial distribution
randnorm random variate from a normal distribution
randpoisson random variate from a Poisson distribution
randtdist random variate from a Student t distribution
randuniform random variate from the uniform distribution from a to b
randweibull random variate from a Weibull distribution
gnumeric rand functions (not available in boost)
------------------------------------------------
randbeta random variate from a Beta distribution
randexppow random variate from an exponential power distribution
randgumbel random variate from a Gumbel distribution
randhyperg random variate from a hypergeometric distribution
randlandau random variate from the Landau distribution
randlaplace random variate from a Laplace distribution
randlevy random variate from a Levy distribution
randlog random variate from a logarithmic distribution
randlogistic random variate from a logistic distribution
randnormtail random variate from the uppertail of a normal distribution
randpareto random variate from a Pareto distribution
randrayleigh random variate from a Rayleigh distribution
randrayleightail random variate from the tail of a Rayleigh distri
randsnorm random variate from a skew normal distribution
randstdist random variate from a skew t distribution
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