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binomialCoefficient.hh
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#ifndef NPSTAT_BINOMIALCOEFFICIENT_HH_
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#define NPSTAT_BINOMIALCOEFFICIENT_HH_
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/*!
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// \file binomialCoefficient.hh
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//
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// \brief Calculate binomial coefficients avoiding overflows
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//
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// Author: I. Volobouev
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//
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// February 2012
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*/
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namespace
npstat
{
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/**
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// This code calculates the binomial coefficient C(N, M) trying to avoid
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// overflows. Throws either std::overflow_error or std::invalid_argument
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// if things go wrong.
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*/
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unsigned
long
binomialCoefficient
(
unsigned
N,
unsigned
M);
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/**
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// Binomial coefficient as a long double. Has much larger dynamic range
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// than the version which returns unsigned long.
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*/
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long
double
ldBinomialCoefficient
(
unsigned
N,
unsigned
M);
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}
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#endif
// NPSTAT_BINOMIALCOEFFICIENT_HH_
npstat
Definition:
AbsArrayProjector.hh:14
npstat::ldBinomialCoefficient
long double ldBinomialCoefficient(unsigned N, unsigned M)
npstat::binomialCoefficient
unsigned long binomialCoefficient(unsigned N, unsigned M)
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