functions in gamma.i -
beta
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beta(z,w) returns the beta function gamma(z)gamma(w)/gamma(z+w) | |
SEE ALSO: | ln_gamma, bico |
bico
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bico(n,k) returns the binomial coefficient n!/(k!(n-k)!) as a double. | |
SEE ALSO: | ln_gamma, beta |
erfc_nr
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erfc_nr(x) returns the complementary error function 1-erf with fractional error less than 1.2e-7 everywhere. |
ln_gamma
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ln_gamma(z) returns natural log of the gamma function. Error is less than 1e-13 for real part of z>=1. Use lngamma if you know that all z>=1, or if you don't care much about accuracy for z<1. | |
SEE ALSO: | lngamma, bico, beta |
lngamma
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lngamma(x) returns natural log of the gamma function. Error is less than 1e-13 for real part of x>=1. Use ln_gamma if some x<1. | |
SEE ALSO: | ln_gamma, bico, beta |