This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English version of the page.

Note: This page has been translated by MathWorks. Click here to see
To view all translated materials including this page, select Country from the country navigator on the bottom of this page.


Logarithm of beta function


L = betaln(Z,W)


L = betaln(Z,W) computes the natural logarithm of the beta function log(beta(Z,W)), for corresponding elements of arrays Z and W, without computing beta(Z,W). Since the beta function can range over very large or very small values, its logarithm is sometimes more useful.

Z and W must be real and nonnegative. They must be the same size, or either can be scalar.


collapse all

Compute the natural logarithm of the beta function according to the value of X without directly computing the beta function. beta(X,X) results in floating point arithmetic underflow.

X = 510;
ans = -708.8616


betaln(z,w) = gammaln(z)+gammaln(w)-gammaln(z+w)

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

See Also

| |

Introduced before R2006a