28 lines
699 B
Matlab
28 lines
699 B
Matlab
function ldens = lpdfgbeta(x,a,b,aa,bb);
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% function ldens = lpdfgbeta(x,a,b,aa,bb);
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% log (generalized) BETA PDF
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%
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% INPUTS
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% x: density evatuated at x
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% a: BETA distribution paramerer
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% b: BETA distribution paramerer
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% aa: lower bound
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% bb: upper bound
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% OUTPUTS
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% ldens: the log (generalized) BETA PDF
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%
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% SPECIAL REQUIREMENTS
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% none
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%
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% part of DYNARE, copyright Dynare Team (2003-2008)
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% Gnu Public License.
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ldens = -betaln(a,b) + (a-1)*log(x-aa) + (b-1)*log(bb-x) - (a+b-1)*log(bb-aa);
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%gammaln(a+b) - gammaln(a) - gammaln(b)
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%betaln(a,b)
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%pause
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% 02/16/04 SA Interval [aa,bb] is the support of the probability density function.
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