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Description: Random number generation for common lisp
Homepage: http://code.google.com/p/cl-randist/
Clone URL: git://github.com/lvaruzza/cl-randist.git
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Add documentation in random-chi-square
lvaruzza (author)
Sat Feb 23 20:34:24 -0800 2008
commit  48f06320bb46539104d2ebd5ebd4b88bb58ccbc8
tree    6ffeae7dec7e41d13077c55469c0bdf69cb48690
parent  8265ea59c0a955a1916c4e751f1b503510082a14
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chisq.lisp 
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@@ -20,5 +20,9 @@
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    (inline random-chi-square))
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 (defun random-chi-square (nu)
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+  "Generate random variable for chi square distribution:
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+
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+p(x) dx = (1/(2*Gamma(nu/2))) (x/2)^(nu/2 - 1) exp(-x/2) dx"
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+  
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   (declare (type double-float nu))
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   (* 2d0 (random-gamma (/ nu 2d0))))

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