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authoraaron <aaron@FreeBSD.org>2006-05-16 01:18:09 +0800
committeraaron <aaron@FreeBSD.org>2006-05-16 01:18:09 +0800
commit651c0650c82f1ee48ebafbf10ed9f09330e229a9 (patch)
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parent508789c2e9e5f492a59b8d9c558b7129f15e8d58 (diff)
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Adding port math/p5-Math-Series, a Perl extension dealing with mathematic series
Approved by: tobez (implicit)
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+Math::Series defines a class for simple mathematic series with a recursive
+definition such as x_(n+1) = 1 / (x_n + 1). Such a recursive definition is
+treated as a sequence whose elements will be added to form a series. You
+can refer to the previous sequence element as well as to the current index
+in the series. Creation of a Math::Series object is described below in the
+paragraph about the constructor.
+
+Math::Series uses Math::Symbolic to parse and modify the recursive
+sequence definitions. That means you specify the sequence as a string
+which is parsed by Math::Symbolic. Alternatively, you can pass the
+constructor a Math::Symbolic tree directly.
+
+Because Math::Series uses Math::Symbolic for its implementation, all
+results will be Math::Symbolic objects which may contain other variables
+than the sequence variable and the iterator variable.
+
+Each Math::Series object is an iterator to iterate over the elements of
+the series starting at the first element (which was specified by the
+starting element, the second argument to the new() constructor). It offers
+facilities to cache all calculated elements and access any element
+directly, though unless the element has been cached in a previous
+calculation, this is just a shortcut for repeated use of the iterator.
+
+Every element in the series may only access its predecessor, not the
+elements before that.
+
+WWW: http://search.cpan.org/dist/Math-Series
+Author: Steffen Mueller <series-module@steffen-mueller.net>