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| 1 | ;; Dilogarithm |
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| 2 | ;; Liam Healy, Fri Mar 17 2006 - 18:44 |
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| 3 | ;; Time-stamp: <2008-02-16 20:19:55EST dilogarithm.lisp> |
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| 4 | ;; $Id$ |
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| 5 | |
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| 6 | (in-package :gsl) |
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| 7 | |
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| 8 | ;;; dilog merge complex and real |
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| 9 | (defgeneric dilogarithm (x) |
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| 10 | (:documentation ; FDL |
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| 11 | "The dilogarithm.")) |
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| 12 | |
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| 13 | (defmfun dilogarithm ((x float)) |
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| 14 | "gsl_sf_dilog_e" ((x :double) (ret sf-result)) |
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| 15 | :type :method) |
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| 16 | |
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| 17 | (defmfun dilogarithm ((x complex)) |
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| 18 | "gsl_sf_complex_dilog_e" |
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| 19 | (((abs x) :double) ((phase x) :double) (re sf-result) (im sf-result)) |
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| 20 | :type :method |
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| 21 | :return ((complex (val re) (val im)) (complex (err re) (err im)))) |
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| 22 | |
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| 23 | #| |
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| 24 | (make-tests dilogarithm |
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| 25 | (dilogarithm 1.0d0) |
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| 26 | (dilogarithm #c(0.0d0 1.0d0))) |
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| 27 | |# |
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| 28 | |
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| 29 | (LISP-UNIT:DEFINE-TEST DILOGARITHM |
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| 30 | (LISP-UNIT::ASSERT-NUMERICAL-EQUAL |
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| 31 | (LIST 1.6449340668482264d0 7.304974700020789d-16) |
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| 32 | (MULTIPLE-VALUE-LIST (DILOGARITHM 1.0d0))) |
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| 33 | (LISP-UNIT::ASSERT-NUMERICAL-EQUAL |
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| 34 | (LIST #C(-0.20561675835602822d0 0.915965594177219d0) |
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| 35 | #C(2.100180226255977d-15 7.618282373747058d-16)) |
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| 36 | (MULTIPLE-VALUE-LIST (DILOGARITHM #C(0.0d0 1.0d0))))) |
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| 37 | |
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