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| 1 | ;; Structures returned by special functions. |
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| 2 | ;; Liam Healy, Mon Jan 1 2007 - 11:35 |
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| 3 | ;; Time-stamp: <2008-02-16 22:45:31EST return-structures.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 | ;;;;**************************************************************************** |
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| 9 | ;;;; Result from special functions |
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| 10 | ;;;;**************************************************************************** |
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| 11 | |
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| 12 | (cffi:defcstruct sf-result |
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| 13 | "Results from special functions with value and error estimate." |
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| 14 | ;; file:///usr/share/doc/gsl-ref-html/gsl-ref_7.html#SEC61 |
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| 15 | (val :double) |
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| 16 | (err :double)) |
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| 17 | |
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| 18 | (cffi:defcstruct sf-result-e10 |
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| 19 | "Results from special functions with value, error estimate |
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| 20 | and a scaling exponent e10, such that the value is val*10^e10." |
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| 21 | ;; file:///usr/share/doc/gsl-ref-html/gsl-ref_7.html#SEC61 |
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| 22 | (val :double) |
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| 23 | (err :double) |
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| 24 | (e10 :int)) |
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| 25 | |
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| 26 | (cffi:defcenum sf-mode |
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| 27 | "Numerical precision modes with which to calculate special functions." |
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| 28 | ;; file:///usr/share/doc/gsl-ref-html/gsl-ref_7.html#SEC62 |
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| 29 | :double-prec |
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| 30 | :single-prec |
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| 31 | :approx-prec) |
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| 32 | |
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| 33 | (defun val (sf-result &optional (type 'sf-result)) |
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| 34 | (cffi:foreign-slot-value sf-result type 'val)) |
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| 35 | |
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| 36 | (defun err (sf-result &optional (type 'sf-result)) |
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| 37 | (cffi:foreign-slot-value sf-result type 'err)) |
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| 38 | |
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| 39 | (defun e10 (sf-result) |
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| 40 | (cffi:foreign-slot-value sf-result 'sf-result-e10 'e10)) |
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| 41 | |
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