src/numerical/slatec/zlog.lisp

   1 ;;; Compiled by f2cl version:
   2 ;;; ("f2cl1.l,v 46c1f6a93b0d 2012/05/03 04:40:28 toy $"
   3 ;;;  "f2cl2.l,v 96616d88fb7e 2008/02/22 22:19:34 rtoy $"
   4 ;;;  "f2cl3.l,v 96616d88fb7e 2008/02/22 22:19:34 rtoy $"
   5 ;;;  "f2cl4.l,v 96616d88fb7e 2008/02/22 22:19:34 rtoy $"
   6 ;;;  "f2cl5.l,v 46c1f6a93b0d 2012/05/03 04:40:28 toy $"
   7 ;;;  "f2cl6.l,v 1d5cbacbb977 2008/08/24 00:56:27 rtoy $"
   8 ;;;  "macros.l,v fceac530ef0c 2011/11/26 04:02:26 toy $")
   9
  10 ;;; Using Lisp CMU Common Lisp snapshot-2012-04 (20C Unicode)
  11 ;;;
  12 ;;; Options: ((:prune-labels nil) (:auto-save t) (:relaxed-array-decls t)
  13 ;;;           (:coerce-assigns :as-needed) (:array-type ':simple-array)
  14 ;;;           (:array-slicing nil) (:declare-common nil)
  15 ;;;           (:float-format double-float))
  16
  17 (in-package :slatec)
  18
  19
  20 (let ((dpi 3.141592653589793) (dhpi 1.5707963267948966))
  21   (declare (type (double-float) dpi dhpi))
  22   (defun zlog (ar ai br bi ierr)
  23     (declare (type (f2cl-lib:integer4) ierr) (type (double-float) bi br ai ar))
  24     (prog ((zm 0.0) (dtheta 0.0))
  25       (declare (type (double-float) dtheta zm))
  26       (setf ierr 0)
  27       (if (= ar 0.0) (go label10))
  28       (if (= ai 0.0) (go label20))
  29       (setf dtheta (f2cl-lib:datan (/ ai ar)))
  30       (if (<= dtheta 0.0) (go label40))
  31       (if (< ar 0.0) (setf dtheta (- dtheta dpi)))
  32       (go label50)
  33      label10
  34       (if (= ai 0.0) (go label60))
  35       (setf bi dhpi)
  36       (setf br (f2cl-lib:flog (abs ai)))
  37       (if (< ai 0.0) (setf bi (- bi)))
  38       (go end_label)
  39      label20
  40       (if (> ar 0.0) (go label30))
  41       (setf br (f2cl-lib:flog (abs ar)))
  42       (setf bi dpi)
  43       (go end_label)
  44      label30
  45       (setf br (f2cl-lib:flog ar))
  46       (setf bi 0.0)
  47       (go end_label)
  48      label40
  49       (if (< ar 0.0) (setf dtheta (+ dtheta dpi)))
  50      label50
  51       (setf zm (coerce (realpart (zabs ar ai)) 'double-float))
  52       (setf br (f2cl-lib:flog zm))
  53       (setf bi dtheta)
  54       (go end_label)
  55      label60
  56       (setf ierr 1)
  57       (go end_label)
  58      end_label
  59       (return (values nil nil br bi ierr)))))
  60
  61 (in-package #:cl-user)
  62 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
  63 (eval-when (:load-toplevel :compile-toplevel :execute)
  64   (setf (gethash 'fortran-to-lisp::zlog fortran-to-lisp::*f2cl-function-info*)
  65           (fortran-to-lisp::make-f2cl-finfo
  66            :arg-types '((double-float) (double-float) (double-float)
  67                         (double-float) (fortran-to-lisp::integer4))
  68            :return-values '(nil nil fortran-to-lisp::br fortran-to-lisp::bi
  69                             fortran-to-lisp::ierr)
  70            :calls '(fortran-to-lisp::zabs))))
  71