src/numerical/slatec/dbesi0.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 $")
   9
  10 ;;; Using Lisp CMU Common Lisp snapshot-2012-04 (20C Unicode)
  11 ;;;
  12 ;;; Options: ((:prune-labels nil) (:auto-save t) (:relaxed-array-decls t)
  13 ;;;           (:coerce-assigns :as-needed) (:array-type ':simple-array)
  14 ;;;           (:array-slicing nil) (:declare-common nil)
  15 ;;;           (:float-format double-float))
  16
  17 (in-package :slatec)
  18
  19
  20 (let ((nti0 0)
  21       (xsml 0.0)
  22       (xmax 0.0)
  23       (bi0cs
  24        (make-array 18
  25                    :element-type 'double-float
  26                    :initial-contents '(-0.07660547252839145 1.9273379539938083
  27                                        0.22826445869203013 0.013048914667072904
  28                                        4.3442709008164877e-4
  29                                        9.422657686001934e-6
  30                                        1.434006289510691e-7
  31                                        1.613849069661749e-9
  32                                        1.3966500445356697e-11
  33                                        9.579451725505446e-14
  34                                        5.333981859862503e-16
  35                                        2.4587160884374706e-18
  36                                        9.53568089024877e-21
  37                                        3.154382039721427e-23
  38                                        9.004564101094637e-26
  39                                        2.24064736912367e-28
  40                                        4.9030346032428375e-31
  41                                        9.508172606122666e-34)))
  42       (first$ nil))
  43   (declare (type (f2cl-lib:integer4) nti0)
  44            (type (double-float) xsml xmax)
  45            (type (simple-array double-float (18)) bi0cs)
  46            (type f2cl-lib:logical first$))
  47   (setq first$ f2cl-lib:%true%)
  48   (defun dbesi0 (x)
  49     (declare (type (double-float) x))
  50     (prog ((y 0.0) (dbesi0 0.0))
  51       (declare (type (double-float) dbesi0 y))
  52       (cond
  53         (first$
  54          (setf nti0
  55                  (initds bi0cs 18
  56                   (* 0.1f0 (f2cl-lib:freal (f2cl-lib:d1mach 3)))))
  57          (setf xsml (f2cl-lib:fsqrt (* 4.5 (f2cl-lib:d1mach 3))))
  58          (setf xmax (f2cl-lib:flog (f2cl-lib:d1mach 2)))))
  59       (setf first$ f2cl-lib:%false%)
  60       (setf y (abs x))
  61       (if (> y 3.0) (go label20))
  62       (setf dbesi0 1.0)
  63       (if (> y xsml)
  64           (setf dbesi0 (+ 2.75 (dcsevl (- (/ (* y y) 4.5) 1.0) bi0cs nti0))))
  65       (go end_label)
  66      label20
  67       (if (> y xmax)
  68           (xermsg "SLATEC" "DBESI0" "ABS(X) SO BIG I0 OVERFLOWS" 2 2))
  69       (setf dbesi0 (* (exp y) (dbsi0e x)))
  70       (go end_label)
  71      end_label
  72       (return (values dbesi0 nil)))))
  73
  74 (in-package #:cl-user)
  75 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
  76 (eval-when (:load-toplevel :compile-toplevel :execute)
  77   (setf (gethash 'fortran-to-lisp::dbesi0
  78                  fortran-to-lisp::*f2cl-function-info*)
  79           (fortran-to-lisp::make-f2cl-finfo :arg-types '((double-float))
  80                                             :return-values '(nil)
  81                                             :calls '(fortran-to-lisp::dbsi0e
  82                                                      fortran-to-lisp::xermsg
  83                                                      fortran-to-lisp::dcsevl
  84                                                      fortran-to-lisp::initds
  85                                                      fortran-to-lisp::d1mach))))
  86