src/numerical/slatec/dbesk0.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 $")
   9
  10 ;;; Using Lisp CMU Common Lisp snapshot-2012-04 (20C Unicode)
  11 ;;;
  12 ;;; Options: ((:prune-labels nil) (:auto-save t) (:relaxed-array-decls t)
  13 ;;;           (:coerce-assigns :as-needed) (:array-type ':simple-array)
  14 ;;;           (:array-slicing nil) (:declare-common nil)
  15 ;;;           (:float-format double-float))
  16
  17 (in-package :slatec)
  18
  19
  20 (let ((ntk0 0)
  21       (xsml 0.0)
  22       (xmax 0.0)
  23       (bk0cs
  24        (make-array 16
  25                    :element-type 'double-float
  26                    :initial-contents '(-0.03532739323390277 0.3442898999246285
  27                                        0.0359799365153615 0.001264615411446926
  28                                        2.286212103119452e-5
  29                                        2.5347910790261494e-7
  30                                        1.904516377220209e-9
  31                                        1.0349695257633625e-11
  32                                        4.2598161427910826e-14
  33                                        1.3744654358807508e-16
  34                                        3.5708965285083736e-19
  35                                        7.631643660116437e-22
  36                                        1.365424988440782e-24
  37                                        2.075275266906668e-27
  38                                        2.7128142180729857e-30
  39                                        3.0825938879146666e-33)))
  40       (first$ nil))
  41   (declare (type (f2cl-lib:integer4) ntk0)
  42            (type (double-float) xsml xmax)
  43            (type (simple-array double-float (16)) bk0cs)
  44            (type f2cl-lib:logical first$))
  45   (setq first$ f2cl-lib:%true%)
  46   (defun dbesk0 (x)
  47     (declare (type (double-float) x))
  48     (prog ((xmaxt 0.0) (y 0.0) (dbesk0 0.0))
  49       (declare (type (double-float) dbesk0 y xmaxt))
  50       (cond
  51         (first$
  52          (setf ntk0
  53                  (initds bk0cs 16
  54                   (* 0.1f0 (f2cl-lib:freal (f2cl-lib:d1mach 3)))))
  55          (setf xsml (f2cl-lib:fsqrt (* 4.0 (f2cl-lib:d1mach 3))))
  56          (setf xmaxt (- (f2cl-lib:flog (f2cl-lib:d1mach 1))))
  57          (setf xmax
  58                  (+ xmaxt
  59                     (/ (* -0.5 xmaxt (f2cl-lib:flog xmaxt)) (+ xmaxt 0.5))))))
  60       (setf first$ f2cl-lib:%false%)
  61       (if (<= x 0.0) (xermsg "SLATEC" "DBESK0" "X IS ZERO OR NEGATIVE" 2 2))
  62       (if (> x 2.0) (go label20))
  63       (setf y 0.0)
  64       (if (> x xsml) (setf y (* x x)))
  65       (setf dbesk0
  66               (+ (- (* (- (f2cl-lib:flog (* 0.5 x))) (dbesi0 x)) 0.25)
  67                  (dcsevl (- (* 0.5 y) 1.0) bk0cs ntk0)))
  68       (go end_label)
  69      label20
  70       (setf dbesk0 0.0)
  71       (if (> x xmax) (xermsg "SLATEC" "DBESK0" "X SO BIG K0 UNDERFLOWS" 1 1))
  72       (if (> x xmax) (go end_label))
  73       (setf dbesk0 (* (exp (- x)) (dbsk0e x)))
  74       (go end_label)
  75      end_label
  76       (return (values dbesk0 nil)))))
  77
  78 (in-package #:cl-user)
  79 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
  80 (eval-when (:load-toplevel :compile-toplevel :execute)
  81   (setf (gethash 'fortran-to-lisp::dbesk0
  82                  fortran-to-lisp::*f2cl-function-info*)
  83           (fortran-to-lisp::make-f2cl-finfo :arg-types '((double-float))
  84                                             :return-values '(nil)
  85                                             :calls '(fortran-to-lisp::dbsk0e
  86                                                      fortran-to-lisp::dcsevl
  87                                                      fortran-to-lisp::dbesi0
  88                                                      fortran-to-lisp::xermsg
  89                                                      fortran-to-lisp::initds
  90                                                      fortran-to-lisp::d1mach))))
  91