src/numerical/slatec/dcsevl.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 $")
   9
  10 ;;; Using Lisp CMU Common Lisp snapshot-2012-04 (20C Unicode)
  11 ;;;
  12 ;;; Options: ((:prune-labels nil) (:auto-save t) (:relaxed-array-decls t)
  13 ;;;           (:coerce-assigns :as-needed) (:array-type ':simple-array)
  14 ;;;           (:array-slicing nil) (:declare-common nil)
  15 ;;;           (:float-format double-float))
  16
  17 (in-package :slatec)
  18
  19
  20 (let ((onepl 0.0) (first$ nil))
  21   (declare (type (double-float) onepl) (type f2cl-lib:logical first$))
  22   (setq first$ f2cl-lib:%true%)
  23   (defun dcsevl (x cs n)
  24     (declare (type (f2cl-lib:integer4) n)
  25              (type (simple-array double-float (*)) cs)
  26              (type (double-float) x))
  27     (prog ((b0 0.0) (b1 0.0) (b2 0.0) (twox 0.0) (dcsevl 0.0) (ni 0) (i 0))
  28       (declare (type (f2cl-lib:integer4) i ni)
  29                (type (double-float) dcsevl twox b2 b1 b0))
  30       (if first$ (setf onepl (+ 1.0 (f2cl-lib:d1mach 4))))
  31       (setf first$ f2cl-lib:%false%)
  32       (if (< n 1) (xermsg "SLATEC" "DCSEVL" "NUMBER OF TERMS  <=  0" 2 2))
  33       (if (> n 1000) (xermsg "SLATEC" "DCSEVL" "NUMBER OF TERMS  >  1000" 3 2))
  34       (if (> (abs x) onepl)
  35           (xermsg "SLATEC" "DCSEVL" "X OUTSIDE THE INTERVAL (-1,+1)" 1 1))
  36       (setf b1 0.0)
  37       (setf b0 0.0)
  38       (setf twox (* 2.0 x))
  39       (f2cl-lib:fdo (i 1 (f2cl-lib:int-add i 1))
  40                     ((> i n) nil)
  41         (tagbody
  42           (setf b2 b1)
  43           (setf b1 b0)
  44           (setf ni (f2cl-lib:int-sub (f2cl-lib:int-add n 1) i))
  45           (setf b0 (+ (- (* twox b1) b2) (f2cl-lib:fref cs (ni) ((1 *)))))
  46          label10))
  47       (setf dcsevl (* 0.5 (- b0 b2)))
  48       (go end_label)
  49      end_label
  50       (return (values dcsevl nil nil nil)))))
  51
  52 (in-package #:cl-user)
  53 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
  54 (eval-when (:load-toplevel :compile-toplevel :execute)
  55   (setf (gethash 'fortran-to-lisp::dcsevl
  56                  fortran-to-lisp::*f2cl-function-info*)
  57           (fortran-to-lisp::make-f2cl-finfo
  58            :arg-types '((double-float) (simple-array double-float (*))
  59                         (fortran-to-lisp::integer4))
  60            :return-values '(nil nil nil)
  61            :calls '(fortran-to-lisp::xermsg fortran-to-lisp::d1mach))))
  62