share/fftpack5/lisp/fftpack5_factor.lisp

   1 ;;; Compiled by f2cl version:
   2 ;;; ("f2cl1.l,v 95098eb54f13 2013/04/01 00:45:16 toy $"
   3 ;;;  "f2cl2.l,v 95098eb54f13 2013/04/01 00:45:16 toy $"
   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 95098eb54f13 2013/04/01 00:45:16 toy $"
   7 ;;;  "f2cl6.l,v 1d5cbacbb977 2008/08/24 00:56:27 rtoy $"
   8 ;;;  "macros.l,v 1409c1352feb 2013/03/24 20:44:50 toy $")
   9
  10 ;;; Using Lisp CMU Common Lisp snapshot-2020-04 (21D Unicode)
  11 ;;;
  12 ;;; Options: ((:prune-labels nil) (:auto-save t) (:relaxed-array-decls t)
  13 ;;;           (:coerce-assigns :as-needed) (:array-type ':array)
  14 ;;;           (:array-slicing t) (:declare-common nil)
  15 ;;;           (:float-format single-float))
  16
  17 (in-package "FFTPACK5")
  18
  19
  20 (let ((ntryh
  21        (make-array 4
  22                    :element-type 'f2cl-lib:integer4
  23                    :initial-contents '(4 2 3 5))))
  24   (declare (type (array f2cl-lib:integer4 (4)) ntryh))
  25   (defun factor (n nf fac)
  26     (declare (type (array double-float (*)) fac)
  27              (type (f2cl-lib:integer4) nf n))
  28     (f2cl-lib:with-multi-array-data
  29         ((fac double-float fac-%data% fac-%offset%))
  30       (prog ((nr 0) (nq 0) (ntry 0) (j 0) (nl 0))
  31         (declare (type (f2cl-lib:integer4) nl j ntry nq nr))
  32         (setf nl n)
  33         (setf nf 0)
  34         (setf j 0)
  35        label101
  36         (setf j (f2cl-lib:int-add j 1))
  37         (f2cl-lib:arithmetic-if (f2cl-lib:int-sub j 4)
  38                                 (go label102)
  39                                 (go label102)
  40                                 (go label103))
  41        label102
  42         (setf ntry (f2cl-lib:fref ntryh (j) ((1 4))))
  43         (go label104)
  44        label103
  45         (setf ntry (f2cl-lib:int-add ntry 2))
  46        label104
  47         (setf nq (the f2cl-lib:integer4 (truncate nl ntry)))
  48         (setf nr (f2cl-lib:int-sub nl (f2cl-lib:int-mul ntry nq)))
  49         (f2cl-lib:arithmetic-if nr (go label101) (go label105) (go label101))
  50        label105
  51         (setf nf (f2cl-lib:int-add nf 1))
  52         (setf (f2cl-lib:fref fac-%data% (nf) ((1 *)) fac-%offset%)
  53                 (coerce (the f2cl-lib:integer4 ntry) 'double-float))
  54         (setf nl nq)
  55         (if (/= nl 1) (go label104))
  56         (go end_label)
  57        end_label
  58         (return (values nil nf nil))))))
  59
  60 (in-package #:cl-user)
  61 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
  62 (eval-when (:load-toplevel :compile-toplevel :execute)
  63   (setf (gethash 'fortran-to-lisp::factor
  64                  fortran-to-lisp::*f2cl-function-info*)
  65           (fortran-to-lisp::make-f2cl-finfo
  66            :arg-types '((fortran-to-lisp::integer4) (fortran-to-lisp::integer4)
  67                         (array double-float (*)))
  68            :return-values '(nil fortran-to-lisp::nf nil)
  69            :calls 'nil)))
  70