share/fftpack5/lisp/cfft1b.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 (defun cfft1b (n inc c lenc wsave lensav work lenwrk ier)
  21   (declare (type (array double-float (*)) work wsave)
  22            (type (array f2cl-lib:complex16 (*)) c)
  23            (type (f2cl-lib:integer4) ier lenwrk lensav lenc inc n))
  24   (f2cl-lib:with-multi-array-data
  25       ((c f2cl-lib:complex16 c-%data% c-%offset%)
  26        (wsave double-float wsave-%data% wsave-%offset%)
  27        (work double-float work-%data% work-%offset%))
  28     (prog ((iw1 0))
  29       (declare (type (f2cl-lib:integer4) iw1))
  30       (setf ier 0)
  31       (cond
  32         ((< lenc
  33             (f2cl-lib:int-add
  34              (f2cl-lib:int-mul inc (f2cl-lib:int-add n (f2cl-lib:int-sub 1)))
  35              1))
  36          (setf ier 1)
  37          (xerfft "CFFT1B " 4))
  38         ((< lensav
  39             (f2cl-lib:int-add (f2cl-lib:int-mul 2 n)
  40                               (f2cl-lib:int
  41                                (f2cl-lib:f2cl/
  42                                 (f2cl-lib:flog (f2cl-lib:freal n))
  43                                 (f2cl-lib:flog 2.0d0)))
  44                               4))
  45          (setf ier 2)
  46          (xerfft "CFFT1B " 6))
  47         ((< lenwrk (f2cl-lib:int-mul 2 n))
  48          (setf ier 3)
  49          (xerfft "CFFT1B " 8)))
  50       (if (= n 1) (go end_label))
  51       (setf iw1 (f2cl-lib:int-add n n 1))
  52       (c1fm1b n inc c work wsave
  53        (f2cl-lib:fref wsave-%data% (iw1) ((1 lensav)) wsave-%offset%)
  54        (f2cl-lib:array-slice wsave-%data%
  55                              double-float
  56                              ((+ iw1 1))
  57                              ((1 lensav))
  58                              wsave-%offset%))
  59       (go end_label)
  60      end_label
  61       (return (values nil nil nil nil nil nil nil nil ier)))))
  62
  63 (in-package #:cl-user)
  64 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
  65 (eval-when (:load-toplevel :compile-toplevel :execute)
  66   (setf (gethash 'fortran-to-lisp::cfft1b
  67                  fortran-to-lisp::*f2cl-function-info*)
  68           (fortran-to-lisp::make-f2cl-finfo
  69            :arg-types '((fortran-to-lisp::integer4) (fortran-to-lisp::integer4)
  70                         (array fortran-to-lisp::complex16 (*))
  71                         (fortran-to-lisp::integer4) (array double-float (*))
  72                         (fortran-to-lisp::integer4) (array double-float (*))
  73                         (fortran-to-lisp::integer4)
  74                         (fortran-to-lisp::integer4))
  75            :return-values '(nil nil nil nil nil nil nil nil
  76                             fortran-to-lisp::ier)
  77            :calls '(fortran-to-lisp::c1fm1b fortran-to-lisp::xerfft))))
  78