share/fftpack5/lisp/costmi.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 $")
   9
  10 ;;; Using Lisp CMU Common Lisp snapshot-2020-04 (21D Unicode)
  11 ;;;
  12 ;;; Options: ((:prune-labels nil) (:auto-save t) (:relaxed-array-decls t)
  13 ;;;           (:coerce-assigns :as-needed) (:array-type ':array)
  14 ;;;           (:array-slicing t) (:declare-common nil)
  15 ;;;           (:float-format single-float))
  16
  17 (in-package "FFTPACK5")
  18
  19
  20 (defun costmi (n wsave lensav ier)
  21   (declare (type (array double-float (*)) wsave)
  22            (type (f2cl-lib:integer4) ier lensav n))
  23   (f2cl-lib:with-multi-array-data
  24       ((wsave double-float wsave-%data% wsave-%offset%))
  25     (prog ((ier1 0) (lnsv 0) (kc 0) (k 0) (fk 0.0d0) (dt 0.0d0) (pi$ 0.0d0)
  26            (ns2 0) (np1 0) (nm1 0))
  27       (declare (type (double-float) pi$ dt fk)
  28                (type (f2cl-lib:integer4) nm1 np1 ns2 k kc lnsv ier1))
  29       (setf ier 0)
  30       (cond
  31         ((< lensav
  32             (f2cl-lib:int-add (f2cl-lib:int-mul 2 n)
  33                               (f2cl-lib:int
  34                                (f2cl-lib:f2cl/
  35                                 (f2cl-lib:flog (f2cl-lib:freal n))
  36                                 (f2cl-lib:flog 2.0d0)))
  37                               4))
  38          (setf ier 2)
  39          (xerfft "COSTMI" 3)
  40          (go label300)))
  41       (if (<= n 3) (go end_label))
  42       (setf nm1 (f2cl-lib:int-sub n 1))
  43       (setf np1 (f2cl-lib:int-add n 1))
  44       (setf ns2 (the f2cl-lib:integer4 (truncate n 2)))
  45       (setf pi$ (* 4.0d0 (atan 1.0d0)))
  46       (setf dt (/ pi$ (f2cl-lib:ffloat nm1)))
  47       (setf fk 0.0d0)
  48       (f2cl-lib:fdo (k 2 (f2cl-lib:int-add k 1))
  49                     ((> k ns2) nil)
  50         (tagbody
  51           (setf kc (f2cl-lib:int-sub np1 k))
  52           (setf fk (+ fk 1.0d0))
  53           (setf (f2cl-lib:fref wsave-%data% (k) ((1 lensav)) wsave-%offset%)
  54                   (* 2.0d0 (sin (* fk dt))))
  55           (setf (f2cl-lib:fref wsave-%data% (kc) ((1 lensav)) wsave-%offset%)
  56                   (* 2.0d0 (cos (* fk dt))))
  57          label101))
  58       (setf lnsv
  59               (f2cl-lib:int-add nm1
  60                                 (f2cl-lib:int
  61                                  (/ (f2cl-lib:flog (f2cl-lib:freal nm1))
  62                                     (f2cl-lib:flog 2.0d0)))
  63                                 4))
  64       (multiple-value-bind (var-0 var-1 var-2 var-3)
  65           (rfftmi nm1
  66            (f2cl-lib:array-slice wsave-%data%
  67                                  double-float
  68                                  ((+ n 1))
  69                                  ((1 lensav))
  70                                  wsave-%offset%)
  71            lnsv ier1)
  72         (declare (ignore var-0 var-1 var-2))
  73         (setf ier1 var-3))
  74       (cond
  75         ((/= ier1 0)
  76          (setf ier 20)
  77          (xerfft "COSTMI" -5)))
  78      label300
  79       (go end_label)
  80      end_label
  81       (return (values nil nil nil ier)))))
  82
  83 (in-package #:cl-user)
  84 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
  85 (eval-when (:load-toplevel :compile-toplevel :execute)
  86   (setf (gethash 'fortran-to-lisp::costmi
  87                  fortran-to-lisp::*f2cl-function-info*)
  88           (fortran-to-lisp::make-f2cl-finfo
  89            :arg-types '((fortran-to-lisp::integer4) (array double-float (*))
  90                         (fortran-to-lisp::integer4)
  91                         (fortran-to-lisp::integer4))
  92            :return-values '(nil nil nil fortran-to-lisp::ier)
  93            :calls '(fortran-to-lisp::rfftmi fortran-to-lisp::xerfft))))
  94