share/colnew/lisp/dgefa.lisp

   1 ;;; Compiled by f2cl version:
   2 ;;; ("f2cl1.l,v 1.221 2010/05/26 19:25:52 rtoy Exp $"
   3 ;;;  "f2cl2.l,v 1.37 2008/02/22 22:19:33 rtoy Exp $"
   4 ;;;  "f2cl3.l,v 1.6 2008/02/22 22:19:33 rtoy Exp $"
   5 ;;;  "f2cl4.l,v 1.7 2008/02/22 22:19:34 rtoy Exp $"
   6 ;;;  "f2cl5.l,v 1.204 2010/02/23 05:21:30 rtoy Exp $"
   7 ;;;  "f2cl6.l,v 1.48 2008/08/24 00:56:27 rtoy Exp $"
   8 ;;;  "macros.l,v 1.114 2010/05/17 01:42:14 rtoy Exp $")
   9
  10 ;;; Using Lisp CMU Common Lisp CVS Head 2010-05-25 18:21:07 (20A Unicode)
  11 ;;;
  12 ;;; Options: ((:prune-labels nil) (:auto-save t) (:relaxed-array-decls t)
  13 ;;;           (:coerce-assigns :as-needed) (:array-type ':array)
  14 ;;;           (:array-slicing t) (:declare-common nil)
  15 ;;;           (:float-format double-float))
  16
  17 (in-package :colnew)
  18
  19
  20 (defun dgefa (a lda n ipvt info)
  21   (declare (type (array f2cl-lib:integer4 (*)) ipvt)
  22            (type (f2cl-lib:integer4) info n lda)
  23            (type (array double-float (*)) a))
  24   (f2cl-lib:with-multi-array-data
  25       ((a double-float a-%data% a-%offset%)
  26        (ipvt f2cl-lib:integer4 ipvt-%data% ipvt-%offset%))
  27     (prog ((j 0) (k 0) (kp1 0) (l 0) (nm1 0) (t$ 0.0))
  28       (declare (type (double-float) t$)
  29                (type (f2cl-lib:integer4) nm1 l kp1 k j))
  30       (setf info 0)
  31       (setf nm1 (f2cl-lib:int-sub n 1))
  32       (if (< nm1 1) (go label70))
  33       (f2cl-lib:fdo (k 1 (f2cl-lib:int-add k 1))
  34                     ((> k nm1) nil)
  35         (tagbody
  36           (setf kp1 (f2cl-lib:int-add k 1))
  37           (setf l
  38                   (f2cl-lib:int-sub
  39                    (f2cl-lib:int-add
  40                     (idamax (f2cl-lib:int-add (f2cl-lib:int-sub n k) 1)
  41                      (f2cl-lib:array-slice a
  42                                            double-float
  43                                            (k k)
  44                                            ((1 lda) (1 1)))
  45                      1)
  46                     k)
  47                    1))
  48           (setf (f2cl-lib:fref ipvt-%data% (k) ((1 1)) ipvt-%offset%) l)
  49           (if (= (f2cl-lib:fref a-%data% (l k) ((1 lda) (1 1)) a-%offset%) 0.0)
  50               (go label40))
  51           (if (= l k) (go label10))
  52           (setf t$ (f2cl-lib:fref a-%data% (l k) ((1 lda) (1 1)) a-%offset%))
  53           (setf (f2cl-lib:fref a-%data% (l k) ((1 lda) (1 1)) a-%offset%)
  54                   (f2cl-lib:fref a-%data% (k k) ((1 lda) (1 1)) a-%offset%))
  55           (setf (f2cl-lib:fref a-%data% (k k) ((1 lda) (1 1)) a-%offset%) t$)
  56          label10
  57           (setf t$
  58                   (/ -1.0
  59                      (f2cl-lib:fref a-%data%
  60                                     (k k)
  61                                     ((1 lda) (1 1))
  62                                     a-%offset%)))
  63           (dscal (f2cl-lib:int-sub n k) t$
  64            (f2cl-lib:array-slice a double-float ((+ k 1) k) ((1 lda) (1 1))) 1)
  65           (f2cl-lib:fdo (j kp1 (f2cl-lib:int-add j 1))
  66                         ((> j n) nil)
  67             (tagbody
  68               (setf t$
  69                       (f2cl-lib:fref a-%data%
  70                                      (l j)
  71                                      ((1 lda) (1 1))
  72                                      a-%offset%))
  73               (if (= l k) (go label20))
  74               (setf (f2cl-lib:fref a-%data% (l j) ((1 lda) (1 1)) a-%offset%)
  75                       (f2cl-lib:fref a-%data%
  76                                      (k j)
  77                                      ((1 lda) (1 1))
  78                                      a-%offset%))
  79               (setf (f2cl-lib:fref a-%data% (k j) ((1 lda) (1 1)) a-%offset%)
  80                       t$)
  81              label20
  82               (daxpy (f2cl-lib:int-sub n k) t$
  83                (f2cl-lib:array-slice a
  84                                      double-float
  85                                      ((+ k 1) k)
  86                                      ((1 lda) (1 1)))
  87                1
  88                (f2cl-lib:array-slice a
  89                                      double-float
  90                                      ((+ k 1) j)
  91                                      ((1 lda) (1 1)))
  92                1)
  93              label30))
  94           (go label50)
  95          label40
  96           (setf info k)
  97          label50
  98          label60))
  99      label70
 100       (setf (f2cl-lib:fref ipvt-%data% (n) ((1 1)) ipvt-%offset%) n)
 101       (if (= (f2cl-lib:fref a-%data% (n n) ((1 lda) (1 1)) a-%offset%) 0.0)
 102           (setf info n))
 103       (go end_label)
 104      end_label
 105       (return (values nil nil nil nil info)))))
 106
 107 (in-package #-gcl #:cl-user #+gcl "CL-USER")
 108 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
 109 (eval-when (:load-toplevel :compile-toplevel :execute)
 110   (setf (gethash 'fortran-to-lisp::dgefa fortran-to-lisp::*f2cl-function-info*)
 111           (fortran-to-lisp::make-f2cl-finfo
 112            :arg-types '((array double-float (*)) (fortran-to-lisp::integer4)
 113                         (fortran-to-lisp::integer4)
 114                         (array fortran-to-lisp::integer4 (1))
 115                         (fortran-to-lisp::integer4))
 116            :return-values '(nil nil nil nil fortran-to-lisp::info)
 117            :calls '(fortran-to-lisp::daxpy fortran-to-lisp::dscal
 118                     fortran-to-lisp::idamax))))
 119