share/lapack/blas/isamax.lisp

   1 ;;; Compiled by f2cl version:
   2 ;;; ("f2cl1.l,v 2edcbd958861 2012/05/30 03:34:52 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 3fe93de3be82 2012/05/06 02:17:14 toy $"
   7 ;;;  "f2cl6.l,v 1d5cbacbb977 2008/08/24 00:56:27 rtoy $"
   8 ;;;  "macros.l,v 3fe93de3be82 2012/05/06 02:17:14 toy $")
   9
  10 ;;; Using Lisp CMU Common Lisp 20d (20D 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 :blas)
  18
  19
  20 (defun isamax (n sx incx)
  21   (declare (type (array single-float (*)) sx)
  22            (type (f2cl-lib:integer4) incx n))
  23   (f2cl-lib:with-multi-array-data
  24       ((sx single-float sx-%data% sx-%offset%))
  25     (prog ((i 0) (ix 0) (smax 0.0f0) (isamax 0))
  26       (declare (type (single-float) smax)
  27                (type (f2cl-lib:integer4) isamax ix i))
  28       (setf isamax 0)
  29       (if (or (< n 1) (<= incx 0)) (go end_label))
  30       (setf isamax 1)
  31       (if (= n 1) (go end_label))
  32       (if (= incx 1) (go label20))
  33       (setf ix 1)
  34       (setf smax (abs (f2cl-lib:fref sx-%data% (1) ((1 *)) sx-%offset%)))
  35       (setf ix (f2cl-lib:int-add ix incx))
  36       (f2cl-lib:fdo (i 2 (f2cl-lib:int-add i 1))
  37                     ((> i n) nil)
  38         (tagbody
  39           (if
  40            (<= (abs (f2cl-lib:fref sx-%data% (ix) ((1 *)) sx-%offset%)) smax)
  41            (go label5))
  42           (setf isamax i)
  43           (setf smax (abs (f2cl-lib:fref sx-%data% (ix) ((1 *)) sx-%offset%)))
  44          label5
  45           (setf ix (f2cl-lib:int-add ix incx))
  46          label10))
  47       (go end_label)
  48      label20
  49       (setf smax (abs (f2cl-lib:fref sx-%data% (1) ((1 *)) sx-%offset%)))
  50       (f2cl-lib:fdo (i 2 (f2cl-lib:int-add i 1))
  51                     ((> i n) nil)
  52         (tagbody
  53           (if (<= (abs (f2cl-lib:fref sx-%data% (i) ((1 *)) sx-%offset%)) smax)
  54               (go label30))
  55           (setf isamax i)
  56           (setf smax (abs (f2cl-lib:fref sx-%data% (i) ((1 *)) sx-%offset%)))
  57          label30))
  58       (go end_label)
  59      end_label
  60       (return (values isamax nil nil nil)))))
  61
  62 (in-package #:cl-user)
  63 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
  64 (eval-when (:load-toplevel :compile-toplevel :execute)
  65   (setf (gethash 'fortran-to-lisp::isamax
  66                  fortran-to-lisp::*f2cl-function-info*)
  67           (fortran-to-lisp::make-f2cl-finfo
  68            :arg-types '((fortran-to-lisp::integer4) (array single-float (*))
  69                         (fortran-to-lisp::integer4))
  70            :return-values '(nil nil nil)
  71            :calls 'nil)))
  72