share/lapack/blas/dznrm2.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 (let* ((one 1.0) (zero 0.0))
  21   (declare (type (double-float 1.0 1.0) one)
  22            (type (double-float 0.0 0.0) zero)
  23            (ignorable one zero))
  24   (defun dznrm2 (n x incx)
  25     (declare (type (array f2cl-lib:complex16 (*)) x)
  26              (type (f2cl-lib:integer4) incx n))
  27     (f2cl-lib:with-multi-array-data
  28         ((x f2cl-lib:complex16 x-%data% x-%offset%))
  29       (prog ((norm 0.0) (scale 0.0) (ssq 0.0) (temp 0.0) (ix 0) (dznrm2 0.0))
  30         (declare (type (f2cl-lib:integer4) ix)
  31                  (type (double-float) norm scale ssq temp dznrm2))
  32         (cond
  33           ((or (< n 1) (< incx 1))
  34            (setf norm zero))
  35           (t
  36            (setf scale zero)
  37            (setf ssq one)
  38            (f2cl-lib:fdo (ix 1 (f2cl-lib:int-add ix incx))
  39                          ((> ix
  40                              (f2cl-lib:int-add 1
  41                                                (f2cl-lib:int-mul
  42                                                 (f2cl-lib:int-add n
  43                                                                   (f2cl-lib:int-sub
  44                                                                    1))
  45                                                 incx)))
  46                           nil)
  47              (tagbody
  48                (cond
  49                  ((/= (f2cl-lib:dble (f2cl-lib:fref x (ix) ((1 *)))) zero)
  50                   (setf temp
  51                           (abs
  52                            (f2cl-lib:dble
  53                             (f2cl-lib:fref x-%data% (ix) ((1 *)) x-%offset%))))
  54                   (cond
  55                     ((< scale temp)
  56                      (setf ssq (+ one (* ssq (expt (/ scale temp) 2))))
  57                      (setf scale temp))
  58                     (t
  59                      (setf ssq (+ ssq (expt (/ temp scale) 2)))))))
  60                (cond
  61                  ((/= (f2cl-lib:dimag (f2cl-lib:fref x (ix) ((1 *)))) zero)
  62                   (setf temp
  63                           (abs
  64                            (f2cl-lib:dimag
  65                             (f2cl-lib:fref x-%data% (ix) ((1 *)) x-%offset%))))
  66                   (cond
  67                     ((< scale temp)
  68                      (setf ssq (+ one (* ssq (expt (/ scale temp) 2))))
  69                      (setf scale temp))
  70                     (t
  71                      (setf ssq (+ ssq (expt (/ temp scale) 2)))))))
  72               label10))
  73            (setf norm (* scale (f2cl-lib:fsqrt ssq)))))
  74         (setf dznrm2 norm)
  75         (go end_label)
  76        end_label
  77         (return (values dznrm2 nil nil nil))))))
  78
  79 (in-package #-gcl #:cl-user #+gcl "CL-USER")
  80 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
  81 (eval-when (:load-toplevel :compile-toplevel :execute)
  82   (setf (gethash 'fortran-to-lisp::dznrm2
  83                  fortran-to-lisp::*f2cl-function-info*)
  84           (fortran-to-lisp::make-f2cl-finfo
  85            :arg-types '((fortran-to-lisp::integer4)
  86                         (array fortran-to-lisp::complex16 (*))
  87                         (fortran-to-lisp::integer4))
  88            :return-values '(nil nil nil)
  89            :calls 'nil)))
  90