src/numerical/slatec/zabs.lisp

   1 ;;; Compiled by f2cl version:
   2 ;;; ("f2cl1.l,v 46c1f6a93b0d 2012/05/03 04:40:28 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 46c1f6a93b0d 2012/05/03 04:40:28 toy $"
   7 ;;;  "f2cl6.l,v 1d5cbacbb977 2008/08/24 00:56:27 rtoy $"
   8 ;;;  "macros.l,v fceac530ef0c 2011/11/26 04:02:26 toy $")
   9
  10 ;;; Using Lisp CMU Common Lisp snapshot-2012-04 (20C Unicode)
  11 ;;;
  12 ;;; Options: ((:prune-labels nil) (:auto-save t) (:relaxed-array-decls t)
  13 ;;;           (:coerce-assigns :as-needed) (:array-type ':simple-array)
  14 ;;;           (:array-slicing nil) (:declare-common nil)
  15 ;;;           (:float-format double-float))
  16
  17 (in-package :slatec)
  18
  19
  20 (defun zabs (zr zi)
  21   (declare (type (double-float) zi zr))
  22   (prog ((u 0.0) (v 0.0) (q 0.0) (s 0.0) (zabs 0.0))
  23     (declare (type (double-float) zabs s q v u))
  24     (setf u (abs zr))
  25     (setf v (abs zi))
  26     (setf s (+ u v))
  27     (setf s (* s 1.0))
  28     (if (= s 0.0) (go label20))
  29     (if (> u v) (go label10))
  30     (setf q (/ u v))
  31     (setf zabs (* v (f2cl-lib:fsqrt (+ 1.0 (* q q)))))
  32     (go end_label)
  33    label10
  34     (setf q (/ v u))
  35     (setf zabs (* u (f2cl-lib:fsqrt (+ 1.0 (* q q)))))
  36     (go end_label)
  37    label20
  38     (setf zabs 0.0)
  39     (go end_label)
  40    end_label
  41     (return (values zabs nil nil))))
  42
  43 (in-package #:cl-user)
  44 #+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
  45 (eval-when (:load-toplevel :compile-toplevel :execute)
  46   (setf (gethash 'fortran-to-lisp::zabs fortran-to-lisp::*f2cl-function-info*)
  47           (fortran-to-lisp::make-f2cl-finfo
  48            :arg-types '((double-float) (double-float))
  49            :return-values '(nil nil)
  50            :calls 'nil)))
  51