Artifact 4505d0eae44cd933e7d52c0b025f5d2988187808cfbe05783a9a7ede82b0c346:

• File psl-1983/3-1/util/slow-strings.sl — part of check-in [eb17ceb7f6] at 2020-04-21 19:40:01 on branch master — Add Reduce 3.0 to the historical section of the archive, and some more
  files relating to version sof PSL from the early 1980s. Thanks are due to
  Paul McJones and Nelson Beebe for these, as well as to all the original
  authors.

  git-svn-id: https://svn.code.sf.net/p/reduce-algebra/code/historical@5328 2bfe0521-f11c-4a00-b80e-6202646ff360 (user: arthurcnorman@users.sourceforge.net, size: 1277) [annotate] [blame] [check-ins using] [more...]

• File psl-1983/util/slow-strings.sl — part of check-in [eb17ceb7f6] at 2020-04-21 19:40:01 on branch master — Add Reduce 3.0 to the historical section of the archive, and some more
  files relating to version sof PSL from the early 1980s. Thanks are due to
  Paul McJones and Nelson Beebe for these, as well as to all the original
  authors.

  git-svn-id: https://svn.code.sf.net/p/reduce-algebra/code/historical@5328 2bfe0521-f11c-4a00-b80e-6202646ff360 (user: arthurcnorman@users.sourceforge.net, size: 1277) [annotate] [blame] [check-ins using]

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% SLOW-STRINGS - Useful String Functions (with lots of error checking)
% 
% Author:      Alan Snyder
%              Hewlett-Packard/CRC
% Date:        17 September 1982
%
% Defines the following functions:
%
% (string-fetch s i)
% (string-store s i ch)
% (string-length s)
% (string-upper-bound s)
% (string-empty? s)
%
% See FAST-STRINGS for faster (unchecked) compiled versions of these functions.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

(de string-fetch (s i)
  (cond ((not (StringP s)) (NonStringError s 'String-Fetch))
	((not (FixP i)) (NonIntegerError i 'String-Fetch))
	(t (indx s i))
	))

(de string-store (s i c)
  (cond ((not (StringP s)) (NonStringError s 'String-Store))
	((not (FixP i)) (NonIntegerError i 'String-Store))
	((not (FixP c)) (NonCharacterError c 'String-Store))
	(t (setindx s i c))
	))

(de string-length (s)
  (cond ((not (StringP s)) (NonStringError s 'String-Length))
	(t (Plus2 (size s) 1))
	))

(de string-upper-bound (s)
  (cond ((not (StringP s)) (NonStringError s 'String-Upper-Bound))
	(t (size s))
	))

(de string-empty? (s)
  (cond ((not (StringP s)) (NonStringError s 'String-Empty?))
	(t (EqN (size s) -1))
	))