loncom/xml/lontexconvert.pm - diff

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version 1.46, 2005/02/24 05:26:00	version 1.48, 2005/02/24 05:40:08
Line 237 sub algebra {	Line 237 sub algebra {
sub prepare_algebra {	sub prepare_algebra {
my ($string)=@_;	my ($string)=@_;

#protect the confusable greek symbols	# change some multi character operators into single character operators
	$string =~ s/<>/\#/g;
	$string =~ s/<\=/\%/g;
	$string =~ s/>\=/\!/g;

	# makes the decision about what is a minus sign easier
	$string =~ s/([\=\>\<\%\!\#] *)-/$1 zeroplace -/g;

	# protect the confusable greek symbols
$string =~ s/delta/zdelta/g;	$string =~ s/delta/zdelta/g;
$string =~ s/beta/bita/g;	$string =~ s/beta/bita/g;
$string =~ s/theta/thita/g;	$string =~ s/theta/thita/g;
Line 251 sub prepare_algebra {	Line 259 sub prepare_algebra {

sub postprocess_algebra {	sub postprocess_algebra {
my ($string)=@_;	my ($string)=@_;

	# remove the chunk used to sepearate out the minus signs
	$string =~ s/zeroplace//g;

	# exapnd out some operators
	$string =~ s/\#/\\not= /g;
	$string =~ s/\%/\\leq /g;
	$string =~ s/\!/\\geq /g;

# replace some special symbols with the LaTeX equivalents	# replace some special symbols with the LaTeX equivalents
$string =~ s/infty/\\infty/g;	$string =~ s/infty/\\infty/g;