[LON-CAPA-cvs] cvs: loncom /homework/math_parser ENode.pm
damieng
damieng at source.lon-capa.org
Fri Jan 27 15:24:26 EST 2017
damieng Fri Jan 27 20:24:26 2017 EDT
Modified files:
/loncom/homework/math_parser ENode.pm
Log:
<lm>: better TeX output for factorial
Index: loncom/homework/math_parser/ENode.pm
diff -u loncom/homework/math_parser/ENode.pm:1.4 loncom/homework/math_parser/ENode.pm:1.5
--- loncom/homework/math_parser/ENode.pm:1.4 Thu Jan 19 19:24:57 2017
+++ loncom/homework/math_parser/ENode.pm Fri Jan 27 20:24:26 2017
@@ -746,7 +746,12 @@
}
}
when ("!") {
- return($c0->toTeX()." !");
+ my $s = $c0->toTeX();
+ if ($c0->type == OPERATOR) {
+ $s = "(".$s.")";
+ }
+ $s .= " !";
+ return $s;
}
when ("%") {
return($c0->toTeX()." \\% ".$c1->toTeX());
@@ -805,6 +810,14 @@
when ("sqrt") { return "\\sqrt{".$c1->toTeX()."}"; }
when ("abs") { return "|".$c1->toTeX()."|"; }
when ("exp") { return "\\mathrm{e}^{".$c1->toTeX()."}"; }
+ when ("factorial") {
+ my $s = $c1->toTeX();
+ if ($c1->type == OPERATOR) {
+ $s = "(".$s.")";
+ }
+ $s .= " !";
+ return $s;
+ }
when ("diff") {
if (scalar(@children) == 3) {
return "\\frac{d}{d".$c2->toTeX()."} ".$c1->toTeX();
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