added: button sqrt() on the first tab

(there was not a function to it)



git-svn-id: svn://ttmath.org/publicrep/ttcalc/trunk@232 e52654a7-88a9-db11-a3e9-0013d4bc506e

help/rounding_functions.html

@@ -10,6 +10,7 @@
 		<param name="Keyword" value="round">
 		<param name="Keyword" value="ceil">
 		<param name="Keyword" value="floor">
+		<param name="Keyword" value="frac">
 	</object>
 </head>
 
@@ -57,6 +58,11 @@ floor(2)=2<br>
 floor(-4.1)=-5<br>
 floor(-4.8)=-5</dd>
 
+<dt>frac(x)</dt>
+<dd>This function returns a value without the integer part - only fraction remains<br>
+frac(45.789)=0.789<br>
+frac(-2.267)=-0.267<br>
+
 </dl>