decch, rch1 and rch2 don’t have to be different from each other

Author: ratajs

lib/AdvDiv.dart

@@ -45,10 +45,14 @@ String? advdiv(String n1, String n2, [final String minstr = "-", final String de
 	if(n2[0]==".")
 		n2 = "0"+n2;
 
-	r1 = RegExp(RegExp.escape(rstr1)+r'(.+)'+RegExp.escape(rstr2)).firstMatch(n1)?[1] ?? "0";
-	n1 = n1.split(rstr1)[0].replaceFirst(RegExp(r'^0+'), "0").replaceFirst(RegExp(r1=="0" ? r'\.0*$' : r'\.$'), "");
-	r2 = RegExp(RegExp.escape(rstr1)+r'(.+)'+RegExp.escape(rstr2)).firstMatch(n2)?[1] ?? "0";
-	n2 = n2.split(rstr1)[0].replaceFirst(RegExp(r'^0+'), "0").replaceFirst(RegExp(r2=="0" ? r'\.0*$' : r'\.$'), "");
+	r1 = n1.contains(rstr1) ? (RegExp(RegExp.escape(rstr1)+r'(.+)'+RegExp.escape(rstr2)).firstMatch(n1.substring(n1.indexOf(".") + 1))?[1] ?? "0") : "0";
+	if(r1!="0")
+		n1 = n1.substring(0, n1.indexOf(".") + n1.substring(n1.indexOf(".") + 1).indexOf(rstr1));
+	n1 = n1.replaceFirst(RegExp(r'^0+'), "0").replaceFirst(RegExp(r1=="0" ? r'\.0*$' : r'\.$'), "");
+	r2 = n2.contains(rstr1) ? (RegExp(RegExp.escape(rstr1)+r'(.+)'+RegExp.escape(rstr2)).firstMatch(n2.substring(n2.indexOf(".") + 1))?[1] ?? "0") : "0";
+	if(r2!="0")
+		n2 = n2.substring(0, n2.indexOf(".") + n2.substring(n2.indexOf(".") + 1).indexOf(rstr1));
+	n2 = n2.replaceFirst(RegExp(r'^0+'), "0").replaceFirst(RegExp(r2=="0" ? r'\.0*$' : r'\.$'), "");
 
 
 	if(RegExp(r'^[0\.]+$').hasMatch(n2+r2))