Merge pull request processing-js#37 from davidleibovic/fix-bug-1828

unit tests pass, code looks good.

Author: Pomax

processing.js

@@ -9073,7 +9073,7 @@
     * @see nfs
     * @see nfp
     */
-    p.nfc = function(value, leftDigits, rightDigits) { return nfCore(value, "", "-", leftDigits, rightDigits, ","); };
+    p.nfc = function(value, rightDigits) { return nfCore(value, "", "-", 0, rightDigits, ","); };
 
     var decimalToHex = function(d, padding) {
       //if there is no padding value added, default padding to 8 else go into while statement.

test/unit/nfc.pde

@@ -0,0 +1,29 @@
+int a=200, b=-40000, c=1901024;
+
+String sa = nfc(a); 
+_checkEqual(sa, "200");
+
+String sb = nfc(b); 
+_checkEqual(sb, "-40,000"); 
+
+String sc = nfc(c); 
+_checkEqual(sc, "1,901,024"); 
+ 
+float d = 200.94, e = 40000, f = -1901024.012; 
+
+String sd = nfc(d, 2); 
+_checkEqual(sd, "200.94"); 
+
+String se = nfc(e, 2); 
+_checkEqual(se, "40,000.00"); 
+
+String sf = nfc(f, 2); 
+_checkEqual(sf, "-1,901,024.01");
+
+// test to see if we can trim a long fractional number down to 2 decimal places
+_checkEqual(nfc(1000.56789, 2), "1,000.57");
+
+// does rounding work correctly
+_checkEqual(nfc(-1234.99, 1), "-1,235.0");
+_checkEqual(nfc(-1234.994, 2), "-1,234.99");
+