Yes, good point... We're not really simulating sprintf(), but just the part where we take a number and add a decimal place at one part of a number and format it to our liking...
I think a lot of people didn't notice that the Perl code was just a snippet of what was in the actual function, and that I didn't provide the entire thing... if we examine the JavaScript version, we will notice that it handles the special cases:
strValue += ""; // Convert any digits to string
if (! strValue) { strValue = "0"; } // Convert empty string to 0
// Set any non-numeric values to 0
if (! strValue.match (/^\d+\.?$|\d+\.?\d*$|\d*\.?\d+$/)) { strValue
+= "0"; }
// Add a leading 0 to any numbers starting with a decimal point
if (strValue.match (/^\./)) { strValue = "0" + strValue; }
So what we really have (without actually provided the entire function :) is:
value|precision sprintf Incognito Albannach jeffa r
+ob_au
'123.45678'|3: 123.457 123.456 123.456 123 12
+3.457
'12.4'|1: 12.4 12.4 12.4 12
+ 12.4
''|0: 0 0
+ 0
'3.14'|5: 3.14000 3.14000 3.14000 00003.14 3.
+14000
'1'|5: 1.00000 1.00000 1.00000 00001 1.
+00000
'.5'|0: 0 0
+ 1
'10'|5: 10.00000 10.00000 10.00000 00010 10.
+00000
'12.45435'|0: 12 12 12 12
+ 12
'100'|5: 100.00000 100.00000 100.00000 00100 100.
+00000
'3.'|0: 3 3 3 3
+ 3
'1000'|5: 1000.00000 1000.00000 1000.00000 01000 1000.
+00000
'12.56'|0: 13 12 12 12
+ 13
