[Mono-list] IntegerFormatter

[Nick Drochak]

Yeah, that's what I thought at first too.  However, when you use
ToString() with a second parameter in VS.Net like:

sbyte sb = -128;
String s = sb.ToString("n", NumberFormatInfo.InvariantInfo)

Then s is "(128.00)".

An example from MSDN (NumberFormatInfo.NumberNegativePattern Property)
has something similar: using System; using System.Globalization; class
SamplesNumberFormatInfo  {

   public static void Main()  {

      // Create a new NumberFormatinfo instance.
      NumberFormatInfo myNfi = new NumberFormatInfo();

      // Take a negative value.
      Int64 myInt = -1234;

      // Display the value with default formatting.
      Console.WriteLine( "Default  \t:\t{0}", myInt.ToString( "N", myNfi
) );

      // Display the value with other patterns.
      for ( int i = 0; i <= 4; i++ )  {
         myNfi.NumberNegativePattern = i;
         Console.WriteLine( "Pattern {0}\t:\t{1}",
myNfi.NumberNegativePattern, myInt.ToString( "N", myNfi ) );
      }
   }
}
/*
Output:

Default         :       (1,234.00)
Pattern 0       :       (1,234.00)
Pattern 1       :       -1,234.00
Pattern 2       :       - 1,234.00
Pattern 3       :       1,234.00-
Pattern 4       :       1,234.00 -
*/



> -----Original Message-----
> From: Derek Holden [mailto:dsh2120@draper.com]
> Sent: Tuesday, November 27, 2001 9:33 PM
> To: Nick Drochak
> Subject: Re: IntegerFormatter
> 
> 
> Hey Nick,
> 
> I think the error may be in the SByte test. Format type "n"
> is listed in the EMCA IFormattable doc as:
> 
> n  Number Format: Used for strings in the following form:
> 
> [-]d,ddd,ddd.dd...d
> 
> The minus sign ("-") appears only if the number is negative.
> At least one non-zero digit (d) precedes the decimal 
> separator ("."). The precision specifier determines the 
> number of decimal places (dd.d). If the precision specifier 
> is omitted, NumberFormatInfo.NumberDecimalDigits determines 
> the number of decimal places in the string. Results are 
> rounded to the nearest representable value when necessary. 
> The NumberGroupSizes, NumberGroupSeparator, and 
> NumberDecimalSeparator members of a NumberFormatInfo supply 
> the size and separator for digit groupings, and decimal 
> separator, respectively.
> 
> I know in currency format and percent format that parenthesis
> are used for negative values, but that is determined by 
> NumberFormatInfo.CurrencyNegativePattern and 
> NumberFormatInfo.PercentNegativePattern, which are defined in 
> the NumberFormatInfo spec.
> 
> ----- Original Message -----
> From: "Nick Drochak" <ndrochak@gol.com>
> To: <dholden@draper.com>
> Cc: <mono-list@ximian.com>
> Sent: Tuesday, November 27, 2001 7:20 AM
> Subject: IntegerFormatter
> 
> 
> > Derek,
> >
> > The Nunit test for Sbyte is failing, but the problem seems to be in
> > IntegerFormatter.cs.  When the test does ToString("n",
> > NumberFormatInfo.InvariantInfo) on an Sbyte with value 
> -128, it should
> > produce "(128.00)".  However, instead we get "-128.00".
> >
> > In fact, from the code it looks like all the integral types
> never get
> > formatted with the parentheses.  Can you have a look at
> this?  Sorry I
> > don't have a patch for you myself :)
> >
> > Regards,
> > Nick
> >
> >
> >
> 
> 
>