The problem with RPC::XML::Server returning very small/large doubles in exponential format can be fixed in RPC::XML.pm. Specifically, by forcing $value to be a floating-point string we can guarantee that it won't be sent in exponential format.
This patch implements that conversion
310a312,324
Show quoted text> sub new
> {
> my $class = shift;
> my $value = shift;
>
> #Make sure that the value is in decimal format. Values
> #in the format 0.0E0 are not valid XML-RPC doubles
> $value=sprintf("%f",$value);
>
> RPC::XML::simple_type::new($class,$value);
> }
>
I haven't tested it against all cases, but it has fixed my problems with PHP's XML-RPC client. Also, there may be a way to force Perl to not send a exponential value without forcing it to a string, but I don't know of one.
Sean Tobin
byrdhuntr@hotmail.com
Show quoted text> Subject: [rt.cpan.org #31818] AutoReply: Very small/large double values not following spec
> From: bug-RPC-XML@rt.cpan.org
> To: byrdhuntr@hotmail.com
> Date: Fri, 21 Dec 2007 15:44:03 -0500
>
>
> Greetings,
>
> This message has been automatically generated in response to the
> creation of a trouble ticket regarding:
> "Very small/large double values not following spec",
> a summary of which appears below.
>
> There is no need to reply to this message right now. Your ticket has been
> assigned an ID of [rt.cpan.org #31818]. Your ticket is accessible
> on the web at:
>
>
http://rt.cpan.org/Ticket/Display.html?id=31818
>
> Please include the string:
>
> [rt.cpan.org #31818]
>
> in the subject line of all future correspondence about this issue. To do so,
> you may reply to this message.
>
> Thank you,
> bug-RPC-XML@rt.cpan.org
>
> -------------------------------------------------------------------------
> When returning the numeric value '0.000005', RPC::XML::Server will
> output the exponential form of the number.
>
> 5.0E-6
>
> This violates the xmlrpc spec on double values. The relevant section
> taken from
http://www.xmlrpc.com/spec is:
>
> -----
> Q: What is the legal syntax (and range) for floating point values
> (doubles)? How is the exponent represented? How to deal with whitespace?
> Can infinity and "not a number" be represented?
>
> A: There is no representation for infinity or negative infinity or "not
> a number". At this time, only decimal point notation is allowed, a plus
> or a minus, followed by any number of numeric characters, followed by a
> period and any number of numeric characters. Whitespace is not allowed.
> The range of allowable values is implementation-dependent, is not specified.
> -----
>
> I can confirm that this breaks PHP's xmlrpc client, which errors out on
> these values.
