From: Matt Mencel <MR-Mencel@...>
Date: 2010-08-10T07:09:03+09:00
Subject: Error:  Bignum too big to convert into `long'

Hi,

I've got a bit of code that I borrowed from here http://www.ruby-forum.com/topic/77821.  I use it to convert MS timestamps into a ruby Time object.
It works fine on Mac/Linux, but not on a Solaris SPARC system.  The error is "bignum too big to convert into `long'" and it occurs on the line that begins...
Time.at(.....)

I'm wondering if it's because SPARC is Big-Endian that I get the error?


  def self.ad2time(timestamp)
    ad_epoch = 116_444_736_000_000_000
    ad_multiplier = 10_000_000
    
    # DEBUG
    ap ad_epoch.class
    puts "TIMESTAMP:  #{timestamp}"
    ap timestamp.class

    Time.at((timestamp.to_i - ad_epoch) / ad_multiplier)
  end



On my Mac (Snow Leopard x86_64) the DEBUG output looks like this...
Fixnum < Integer
TIMESTAMP:  9223372036854775807
Net::BER::BerIdentifiedString < String

On Solaris SPARC it's this...
Bignum < Integer
TIMESTAMP:  9223372036854775807
String < Object



Looks like on Solaris it forces the 'ad_epoch' to a Bignum instead of a Fixnum?  Should I try to cast it to a Fixnum on Solaris maybe?

Matt