[perl #825] [PATCH] Fix underflow error in fact_x_i

# New Ticket Created by Tony Payne # Please include the string: [perl #825] # in the subject line of all future correspondence about this issue. # URL: http://bugs6.perl.org/rt2/Ticket/Display.html?id=825 Conversion from a signed (int,float) to an unsigned int was causing underflow.

[perl #825] [PATCH] Fix underflow error in fact_x_i

Applied, thanks..