RE :Update: Actually, %.{$var}f doesn't do any trick except to produce an "Invalid conversion in printf..." warning. But the syntax is correct in the OPed example code: printf( "%.${dig}f", $num );

works for me in :

perl 5, version 20, subversion 2 (v5.20.2) built for x86_64-linux-gnu-thread-multi (with 101 registered patches)

Doesn't throw any warnings.

And sorry for the obviously FAQ however I was surprised that the data changed as I had not done any mathematical calculation on it just stored it and asked for some of it back. However I have obviously specified it is a numerical value by using printf.

Oh and I have now read " What Every Programmer Should Know About Floating-Point Arithmetic."

Consider me (somewhat) enlightened (on this topic).

and when I get a minute I will look at Math::BigFloat:

Many thanks

Cleggy

In reply to Re^2: Why do I get random numbers? by Cleggy
in thread Why do I get random numbers? by Cleggy

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