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| laziness, impatience, and hubris | |
| PerlMonks |
Re: Re (tilly) 1: In theory, theory and practice are the same...by ariels (Curate) |
| on Apr 11, 2001 at 10:55 UTC ( [id://71603]=note: print w/replies, xml ) | Need Help?? |
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Perl computes floating-point using doubles, which typically have a 48 bit mantissa. 4-byte ints have just 32 bits of precision, so it's natural that doubles have a larger integer range than ints! So you can pretend Perl has 48-bit integers for most purposes.
It's still not a good idea to compute huge numbers and try to cancel them out. Especially when not doing this takes fewer operations.
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