Division by 2
Sat, 03 May 2003 09:30:33 +1000
> What version of the manual?
> I have 4.1.2, which I downloaded very recently. "Efficiency" is not
> in the index.
If you're looking at it with the stand-alone info program, check
you're not hitting a version under /usr/info or /usr/share/info
instead. It searches INFOPATH if you don't give a full path.
In any case the node is
and the relevant text is merely
It's up to an application to call functions like `mpz_mul_2exp'
when appropriate. General purpose functions like `mpz_mul' make
no attempt to identify powers of two or other special forms,
because such inputs will usually be very rare and testing every
time would be wasteful.