Retrieve the logarithm of number in a specified base ?
kalinabears at iinet.net.au
Mon Dec 6 05:48:11 CET 2004
> RTFM ! :D
> Function: int mpfr_log (mpfr_t rop, mpfr_t op, mp_rnd_t rnd)
> Sorry, again.
> If you've got any suggestions, or another method to retrieve what i want :)
> Thanx !
If you need to get a base N logarithm of a number (where N is something
other than 2, 10, or e) then you might want to make use of the following
(well known) relationship:
The base-N logarithm of a number is equal to the natural (base-e) log of
that number, divided by the natural log of N.
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