logbinomial

mpsci.fun.logbinomial(n, k)

Natural logarithm of binomial(n, k).

Examples

>>> from mpmath import mp
>>> mp.dps = 25
>>> from mpsci.fun import logbinomial

Compute the log of C(1500, 450).

>>> logbinomial(1500, 450)
mpf('912.5010192350457701746286796')

Verify that it is the expected value.

>>> mp.log(mp.binomial(1500, 450))
mpf('912.5010192350457701746286773')