Method Gmp.mpz()->bin()
- Method bin
Gmp.mpz bin(int k)
- Description
Return the binomial coefficient
n
over k, wheren
is the value of this mpz object. Negative values ofn
are supported using the identity(-n)->bin(k) == (-1)->pow(k) * (n+k-1)->bin(k)
(See Knuth volume 1, section 1.2.6 part G.)
- Throws
The k value can't be arbitrarily large. An error is thrown if it's too large.
- Note
This function is currently (Pike 7.8) not available with old releases of the gmp libraries.