hari <hariprasad81@yahoo.com> writes: Iam implementing a program using gmp lib. But i wasnt able to do a^b because gmp doesnt have that function where as it has a^b mod c. It would be great if any one of you would let me know is there any power function to calculate power of an mpz_t type of variable. There are such functions. You need to read the manual better. -- Torbjörn