=pod =head1 NAME BN_num_bits, BN_num_bytes, BN_num_bits_word - get BIGNUM size =head1 SYNOPSIS #include <openssl/bn.h> int BN_num_bytes(const BIGNUM *a); int BN_num_bits(const BIGNUM *a); int BN_num_bits_word(BN_ULONG w); =head1 DESCRIPTION These functions return the size of a B<BIGNUM> in bytes or bits, and the size of an unsigned integer in bits. BN_num_bytes() is a macro. =head1 RETURN VALUES The size. =head1 SEE ALSO L<bn(3)|bn(3)> =head1 HISTORY BN_num_bytes(), BN_num_bits() and BN_num_bits_word() are available in all versions of SSLeay and OpenSSL. =cut