#include
int BN_zero(BIGNUM *a); int BN_one(BIGNUM *a);
const BIGNUM *BN_value_one(void);
int BN_set_word(BIGNUM *a, unsigned long w); unsigned long BN_get_word(BIGNUM *a);
_B_N___v_a_l_u_e___o_n_e_(_) returns a BBIIGGNNUUMM constant of value 1. This constant is useful for use in comparisons and assignment.
_B_N___g_e_t___w_o_r_d_(_) returns aa, if it can be represented as an unsigned long.
_B_N___z_e_r_o_(_), _B_N___o_n_e_(_) and _B_N___s_e_t___w_o_r_d_(_) return 1 on success, 0 otherwise. _B_N___v_a_l_u_e___o_n_e_(_) returns the constant.
If a BBIIGGNNUUMM is equal to 0xffffffffL it can be represented as an unsigned long but this value is also returned on error.
_B_N___v_a_l_u_e___o_n_e_(_) was changed to return a true const BIGNUM * in OpenSSL 0.9.7.