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Description Restrictions History | Return Values See Also |
Synopsis #include <openssl/bn.h>
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);
BN_value_one() returns a BIGNUM constant of value 1. This constant is useful for use in comparisons and assignment.
BN_get_word() returns a, if it can be represented as an unsigned long.
BN_zero(), BN_one() and BN_set_word() return 1 on success, 0 otherwise. BN_value_one() returns the constant.
If a BIGNUM is equal to 0xffffffffL it can be represented as an unsigned long but this value is also returned on error.
BN_value_one() was changed to return a true const BIGNUM * in OpenSSL 0.9.7.
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