| BN_cmp | ||
|---|---|---|
 | 179.2. Cryptographic functions |  |
Name
BN_cmp, BN_ucmp, BN_is_zero, BN_is_one, BN_is_word, BN_is_odd — BIGNUM comparison and test functions
Synopsis
#include <openssl/bn.h>
int BN_cmp(BIGNUM *a, BIGNUM *b); int BN_ucmp(BIGNUM *a, BIGNUM *b);
int BN_is_zero(BIGNUM *a); int BN_is_one(BIGNUM *a); int BN_is_word(BIGNUM *a, BN_ULONG w); int BN_is_odd(BIGNUM *a);
DESCRIPTION
BN_cmp() compares the numbers a and b. BN_ucmp() compares their absolute values.
BN_is_zero(), BN_is_one() and BN_is_word() test if a equals 0, 1, or w respectively. BN_is_odd() tests if a is odd.
BN_is_zero(), BN_is_one(), BN_is_word() and BN_is_odd() are macros.
RETURN VALUES
BN_cmp() returns -1 if a < b, 0 if a == b and 1 if a > b. BN_ucmp() is the same using the absolute values of a and b.
BN_is_zero(), BN_is_one() BN_is_word() and BN_is_odd() return 1 if the condition is true, 0 otherwise.
SEE ALSO
HISTORY
BN_cmp(), BN_ucmp(), BN_is_zero(), BN_is_one() and BN_is_word() are available in all versions of SSLeay and OpenSSL. BN_is_odd() was added in SSLeay 0.8.
| |  | |
| BN_bn2bin |  | BN_copy |
| 2024-03-18 | eCosPro License |