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BN_cmp(3)                           OpenSSL                          BN_cmp(3)

       BN_cmp, BN_ucmp, BN_is_zero, BN_is_one, BN_is_word, BN_is_odd - BIGNUM
       comparison and test functions

       libcrypto, -lcrypto

        #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);

       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.

       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.

       Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the OpenSSL license (the "License").  You may not use
       this file except in compliance with the License.  You can obtain a copy
       in the file LICENSE in the source distribution or at

1.1.1                             2018-09-17                         BN_cmp(3)