BN_cmp(3ssl) - phpMan

BN_cmp(3SSL)                                 OpenSSL                                 BN_cmp(3SSL)



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
       bn(3)

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.



0.9.8g                                      2000-01-27                               BN_cmp(3SSL)

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