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BN_cmp(3)							     BN_cmp(3)

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
       The BN_cmp() function compares the numbers a and b. The BN_ucmp() func‐
       tion compares their absolute values.

       The  BN_is_zero(), BN_is_one(), and BN_is_word() test if a equals 0, 1,
       or w respectively. The BN_is_odd() tests if a is odd.

       The  BN_is_zero(),  BN_is_one(),	 BN_is_word(),	and  BN_is_odd()   are
       macros.

RETURN VALUES
       The  BN_cmp()  functon returns -1 if a < b, 0 if a == b and 1 if a > b.
       The BN_ucmp() function is the same using the absolute values of	a  and
       b.

       The  BN_is_zero(),  BN_is_one(),	 BN_is_word(),	and BN_is_odd() macros
       return 1 if the condition is true, 0 otherwise.

HISTORY
       The BN_cmp(), BN_ucmp(), BN_is_zero(),  BN_is_one(),  and  BN_is_word()
       functions  are  available  in  all versions of SSLeay and OpenSSL.  The
       BN_is_odd() function was added in SSLeay 0.8.

SEE ALSO
       Functions: bn(3)

								     BN_cmp(3)
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