BN_cmp, BN_ucmp, BN_is_zero, BN_is_one, BN_is_word, BN_abs_is_word, BN_is_odd -
BIGNUM comparison and test functions
#include <openssl/bn.h>
int BN_cmp(const BIGNUM *a, const BIGNUM *b);
int BN_ucmp(const BIGNUM *a, const BIGNUM *b);
int BN_is_zero(const BIGNUM *a);
int BN_is_one(const BIGNUM *a);
int BN_is_word(const BIGNUM *a, const BN_ULONG w);
int BN_abs_is_word(const BIGNUM *a, const BN_ULONG w);
int BN_is_odd(const BIGNUM *a);
BN_cmp() compares the numbers
a and
b.
BN_ucmp()
compares their absolute values.
BN_is_zero(),
BN_is_one(),
BN_is_word() and
BN_abs_is_word() test if
a equals 0, 1,
w, or |
w|
respectively.
BN_is_odd() tests if
a is odd.
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(),
BN_abs_is_word() and
BN_is_odd() return 1 if the condition is
true, 0 otherwise.
Prior to OpenSSL 1.1.0,
BN_is_zero(),
BN_is_one(),
BN_is_word(),
BN_abs_is_word() and
BN_is_odd() were
macros.
Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (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
<
https://www.openssl.org/source/license.html>.