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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/doc/crypto/BN_cmp.pod | |
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Diffstat (limited to 'openssl/doc/crypto/BN_cmp.pod')
-rw-r--r-- | openssl/doc/crypto/BN_cmp.pod | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/openssl/doc/crypto/BN_cmp.pod b/openssl/doc/crypto/BN_cmp.pod new file mode 100644 index 000000000..23e9ed0b4 --- /dev/null +++ b/openssl/doc/crypto/BN_cmp.pod @@ -0,0 +1,48 @@ +=pod + +=head1 NAME + +BN_cmp, BN_ucmp, BN_is_zero, BN_is_one, BN_is_word, BN_is_odd - BIGNUM comparison and test functions + +=head1 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); + +=head1 DESCRIPTION + +BN_cmp() compares the numbers B<a> and B<b>. BN_ucmp() compares their +absolute values. + +BN_is_zero(), BN_is_one() and BN_is_word() test if B<a> equals 0, 1, +or B<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. + +=head1 RETURN VALUES + +BN_cmp() returns -1 if B<a> E<lt> B<b>, 0 if B<a> == B<b> and 1 if +B<a> E<gt> B<b>. BN_ucmp() is the same using the absolute values +of B<a> and B<b>. + +BN_is_zero(), BN_is_one() BN_is_word() and BN_is_odd() return 1 if +the condition is true, 0 otherwise. + +=head1 SEE ALSO + +L<bn(3)|bn(3)> + +=head1 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. + +=cut |