New function ERR_error_string_n.

[openssl.git] / doc / crypto / BN_zero.pod

diff --git a/doc/crypto/BN_zero.pod b/doc/crypto/BN_zero.pod
index 43b6337bae5f10adc1130e390974080a0615413e..165fd9a228c1999a6b626832dee928368f6ef990 100644 (file)
--- a/doc/crypto/BN_zero.pod
+++ b/doc/crypto/BN_zero.pod
@@ -39,6 +39,9 @@ BN_value_one() returns the constant.
 
 Someone might change the constant.
 
+If a B<BIGNUM> is equal to 0xffffffffL it can be represented as an
+unsigned long but this value is also returned on error.
+
 =head1 SEE ALSO
 
 L<bn(3)|bn(3)>, L<BN_bn2bin(3)|BN_bn2bin(3)>