Correctly describe the return values of BN_hex2bn(3) and BN_dec2bn(3).

Inspired by OpenSSL commit a130950d Aug 23 12:06:41 2017 -0400
by Rich Salz <rsalz at openssl dot org>, but using a more explicit
wording, and fixing *both* places rather than only half of them.

1 files changed, 8 insertions, 5 deletions

diff --git a/lib/libcrypto/man/BN_bn2bin.3 b/lib/libcrypto/man/BN_bn2bin.3
index d9cf3915f69..ee05b052f4c 100644
--- a/lib/libcrypto/man/BN_bn2bin.3
+++ b/lib/libcrypto/man/BN_bn2bin.3
@@ -1,5 +1,6 @@
-.\"	$OpenBSD: BN_bn2bin.3,v 1.11 2018/03/27 17:35:50 schwarze Exp $
-.\"	OpenSSL a528d4f0 Oct 27 13:40:11 2015 -0400
+.\"	$OpenBSD: BN_bn2bin.3,v 1.12 2018/12/19 21:53:53 schwarze Exp $
+.\" full merge up to: OpenSSL a528d4f0 Oct 27 13:40:11 2015 -0400
+.\" selective merge up to: OpenSSL 1212818e Sep 11 13:22:14 2018 +0100
 .\"
 .\" This file was written by Ulf Moeller <ulf@openssl.org>.
 .\" Copyright (c) 2000, 2002, 2016 The OpenSSL Project.  All rights reserved.
@@ -48,7 +49,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 .\" OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: March 27 2018 $
+.Dd $Mdocdate: December 19 2018 $
 .Dt BN_BN2BIN 3
 .Os
 .Sh NAME
@@ -181,7 +182,8 @@ If
 .Fa a
 is
 .Dv NULL ,
-it only computes the number's length in hexadecimal digits.
+it only computes the number's length in hexadecimal digits,
+also counting the leading minus sign if there is one.
 A "negative zero" is converted to zero.
 .Fn BN_dec2bn
 is the same using the decimal system.
@@ -268,7 +270,8 @@ on error.
 .Fn BN_hex2bn
 and
 .Fn BN_dec2bn
-return the number's length in hexadecimal or decimal digits
+return the number's length in hexadecimal or decimal digits,
+also counting the leading minus sign if there is one,
 or 0 on error, in which case no new
 .Vt BIGNUM
 is created.