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diff --git a/src/lib/libcrypto/man/BN_zero.3 b/src/lib/libcrypto/man/BN_zero.3
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-.\" $OpenBSD: BN_zero.3,v 1.13 2023/04/30 19:23:54 tb Exp $
-.\" full merge up to: OpenSSL a528d4f0 Oct 27 13:40:11 2015 -0400
-.\" selective merge up to: OpenSSL b713c4ff Jan 22 14:41:09 2018 -0500
-.\"
-.\" This file is a derived work.
-.\" The changes are covered by the following Copyright and license:
-.\"
-.\" Copyright (c) 2021, 2022 Ingo Schwarze <schwarze@openbsd.org>
-.\"
-.\" Permission to use, copy, modify, and distribute this software for any
-.\" purpose with or without fee is hereby granted, provided that the above
-.\" copyright notice and this permission notice appear in all copies.
-.\"
-.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-.\"
-.\" The original file was written by Ulf Moeller <ulf@openssl.org>.
-.\" Copyright (c) 2000, 2001, 2018 The OpenSSL Project.
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\"
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\"
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in
-.\"    the documentation and/or other materials provided with the
-.\"    distribution.
-.\"
-.\" 3. All advertising materials mentioning features or use of this
-.\"    software must display the following acknowledgment:
-.\"    "This product includes software developed by the OpenSSL Project
-.\"    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
-.\"
-.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
-.\"    endorse or promote products derived from this software without
-.\"    prior written permission. For written permission, please contact
-.\"    openssl-core@openssl.org.
-.\"
-.\" 5. Products derived from this software may not be called "OpenSSL"
-.\"    nor may "OpenSSL" appear in their names without prior written
-.\"    permission of the OpenSSL Project.
-.\"
-.\" 6. Redistributions of any form whatsoever must retain the following
-.\"    acknowledgment:
-.\"    "This product includes software developed by the OpenSSL Project
-.\"    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
-.\"
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-.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
-.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
-.\" OF THE POSSIBILITY OF SUCH DAMAGE.
-.\"
-.Dd $Mdocdate: April 30 2023 $
-.Dt BN_ZERO 3
-.Os
-.Sh NAME
-.Nm BN_zero ,
-.Nm BN_one ,
-.Nm BN_value_one ,
-.Nm BN_set_word ,
-.Nm BN_get_word
-.Nd BIGNUM assignment operations
-.Sh SYNOPSIS
-.In openssl/bn.h
-.Ft int
-.Fo BN_zero
-.Fa "BIGNUM *a"
-.Fc
-.Ft int
-.Fo BN_one
-.Fa "BIGNUM *a"
-.Fc
-.Ft const BIGNUM *
-.Fo BN_value_one
-.Fa void
-.Fc
-.Ft int
-.Fo BN_set_word
-.Fa "BIGNUM *a"
-.Fa "BN_ULONG w"
-.Fc
-.Ft BN_ULONG
-.Fo BN_get_word
-.Fa "const BIGNUM *a"
-.Fc
-.Sh DESCRIPTION
-.Vt BN_ULONG
-is a macro that expands to an unsigned integral type optimized
-for the most efficient implementation on the local platform.
-It is
-.Vt unsigned long Pq = Vt uint64_t
-on
-.Dv _LP64
-platforms and
-.Vt unsigned int Pq = Vt uint32_t
-elsewhere.
-.Pp
-.Fn BN_zero ,
-.Fn BN_one ,
-and
-.Fn BN_set_word
-set
-.Fa a
-to the values 0, 1 and
-.Fa w
-respectively.
-.Pp
-.Fn BN_value_one
-returns a
-.Vt BIGNUM
-constant of value 1.
-This constant is useful for comparisons and assignments.
-.Sh RETURN VALUES
-.Fn BN_get_word
-returns the value
-.Fa a ,
-or a number with all bits set if
-.Fa a
-cannot be represented as a
-.Vt BN_ULONG .
-.Pp
-.Fn BN_zero ,
-.Fn BN_one ,
-and
-.Fn BN_set_word
-return 1 on success, 0 otherwise.
-.Fn BN_value_one
-returns the constant.
-.Sh SEE ALSO
-.Xr BN_bn2bin 3 ,
-.Xr BN_new 3 ,
-.Xr BN_set_bit 3 ,
-.Xr BN_set_negative 3
-.Sh HISTORY
-.Fn BN_zero ,
-.Fn BN_one ,
-.Fn BN_value_one ,
-and
-.Fn BN_set_word
-first appeared in SSLeay 0.5.1.
-.Fn BN_get_word
-first appeared in SSLeay 0.6.0.
-These functions have been available since
-.Ox 2.4 .
-.Sh BUGS
-Someone might change the constant.
-.Pp
-If the value of a
-.Vt BIGNUM
-is equal to a
-.Vt BN_ULONG
-with all bits set, the return value of
-.Fn BN_get_word
-collides with return value used to indicate errors.
-.Pp
-.Vt BN_ULONG
-should probably be a typedef rather than a macro.