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+.\" Copyright (c) 2018 Yubico AB. All rights reserved.
+.\" Use of this source code is governed by a BSD-style
+.\" license that can be found in the LICENSE file.
+.\"
+.Dd $Mdocdate: May 25 2018 $
+.Dt FIDO_STRERR 3
+.Os
+.Sh NAME
+.Nm fido_strerr
+.Nd FIDO 2 error codes
+.Sh SYNOPSIS
+.In fido.h
+.Ft const char *
+.Fn fido_strerr "int n"
+.Sh DESCRIPTION
+The
+.Fn fido_strerr
+function translates the error code
+.Fa n
+into a readable string,
+where
+.Fa n
+is an error code defined in
+.In fido/err.h .
+.Fn fido_strerr
+never returns NULL.
+Returned pointers point to static strings.