1 files changed, 37 insertions, 0 deletions
diff --git a/gnu/usr.bin/groff/libgroff/strerror.c b/gnu/usr.bin/groff/libgroff/strerror.c
new file mode 100644
index 000000000000..de42b838468d
--- /dev/null
+++ b/gnu/usr.bin/groff/libgroff/strerror.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+groff is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License along
+with groff; see the file COPYING.  If not, write to the Free Software
+Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <stdio.h>
+
+#define INT_DIGITS 19		/* enough for 64 bit integer */
+
+extern int sys_nerr;
+extern char *sys_errlist[];
+
+char *strerror(n)
+     int n;
+{
+  static char buf[sizeof("Error ") + 1 + INT_DIGITS];
+  if (n >= 0 && n < sys_nerr && sys_errlist[n] != 0)
+    return sys_errlist[n];
+  else {
+    sprintf(buf, "Error %d", n);
+    return buf;
+  }
+}