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+.fp 5 CW
+.de Af
+.ds ;G \\*(;G\\f\\$1\\$3\\f\\$2
+.if !\\$4 .Af \\$2 \\$1 "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
+..
+.de aF
+.ie \\$3 .ft \\$1
+.el \{\
+.ds ;G \&
+.nr ;G \\n(.f
+.Af "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7" "\\$8" "\\$9"
+\\*(;G
+.ft \\n(;G \}
+..
+.de L
+.aF 5 \\n(.f "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
+..
+.de LR
+.aF 5 1 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
+..
+.de RL
+.aF 1 5 "\\$1" "\\$2" "\\$3" "\\$4" "\\$5" "\\$6" "\\$7"
+..
+.de EX		\" start example
+.ta 1i 2i 3i 4i 5i 6i
+.PP
+.RS 
+.PD 0
+.ft 5
+.nf
+..
+.de EE		\" end example
+.fi
+.ft
+.PD
+.RE
+.PP
+..
+.TH MEM 3
+.SH NAME
+mem \- fixed string routines
+.SH SYNOPSIS
+.EX
+#include <ast.h>
+
+void    mematoe(void* \fIout\fP, const void* \fIin\fP, size_t \fIn\fP);
+void*   memdup(const void* \fIbuf\fP, size_t \fIn\fP)
+void    memetoa(void* \fIout\fP, const void* \fIin\fP, size_t \fIn\fP);
+void*   memzero(void* \fIbuf\fP, size_t \fIn\fP);
+.EE
+.SH DESCRIPTION
+.L mematoe
+converts
+.I n
+ASCII characters in
+.I in
+to EBCDIC characters in
+.IR out .
+.I in
+and
+.I out
+may be the same.
+.PP
+.L memdup
+copies the 
+.I n
+byte buffer
+.I buf
+to a new location provided by
+.IR malloc (3)
+and returns a pointer to the new copy.
+0 is returned if
+.IR malloc (3)
+fails.
+.PP
+.L memetoa
+converts
+.I n
+EBCDIC characters in
+.I in
+to ASCII characters in
+.IR out .
+.I in
+and
+.I out
+may be the same.
+.PP
+.L memzero
+sets the first 
+.I n
+bytes in
+.I buf
+to 
+.IR 0 .
+.SH "SEE ALSO"
+Proposed Bell Laboratories ASCII/EBCDIC standard, April 16, 1979.
+.br
+str(3), vmalloc(3)