#!/bin/sh
# This is a shar archive.
# The rest of this file is a shell script which will extract:
#
# 3_10.c 3_10ex.c makefile
#
# To extract the files from this shell archive file simply
# create a directory for this file, move the archive file
# to it and enter the command
#
#	sh filename
# 
# The files will be extracted automatically.
# Note: Do not use csh.
#
# Archive created: Mon Jul 30 22:59:48 EDT 1990
#
echo x - 3_10.c
sed 's/^X//' > 3_10.c << '!EOF!'
/* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
/* The C++ Answer Book */
/* Tony Hansen */
/* All rights reserved. */
// rewrite of Duff's Device using memcpy()
extern char *memcpy(void*, const void*, int);

inline void send(register* to,
    register* from,
    register count)
{
    (void) memcpy(to, from, count * sizeof(int));
}
!EOF!
ls -l 3_10.c
echo x - 3_10ex.c
sed 's/^X//' > 3_10ex.c << '!EOF!'
/* Copyright (c) 1990 by AT&T Bell Telephone Laboratories, Incorporated. */
/* The C++ Answer Book */
/* Tony Hansen */
/* All rights reserved. */
void send(register* to, register* from, register count)
// Duff's device. Helpful comment deliberately deleted.
{
    register n=(count+7)/8;
    switch(count%8) {
	case 0: do {	*to++ = *from++;
	case 7:		*to++ = *from++;
	case 6:		*to++ = *from++;
	case 5:		*to++ = *from++;
	case 4:		*to++ = *from++;
	case 3:		*to++ = *from++;
	case 2:		*to++ = *from++;
	case 1:		*to++ = *from++;
		} while (--n>0);
	}
}
!EOF!
ls -l 3_10ex.c
echo x - makefile
sed 's/^X//' > makefile << '!EOF!'
CC= CC -I. -I../../CC
all: 3_10

3_10: 3_10.c
	$(CC) -c 3_10.c

test: all
	echo tests done
!EOF!
ls -l makefile
# The following exit is to ensure that extra garbage 
# after the end of the shar file will be ignored.
exit 0