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+?RCS: $Id: bitpbyte.U,v 3.0.1.1 1994/10/29 16:02:54 ram Exp $
+?RCS:
+?RCS: Copyright (c) 1991-1993, Raphael Manfredi
+?RCS:
+?RCS: You may redistribute only under the terms of the Artistic Licence,
+?RCS: as specified in the README file that comes with the distribution.
+?RCS: You may reuse parts of this distribution only within the terms of
+?RCS: that same Artistic Licence; a copy of which may be found at the root
+?RCS: of the source tree for dist 3.0.
+?RCS:
+?RCS: $Log: bitpbyte.U,v $
+?RCS: Revision 3.0.1.1 1994/10/29 16:02:54 ram
+?RCS: patch36: added ?F: line for metalint file checking
+?RCS:
+?RCS: Revision 3.0 1993/08/18 12:05:27 ram
+?RCS: Baseline for dist 3.0 netwide release.
+?RCS:
+?MAKE:bitpbyte: cat rm Myread +cc +ccflags
+?MAKE: -pick add $@ %<
+?S:bitpbyte:
+?S: This variable contains the value of the BITS_PER_BYTE symbol, which
+?S: indicates to the C program how many bits there are in a byte.
+?S:.
+?C:BITS_PER_BYTE:
+?C: This symbol contains the number of bits in a byte, so that the C
+?C: preprocessor can make decisions based on it.
+?C:.
+?H:#define BITS_PER_BYTE $bitpbyte /**/
+?H:.
+?F:!try
+: check for length of byte
+echo " "
+case "$bitpbyte" in
+'')
+ echo "Checking to see how many bits there are in a byte..." >&4
+ $cat >try.c <<'EOCP'
+#include <stdio.h>
+?X: Standard C requires a macro CHAR_BIT in <limits.h>
+#ifdef __STDC__
+#include <limits.h>
+#ifndef CHAR_BIT
+#define CHAR_BIT 8
+#endif
+#ifndef BITSPERBYTE
+#define BITSPERBYTE CHAR_BIT
+#endif
+#else
+?X: On non standard C, try with <values.h>
+#include <values.h>
+#ifndef BITSPERBYTE
+#define BITSPERBYTE 8
+#endif
+#endif
+main()
+{
+ printf("%d\n", BITSPERBYTE);
+}
+EOCP
+ if $cc $ccflags try.c -o try >/dev/null 2>&1 ; then
+ dflt=`./try`
+ else
+ dflt='8'
+ echo "(I can't seem to compile the test program. Guessing...)"
+ fi
+ ;;
+*)
+ dflt="$bitpbyte"
+ ;;
+esac
+rp="What is the length of a byte (in bits)?"
+. ./myread
+bitpbyte="$ans"
+$rm -f try.c try
+