diff options
| author | rmanfredi <rmanfredi@190e5f8e-a817-0410-acf6-e9863daed9af> | 2006-08-24 12:32:52 +0000 |
|---|---|---|
| committer | rmanfredi <rmanfredi@190e5f8e-a817-0410-acf6-e9863daed9af> | 2006-08-24 12:32:52 +0000 |
| commit | 8bfc5756fb68e0b13d7e7c0073ad5b9a4790d1b6 (patch) | |
| tree | dee05e98bc53766d609ef2a3a07a5672627d812c /mcon/U/alignbytes.U | |
Moving project to sourceforge.
git-svn-id: https://dist.svn.sourceforge.net/svnroot/dist/trunk/dist@1 190e5f8e-a817-0410-acf6-e9863daed9af
Diffstat (limited to 'mcon/U/alignbytes.U')
| -rw-r--r-- | mcon/U/alignbytes.U | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/mcon/U/alignbytes.U b/mcon/U/alignbytes.U new file mode 100644 index 0000000..f31ec80 --- /dev/null +++ b/mcon/U/alignbytes.U @@ -0,0 +1,64 @@ +?RCS: $Id$ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, 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 4.0. +?RCS: +?RCS: $Log: alignbytes.U,v $ +?RCS: Revision 3.0.1.2 1994/10/29 16:02:28 ram +?RCS: patch36: added ?F: line for metalint file checking +?RCS: +?RCS: Revision 3.0.1.1 1994/05/06 14:25:20 ram +?RCS: patch23: avoid ALIGNBYTES, since it conflicts on NetBSD +?RCS: +?RCS: Revision 3.0 1993/08/18 12:05:23 ram +?RCS: Baseline for dist 3.0 netwide release. +?RCS: +?MAKE:alignbytes: Myread cat cc ccflags rm +?MAKE: -pick add $@ %< +?S:alignbytes: +?S: This variable holds the number of bytes required to align a +?S: double. Usual values are 2, 4 and 8. +?S:. +?X: This used to be called ALIGNBYTES, but that conflicts with +?X: <machines/param.h> in NetBSD. +?C:MEM_ALIGNBYTES (ALIGNBYTES): +?C: This symbol contains the number of bytes required to align a +?C: double. Usual values are 2, 4 and 8. +?C:. +?H:#define MEM_ALIGNBYTES $alignbytes /**/ +?H:. +?F:!try +: check for alignment requirements +echo " " +case "$alignbytes" in +'') echo "Checking alignment constraints..." >&4 + $cat >try.c <<'EOCP' +struct foobar { + char foo; + double bar; +} try; +int main() +{ + printf("%d\n", (char *)&try.bar - (char *)&try.foo); +} +EOCP + if $cc $ccflags try.c -o try >/dev/null 2>&1; then + dflt=`./try` + else + dflt='8' + echo "(I can't seem to compile the test program...)" + fi + ;; +*) dflt="$alignbytes" + ;; +esac +rp="Doubles must be aligned on a how-many-byte boundary?" +. ./myread +alignbytes="$ans" +$rm -f try.c try + |