From jamie@zfatal.cern.ch Wed Apr 1 20:31:25 1995 Received: from dxmint.cern.ch by dkuug.dk with SMTP id AA01591 (5.65c8/IDA-1.4.4j for ); Wed, 29 Mar 1995 18:32:06 +0200 Received: from zfatal.cern.ch by dxmint.cern.ch (5.65/DEC-Ultrix/4.3) id AA03332; Wed, 29 Mar 1995 18:31:27 +0200 Received: by zfatal.cern.ch (AIX 3.2/UCB 5.64/4.03) id AA28496; Wed, 29 Mar 1995 18:31:26 +0200 From: jamie@zfatal.cern.ch (Jamie Shiers) Message-Id: <9503291631.AA28496@zfatal.cern.ch> Subject: (SC22WG5.783) c preprossor for conditional compilation (fwd) To: SC22WG5@dkuug.dk Date: Wed, 29 Mar 1995 18:31:25 +0200 (METDST) Cc: jamie@zfatal.cern.ch (Jamie Shiers) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1453 X-Charset: ASCII X-Char-Esc: 29 > > Hi, > > I agree with Jamie that using the c preprossesor is a good idea. > However, my experience leaves me in doubt whether it is viable. > In particular when using the c preprossesor for fortran code > on the Alpha AXP running open VMS I had a rude shock... > all spaces where converted to a single space This is true with DEC C version 4. Apparently, it will be fixed in DEC C version 5. Meanwhile, you can get a free public domain C preprocessor from VXCERN::CERNVAX:[PRO.EXE]FPP.EXE VXCERN::CERNAXP:[PRO.EXE]FPP.EXE (it really is a C preprocessor, even if called FPP). > > I called DEC and was informed that the C standard defines > this behaviour for the preprocessor. Clearly this will > not work for fortran (the first 7 spaces get converted to one > space. A line like > character* 10 myvar > > gets converted to > character* 10 myvar > > Does anyone know for sure what the current C standard says > about the behaviour of the preprocessor regarding multiple spaces ? My guru tells me that this behaviour (i.e. collapsing blanks) is not required by the ANSI standard (but I guess is not prohibited either). Luckily, we also have the Free Software Foundation... > > Rochelle Lauer > Yale University High Energy Physics > > > You can find some information about our plans in http://asdwww.cern.ch/pl/technical/index.html although the information is somewhat preliminary and not very polished. -- Jamie