[Python-3000-checkins] r59457 - in python/branches/py3k: Include/floatobject.h Lib/test/test_float.py Makefile.pre.in Misc/NEWS Objects/doubledigits.c Objects/floatobject.c PCbuild/pythoncore.vcproj PCbuild8/pythoncore/pythoncore.vcproj PCbuild9/pythoncore.vcproj

[Christian Heimes]

Neil Schemenauer wrote:
> In gmane.comp.python.python-3000.cvs, you wrote:
>> Added: python/branches/py3k/Objects/doubledigits.c
>> ==============================================================================
>> --- (empty file)
>> +++ python/branches/py3k/Objects/doubledigits.c	Mon Dec 10 23:19:17 2007
>> @@ -0,0 +1,601 @@
>> +/* Free-format floating point printer
>> + * 
>> + * Based on "Floating-Point Printer Sample Code", by Robert G. Burger,
>> + * http://www.cs.indiana.edu/~burger/fp/index.html
>> + */
>> +
>> +#include "Python.h"
>> +
>> +#if defined(__alpha) || defined(__i386) || defined(_M_IX86) || defined(_M_X64) || defined(_M_IA64)
>> +#define LITTLE_ENDIAN_IEEE_DOUBLE
>> +#elif !(defined(__ppc__) || defined(sparc) || defined(__sgi) || defined(_IBMR2) || defined(hpux))
>> +#error unknown machine type
>> +#endif
> 
> gcc -pthread -c -fno-strict-aliasing -DNDEBUG -g -O3 -Wall -Wstrict-prototypes  -I. -IInclude -I../Include   -DPy_BUILD_CORE -o Objects/doubledigits.o ../Objects/doubledigits.c
> ../Objects/doubledigits.c:12:2: error: #error unknown machine type
> make: *** [Objects/doubledigits.o] Error 1
> 
> That's on a Debian Linux x86_64 machine.  That code looks like a
> portability nightmare.  Maybe a autoconfig test would work better
> (e.g. put a known number into a memory and inspect it).

Yeah, I hit the same spot when I tried to compile the code for the Win
x64 platform. Do you have experience with autoconf and can you come up
with a test?

Christian