[Python-checkins] python/dist/src/Modules datetimemodule.c,NONE,1.1

[tim_one@users.sourceforge.net]

Update of /cvsroot/python/python/dist/src/Modules
In directory sc8-pr-cvs1:/tmp/cvs-serv26267/python/Modules

Added Files:
	datetimemodule.c 
Log Message:
datetime escapes the sandbox.  The Windows build is all set.  I leave it
to others to argue about how to build it on other platforms (on Windows
it's in its own DLL).


--- NEW FILE: datetimemodule.c ---
/*  C implementation for the date/time type documented at
 *  http://www.zope.org/Members/fdrake/DateTimeWiki/FrontPage
 */

#include "Python.h"
#include "modsupport.h"
#include "structmember.h"

#include <time.h>

#include "datetime.h"

/* We require that C int be at least 32 bits, and use int virtually
 * everywhere.  In just a few cases we use a temp long, where a Python
 * API returns a C long.  In such cases, we have to ensure that the
 * final result fits in a C int (this can be an issue on 64-bit boxes).
 */
#if SIZEOF_INT < 4
#	error "datetime.c requires that C int have at least 32 bits"
[...5036 lines suppressed...]
	assert(DI100Y == days_before_year(100+1));

	us_per_us = PyInt_FromLong(1);
	us_per_ms = PyInt_FromLong(1000);
	us_per_second = PyInt_FromLong(1000000);
	us_per_minute = PyInt_FromLong(60000000);
	seconds_per_day = PyInt_FromLong(24 * 3600);
	if (us_per_us == NULL || us_per_ms == NULL || us_per_second == NULL ||
	    us_per_minute == NULL || seconds_per_day == NULL)
		return;

	/* The rest are too big for 32-bit ints, but even
	 * us_per_week fits in 40 bits, so doubles should be exact.
	 */
	us_per_hour = PyLong_FromDouble(3600000000.0);
	us_per_day = PyLong_FromDouble(86400000000.0);
	us_per_week = PyLong_FromDouble(604800000000.0);
	if (us_per_hour == NULL || us_per_day == NULL || us_per_week == NULL)
		return;
}