Python-2.7.3/Modules/python.c

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 1 /* Minimal main program -- everything is loaded from the library */
 2 
 3 #include "Python.h"
 4 
 5 #ifdef __FreeBSD__
 6 #include <floatingpoint.h>
 7 #endif
 8 
 9 int
10 main(int argc, char **argv)
11 {
12 	/* 754 requires that FP exceptions run in "no stop" mode by default,
13 	 * and until C vendors implement C99's ways to control FP exceptions,
14 	 * Python requires non-stop mode.  Alas, some platforms enable FP
15 	 * exceptions by default.  Here we disable them.
16 	 */
17 #ifdef __FreeBSD__
18 	fp_except_t m;
19 
20 	m = fpgetmask();
21 	fpsetmask(m & ~FP_X_OFL);
22 #endif
23 	return Py_Main(argc, argv);
24 }