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* Include/classobject.h, Objects/classobject.c, Python/ceval.c:

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entirely redone operator overloading.  The rules for class
	instances are now much more relaxed than for other built-in types
	(whose coerce must still return two objects of the same type)

	* Objects/floatobject.c: add overflow check when converting float
	to int and implement truncation towards zero using ceil/float

	* Objects/longobject.c: change ValueError to OverflowError when
	converting to int

	* Objects/rangeobject.c: modernized

	* Objects/stringobject.c: use HAVE_LIMITS instead of __STDC__

	* Objects/xxobject.c: changed to use new style (not finished?)
This commit is contained in:
Guido van Rossum 1994-09-28 15:51:32 +00:00
parent 2929527aed
commit 03093a248d
6 changed files with 220 additions and 205 deletions
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19
Objects/floatobject.c
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@ -47,6 +47,18 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#define CHECK(x) /* Don't know how to check */
#endif
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#ifndef LONG_MAX
#define LONG_MAX 0X7FFFFFFFL
#endif
#ifndef LONG_MIN
#define LONG_MIN (-LONG_MAX-1)
#endif
#ifndef macintosh
extern double fmod PROTO((double, double));
extern double pow PROTO((double, double));
@ -397,8 +409,11 @@ float_int(v)
object *v;
{
double x = getfloatvalue(v);
/* XXX should check for overflow */
/* XXX should define how we round */
if (x < 0 ? (x = ceil(x)) < (double)LONG_MIN
: (x = floor(x)) > (double)LONG_MAX) {
err_setstr(OverflowError, "float to large to convert");
return NULL;
}
return newintobject((long)x);
}