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* Changed all copyright messages to include 1993.

Browse source 
* Stubs for faster implementation of local variables (not yet finished)
* Added function name to code object.  Print it for code and function
  objects.  THIS MAKES THE .PYC FILE FORMAT INCOMPATIBLE (the version
  number has changed accordingly)
* Print address of self for built-in methods
* New internal functions getattro and setattro (getattr/setattr with
  string object arg)
* Replaced "dictobject" with more powerful "mappingobject"
* New per-type functio tp_hash to implement arbitrary object hashing,
  and hashobject() to interface to it
* Added built-in functions hash(v) and hasattr(v, 'name')
* classobject: made some functions static that accidentally weren't;
  added __hash__ special instance method to implement hash()
* Added proper comparison for built-in methods and functions
This commit is contained in:
Guido van Rossum 1993-03-29 10:43:31 +00:00
parent 4b1302bd1d
commit 9bfef44d97
97 changed files with 559 additions and 246 deletions
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33
Objects/floatobject.c
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@ -145,6 +145,38 @@ float_compare(v, w)
return (i < j) ? -1 : (i > j) ? 1 : 0;
}
static long
float_hash(v)
floatobject *v;
{
double intpart, fractpart;
int expo;
long x;
/* This is designed so that Python numbers with the same
value hash to the same value, otherwise comparisons
of mapping keys will turn out weird */
fractpart = modf(v->ob_fval, &intpart);
if (fractpart == 0.0) {
if (intpart > 0x7fffffffL || -intpart > 0x7fffffffL) {
/* Convert to long int and use its hash... */
object *w = dnewlongobject(v->ob_fval);
if (w == NULL)
return -1;
x = hashobject(w);
DECREF(w);
return x;
}
x = (long)intpart;
}
else {
fractpart = frexp(fractpart, &expo);
x = (long) (intpart + fractpart) ^ expo; /* Rather arbitrary */
}
if (x == -1)
x = -2;
return x;
}
static object *
float_add(v, w)
floatobject *v;
@ -378,4 +410,5 @@ typeobject Floattype = {
&float_as_number, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
float_hash, /*tp_hash */
};