range of int() type.

[KraftDiner]

What is the range of a variable of type int()

eg:
i = int()
print i.max() # 0xFFFFFFFF
print i.min() # 0x00000000

is it a signed 16 bit or 32 bit or is it unsigned 16 or 32...
I've noticed that it can be incremented into a new class of type
long...

[Simon Forman]

Re: range of int() type.

KraftDiner wrote:

What is the range of a variable of type int()
>
eg:
i = int()
print i.max() # 0xFFFFFFFF
print i.min() # 0x00000000
>
is it a signed 16 bit or 32 bit or is it unsigned 16 or 32...
I've noticed that it can be incremented into a new class of type
long...

|>import sys
|>sys.maxint
2147483647

>From the sys module docs:

maxint
The largest positive integer supported by Python's regular integer
type. This is at least 2**31-1. The largest negative integer is
-maxint-1 -- the asymmetry results from the use of 2's complement
binary arithmetic.

Peace,
~Simon

P.S. ints and longs are becoming unified soon.

[KraftDiner]

Re: range of int() type.


Simon Forman wrote:

KraftDiner wrote:

What is the range of a variable of type int()

eg:
i = int()
print i.max() # 0xFFFFFFFF
print i.min() # 0x00000000

is it a signed 16 bit or 32 bit or is it unsigned 16 or 32...
I've noticed that it can be incremented into a new class of type
long...

>
|>import sys
|>sys.maxint
2147483647
>

So what type / class should one use to represent a 16 bit integers
(signed or unsigned)?

From the sys module docs:

maxint
The largest positive integer supported by Python's regular integer
type. This is at least 2**31-1. The largest negative integer is
-maxint-1 -- the asymmetry results from the use of 2's complement
binary arithmetic.
>
Peace,
~Simon
>
P.S. ints and longs are becoming unified soon.

[Gabriel Genellina]

Re: range of int() type.

At Wednesday 23/8/2006 18:53, KraftDiner wrote:

|>import sys
|>sys.maxint
2147483647

>
>So what type / class should one use to represent a 16 bit integers
>(signed or unsigned)?

Plain int.
If you need the overflow at 32K/64K, try: x & 0xFFFF



Gabriel Genellina
Softlab SRL





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[Terry Reedy]

Re: range of int() type.


"KraftDiner " <bobrien18@yaho o.comwrote in message
news:1156370039 .116224.154430@ 75g2000cwc.goog legroups.com...

>
So what type / class should one use to represent a 16 bit integers
(signed or unsigned)?

For most purposes, Python just has integers, with 'small' ones (depending
on the machine) handled more efficiently. For special purposes, you may
want to use the array or struct modules.

tjr

[KraftDiner]

Re: range of int() type.


Terry Reedy wrote:

"KraftDiner " <bobrien18@yaho o.comwrote in message
news:1156370039 .116224.154430@ 75g2000cwc.goog legroups.com...

So what type / class should one use to represent a 16 bit integers
(signed or unsigned)?

>
For most purposes, Python just has integers, with 'small' ones (depending
on the machine) handled more efficiently. For special purposes, you may
want to use the array or struct modules.
>
tjr

Ok so the bottom line is..
if I have two arrays...

a = array.array('L' )
a.append(65536L )
b = array.array('H' )
b.append(a[0])

I will get the error:
File "<stdin>", line 1, in ?
OverflowError: unsigned short is greater than maximum

This is obvious... but how do I crop off the high order bits if
necessary?
a[0]&0xFFFF ?

[Felipe Almeida Lessa]

Re: range of int() type.

23 Aug 2006 17:28:48 -0700, KraftDiner <bobrien18@yaho o.com>:

This is obvious... but how do I crop off the high order bits if
necessary?
a[0]&0xFFFF ?

min(a[0], 0xFFFF) ?

--
Felipe.