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How do I determine if my python shell is executing in 32bit or 64bit?
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One way is to look at sys.maxsize as documented here:
$ python-32 -c 'import sys;print("%x" % sys.maxsize, sys.maxsize > 2**32)'
('7fffffff', False)
$ python-64 -c 'import sys;print("%x" % sys.maxsize, sys.maxsize > 2**32)'
('7fffffffffffffff', True)
sys.maxsize was introduced in...
C Macro definition to determine big endian or little endian machine?
... supporting arbitrary byte orders, ready to be put into a file called order32.h:
#ifndef ORDER32_H
#define ORDER32_H
#include <limits.h>
#include <stdint.h>
#if CHAR_BIT != 8
#error "unsupported char size"
#endif
enum
{
O32_LITTLE_ENDIAN = 0x03020100ul,
O32_BIG_ENDIAN = 0x000...
How to avoid overflow in expr. A * B - C * D
...ementing a kind of long multiplication (i.e. separating each number to two 32bit halves and performing the multiplication as below:
(R1 + R2 * 2^32 + R3 * 2^64 + R4 * 2^96) = R = A*B = (A1 + A2 * 2^32) * (B1 + B2 * 2^32)
R1 = (A1*B1) % 2^32
R2 = ((A1*B1) / 2^32 + (A1*B2) % 2^32 + (A2*B1) % 2^32) %...
Hash function that produces short hashes?
...rong against intentional modification, I've found an algorithm called adler32 that produces pretty short (~8 character) results. Choose it from the dropdown here to try it out:
http://www.sha1-online.com/
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Should I use Python 32bit or Python 64bit
...nstallation. Must I use Python 64bit? What are the differences between the 32bit and 64bit Python versions anyway? Do different Python packages (such as south, django, mysqldb etc) support only 32bit/64bit?
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How does one generate a random number in Apple's Swift language?
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answered Jun 3 '14 at 4:32
Catfish_ManCatfish_Man
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Which icon sizes should my Windows application's icon include?
.../7). According to the Vista UI Guidelines , the standard sizes are 16x16, 32x32, 48x48, 256x256 (XP standard sizes do not include the 256x256 icon). In addition to those sizes, I also have 96x96 and 128x128 (and could create more).
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Fastest hash for non-cryptographic uses?
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CRC32 is pretty fast and there's a function for it: http://www.php.net/manual/en/function.crc32.php
But you should be aware that CRC32 will have more collisions than MD5 or even SHA-1 hashes, simply because of the reduced lengt...
Cannot run Eclipse; JVM terminated. Exit code=13
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It may just be the way the error shows (and not how it is written in the eclipse.ini file), but...
C++ convert hex string to signed integer
I want to convert a hex string to a 32 bit signed integer in C++.
9 Answers
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