Hello, NZMATH is a Python based number theory oriented calculation system developed by Tokyo Metropolitan University. The URL is http://tnt.math.metro-u.ac.jp/nzmath/.
Using NZMATH, I encounterd a bug of big integer manipulation. IronPython ============================ C:\IronPython-2604>ipy IronPython 1.0.2411 on .NET 2.0.50727.42 Copyright (c) Microsoft Corporation. All rights reserved. >>> import sys >>> sys.path.append(r'C:\Python24\Lib') >>> sys.path.append(r'C:\Python24\Lib\site-packages') >>> from nzmath import prime >>> prime.nextPrime(256) 257 >>> nx = sys.maxint >>> prime.nextPrime(nx*nx) Traceback (most recent call last): File , line 0, in <stdin>##115 File C:\Python24\Lib\site-packages\nzmath\prime.py, line 158, in nextPrime File C:\Python24\Lib\site-packages\nzmath\prime.py, line 206, in primeq File C:\Python24\Lib\site-packages\nzmath\prime.py, line 188, in smallSpsp File C:\Python24\Lib\site-packages\nzmath\prime.py, line 41, in spsp ValueError: value too big >>> prime.nextPrime(nx) ## Seems going into infinite loop. CPython ============================ C:\IronPython-2604>python Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import sys >>> from nzmath import prime >>> nx = sys.maxint >>> prime.nextPrime(nx*nx) 4611686014132420667L >>> prime.nextPrime(nx) 2147483659L >>> Regards, _______________________________________________ users mailing list [email protected] http://lists.ironpython.com/listinfo.cgi/users-ironpython.com
