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Re: How to simulate C style integer division?

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From Matt Wheeler <m@funkyhat.org>
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Subject Re: How to simulate C style integer division?
Date Fri, 22 Jan 2016 00:51:21 +0000
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On 21 January 2016 at 21:17, Marko Rauhamaa <marko@pacujo.net> wrote:
> Well, then there's:
>
>     def intdiv(a, b):
>         return int(a / b)

That depends on how accurate you need it to be

>>> def intdiv(a, b):
...  return a//b if (a < 0) == (b < 0) else -(-a//b)
...
>>> num = 3**171
>>> num
3870210234510307998744588107535211184800325224934979257430349324033792477926791547
>>> num2 = 4**80
>>> num2
1461501637330902918203684832716283019655932542976
>>> intdiv(num, num2)
2648105301871818722187687529062555
>>> int(num/num2)
2648105301871818477801931416797184



-- 
Matt Wheeler
http://funkyh.at

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Thread

Re: How to simulate C style integer division? Ben Finney <ben+python@benfinney.id.au> - 2016-01-21 20:11 +1100
  Re: How to simulate C style integer division? Paul Rubin <no.email@nospam.invalid> - 2016-01-21 01:43 -0800
    Re: How to simulate C style integer division? Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-01-21 11:58 +0200
  Re: How to simulate C style integer division? Steven D'Aprano <steve@pearwood.info> - 2016-01-21 23:42 +1100
    Re: How to simulate C style integer division? Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-01-21 16:00 +0200
      Re: How to simulate C style integer division? Marko Rauhamaa <marko@pacujo.net> - 2016-01-21 16:31 +0200
        Re: How to simulate C style integer division? Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-01-21 16:48 +0200
        Re: How to simulate C style integer division? Random832 <random832@fastmail.com> - 2016-01-21 14:52 -0500
          Re: How to simulate C style integer division? Marko Rauhamaa <marko@pacujo.net> - 2016-01-21 23:17 +0200
            Re: How to simulate C style integer division? Matt Wheeler <m@funkyhat.org> - 2016-01-22 00:51 +0000
      Re: How to simulate C style integer division? Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2016-01-21 15:22 +0100

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