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This queue is for tickets about the bignum CPAN distribution.

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The Basics
Id: 37625
Status: resolved
Priority: 0/
Queue: bignum
People
Owner: Nobody in particular
Requestors: bitcard [...] criis.eu
Cc:
AdminCc:
Bug Information
Severity: (no value)
Broken in: 0.17
Fixed in: (no value)

History Show all quoted text
  Fri Jul 11 15:36:03 2008 bitcard [...] criis.eu - Ticket created
Subject: Inconsistent runtimes
Hello, The runtimes for log on large integers are strange. I'm running perl 5.8.8 on Ubuntu 8.04 (2.6.24-16-generic). perl -Mbignum=v returns bignum v0.17 Math::BigInt v1.77 lib => Math::BigInt::Calc v0.47 Math::BigFloat v1.51 To reproduce: $ time perl -Mbignum -le 'log 2**2001' real 0m0.101s user 0m0.088s sys 0m0.012s $ time perl -Mbignum -le 'log 2**2000' real 0m6.248s user 0m6.232s sys 0m0.016s Regards Christian Riis
  Mon Feb 14 08:10:48 2011 peter.john.acklam [...] gmail.com - Correspondence added
The 'log' function (with 'bignum') is flawed. Occasionally it gives a wrong result. Please don't use it. This ticket is probably related to other tickets: https://rt.cpan.org/Ticket/Display.html?id=43924 https://rt.cpan.org/Ticket/Display.html?id=43692
  Mon Feb 14 08:10:49 2011 The RT System itself - Status changed from 'new' to 'open'
  Mon Sep 14 10:24:56 2015 peter.john.acklam [...] gmail.com - Correspondence added
Both the speed issue and the occasional wrong result from log() has been fixed.
  Mon Sep 14 10:24:57 2015 peter.john.acklam [...] gmail.com - Status changed from 'open' to 'resolved'