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Re: [Bug-apl] Overflow in LCM


From: Leslie S Satenstein
Subject: Re: [Bug-apl] Overflow in LCM
Date: Wed, 26 Apr 2017 16:36:48 +0000 (UTC)

Hi Kacper

I am getting different values for some of the calculations that you get and some that compare.  

I too am on Fedora 25, with C/CPP compiler GCC 6.3

I do not have access at this moment to GCC 7.x  and I suspect that the errors may not be in gnu-apl code, but with what the compiler produces.  Compiler optimization may be the culprit.


 
Regards

 Leslie
Leslie Satenstein
Montréal Québec, Canada




From: Kacper Gutowski <address@hidden>
To: address@hidden
Sent: Thursday, April 20, 2017 12:05 AM
Subject: [Bug-apl] Overflow in LCM

Hi,
There are overflows in least common multiple function:

      2028259601 ∧ 9094863431
¯585
      2028259601 ∧ 9094863431.0
¯585
      2028259601 ∧ 9094863431J0
¯1.844674407E19


-k



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