Re: Perl can't make some easy arithmetics :(

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Re^2: Perl can't make some easy arithmetics :( by LanX (Saint) on Oct 24, 2014 at 20:58 UTC
Could it be you are on a 64 bit system? Perl automatically switches to floating point representation˛ if the integer range is exceededš. update Oh yes you did an update showing the bits :) Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :)} š) `231 < 900000000000000009 < 263` ˛) IIRC does Perl's FP mantissa have 56 bits so `7.2e+16 ~~ 2**56 < 900000000000000009 ~~ 9e+17`	[reply] [d/l] [select]
Re^3: Perl can't make some easy arithmetics :( by no_slogan (Deacon) on Oct 24, 2014 at 22:33 UTC
It's 52 bits, not 56. Double-precision floating-point format #pedantry	[reply]
Re^4: Perl can't make some easy arithmetics :( by ikegami (Patriarch) on Oct 29, 2014 at 13:32 UTC
For a total precision of 53 bits because of the implied leading `1`.	[reply] [d/l]
Re^2: Perl can't make some easy arithmetics :( by rsFalse (Chaplain) on Oct 24, 2014 at 21:05 UTC
I used ideone.com for calculating. It says version is 5.16.2	[reply]
Re^3: Perl can't make some easy arithmetics :( by Loops (Curate) on Oct 24, 2014 at 21:19 UTC
Okay, ideone.com is running on 32bit, and that is what you're running into. On my 64bit system with this input: 9 7 900000000000000009 900000000000000007 99223372036854775810 99223372036854775808 The output is: 2 2 2 2 2 2 2 2 0 0 0 2	[reply]
Re^4: Perl can't make some easy arithmetics :( by rsFalse (Chaplain) on Oct 24, 2014 at 21:31 UTC
Seems that there is a problem with magic: if use bigint and take some string, Perl doesn't convert correctly string to bigint?	[reply]
Re^5: Perl can't make some easy arithmetics :( by Loops (Curate) on Oct 24, 2014 at 22:03 UTC
Re^6: Perl can't make some easy arithmetics :( by no_slogan (Deacon) on Oct 24, 2014 at 22:19 UTC
Re^6: Perl can't make some easy arithmetics :( by LanX (Saint) on Oct 24, 2014 at 22:21 UTC
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Re: Perl can't make some easy arithmetics :(

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