From @masak

<masak> r​: say 6103515625/5; say ((((6103515625/5) * 4 + 123327057) **
2) % 6103515625); say (((1220703125 * 4 + 123327057) ** 2) %
6103515625)
<camelia> rakudo-{parrot,moar} c5dcdf​: OUTPUT«1220703125␤0␤6103515624␤»
<masak> ok -- between those three expressions, something is quite wrong.
<masak> note that the third is just the second but with the evaluated
result from the first inserted.
<masak> the second and the third should show up the same.
* masak submits rakudobug
<FROGGS_> m​: say ((((6103515625 / 5) * 4 + 123327057) ** 2) % 6103515625)
<camelia> rakudo-moar c5dcdf​: OUTPUT«0␤»
<FROGGS_> m​: say ((((6103515625 div 5) * 4 + 123327057) ** 2) % 6103515625)
<camelia> rakudo-moar c5dcdf​: OUTPUT«6103515624␤»
<masak> FROGGS_​: you're implying I'm suffering from bignum/rounding effects?
<FROGGS_> I'm implying nothing atm
< masak> anyway, FROGGS_++ for interesting data point. that goes in
the ticket, too.
<FROGGS_> m​: say ((((6103515625 / 5).Int * 4 + 123327057) ** 2) % 6103515625)
<camelia> rakudo-moar c5dcdf​: OUTPUT«6103515624␤»
<FROGGS_> m​: say ((((6103515625 div 5).Num * 4 + 123327057) ** 2) % 6103515625)
<camelia> rakudo-moar c5dcdf​: OUTPUT«0␤»
<FROGGS_> :o)

From @coke

On Fri Jan 09 06​:47​:29 2015, masak wrote​:

<masak> r​: say 6103515625/5; say ((((6103515625/5) * 4 + 123327057) **
2) % 6103515625); say (((1220703125 * 4 + 123327057) ** 2) %
6103515625)
<camelia> rakudo-{parrot,moar} c5dcdf​:
OUTPUT«1220703125␤0␤6103515624␤»
<masak> ok -- between those three expressions, something is quite
wrong.
<masak> note that the third is just the second but with the evaluated
result from the first inserted.
<masak> the second and the third should show up the same.
* masak submits rakudobug
<FROGGS_> m​: say ((((6103515625 / 5) * 4 + 123327057) ** 2) %
6103515625)
<camelia> rakudo-moar c5dcdf​: OUTPUT«0␤»
<FROGGS_> m​: say ((((6103515625 div 5) * 4 + 123327057) ** 2) %
6103515625)
<camelia> rakudo-moar c5dcdf​: OUTPUT«6103515624␤»
<masak> FROGGS_​: you're implying I'm suffering from bignum/rounding
effects?
<FROGGS_> I'm implying nothing atm
< masak> anyway, FROGGS_++ for interesting data point. that goes in
the ticket, too.
<FROGGS_> m​: say ((((6103515625 / 5).Int * 4 + 123327057) ** 2) %
6103515625)
<camelia> rakudo-moar c5dcdf​: OUTPUT«6103515624␤»
<FROGGS_> m​: say ((((6103515625 div 5).Num * 4 + 123327057) ** 2) %
6103515625)
<camelia> rakudo-moar c5dcdf​: OUTPUT«0␤»
<FROGGS_> :o)

<masak> the second and the third should show up the same.

$ ./perl6 rt123570.p6
1220703125
6103515624
6103515624

Now they do. Added test to integration/weird-errors.t, closing ticket.

--
Will "Coke" Coleda

The RT System itself - Status changed from 'new' to 'open'

@coke - Status changed from 'open' to 'resolved'