well, 5^12 is in the range of the value represented by a float number. but at
this value, the precision is more than 1, so it's can be computed directlly,
but not with single iteration.
I guess wikipedia will explain it in more detail than what I can do in a mail.
https://en.wikipedia.org/wiki/Floating-point_arithmetic
more specifically :
https://en.wikipedia.org/wiki/Floating-point_arithmetic#Range_of_floating-point_numbers
https://en.wikipedia.org/wiki/Floating-point_arithmetic#Accuracy_problems
cheers
c
Le 26/04/2018 à 09:57, hans w. koch a écrit :
thanks, cyrille,
but why does the computation for 5pow12 [print start] in my patch then still
produce 2.44141e+08?
or 5pow12 - 4pow12 work?
(see attached)
cheers hans
Am 26.04.2018 um 09:46 schrieb cyrille henry <[email protected]>:
hello,
this is not a probem with until, but a problem of big number precision.
see attachment.
cheers
c
Le 26/04/2018 à 09:30, hans w. koch a écrit :
dear miller,
all
for a project i am working with very high number of iterations.
but it seems i´ve literally hit a ceiling with [until]
for 4pow12 iterations it performs fine.
but 5pow12 doesn´t.
feeding it into a counter, 5pow12 produces the same result as 4pow12.
attached a small patch to demonstrate.
is this limitation by purpose?
(i have a workaround not using [until], but wanted to make sure i didn´t
overlook something)
thanks
hans
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