Weird Result from Range

Weird Result from Range - Messages

#1 Posted: 2023/7/17 01:20:34
netsonicyxf

netsonicyxf

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For n=5, the result is right.

But for n=6, it's supposed to have 7 elements instead of 6

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#2 Posted: 2023/7/17 06:59:01
Jean Giraud

Jean Giraud

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Wrong way to discretize a range.
#3 Posted: 2023/7/17 08:09:12
Davide Carpi

Davide Carpi

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Wrote

For n=5, the result is right.

But for n=6, it's supposed to have 7 elements instead of 6



Probably something about precision of double type. In the second range if you add a 10^-14 to the uppper bound it return the expected vector.
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netsonicyxf 2023/7/17 09:41:00, Oscar Campo 2023/7/18 15:18:00
#4 Posted: 2023/7/17 10:40:35
Jean Giraud

Jean Giraud

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n even starts being exact ... n 10
n odd stops being exact ..... n 15
You have no control on numerical arithmetic.
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