Greater than is giving inconsistent answer

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Amanda Beatty
Amanda Beatty 2021-9-9
编辑： Amanda Beatty 2021-9-9
I am running two (slightly different) matalb programs in two different windows and getting incosistent answers on a very simple "greater than" equation. It is baffling me. 0.0417 is SOMETIMES > 0.0417, but not other times.
What am I missing here?
Window #1
Window #2

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Image Analyst
Image Analyst 2021-9-9
They're probably off in the 15th decimal place or something. Try this
format long
If that doesn't work try
fprintf('%30f\n', ans2);
There should be a difference somewhere. See the FAQ:
https://matlab.fandom.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F
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Amanda Beatty
Amanda Beatty 2021-9-9
编辑：Amanda Beatty 2021-9-9
They're still identical with format long and the fprintf you suggested, but using
sprintf('%20.18f\n',ans2)
from the link you posteds shows that they are different on the 17th decimal. Thank you! It looks like that originates from an interp1 calculation a while back in the code.

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