I have this weird case where I am calculating cosine of a bunch of numbers, one of which is 0.5 * pi (ie. 180 degrees), which should be equal to 0 and that’s what it says. But when I check the number if it is equal to 0 I get false (see first line in the panels) What am I missing? [not_zero] not…

Panels aren’t reliable for seeing the complete float. [image]

Oh. So cosine doesn’t calculate to proper 0. Then why display values at “0.5 * pi”, but then not actually use pi properly!? Guess I’ll have to round to some significant numbers.

[image] Equal to Zero Grasshopper Why wait? sunglasses [isEqual_cluster] [isEqual] isEqual.gh (4.3 KB) [isEqual_cluster] [isEqual] isEqual.gh (4.3 KB)

[image] Equals component makes no sense. I call this a bug Grasshopper 0.1 = 0.1 = False? [image] I’ve seen these topics explaining the problem: https://discourse.mcneel.com/t/equals-component-not-working/53254?u=siemen https://discourse.mcneel.com/t/strange-behavior-…

Welcome to the world of floating point arithmetic [image] Mesh.Vertices accuracy seems wrong, why? Scripting From the Python floating point tutorial perhaps my favourite bit is this: print ( 0.1 + 0.1 + 0.1 == 0.3) Just paste that in EditPythonEditor and run it slight_s…

0 is not equal 0?

Grasshopper

siemen December 14, 2020, 4:56pm 5

2 Likes

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0 is not equal 0?

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