Test of Approximately Equality
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Hello,
I have a value b and c. b and c are approximatly equal (b~c). They have +-5% difference.
I want to test of approximately equality..like this:
if b~c (with +-5% difference)
return something...
end
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Risposte (3)
Jan
il 17 Giu 2012
You only have to decide if it should be 5% of the first or the second argument. Then:
if abs(b - c) < 0.05 * b
or
if abs(b - c) < 0.05 * max(b, c)
or
if abs(b - c) < 0.05 * min(b, c)
or
if abs(b - c) < 0.05 * (b + c) * 0.5
2 Commenti
Greg Heath
il 18 Giu 2012
1. Try using "abs" on the RHS
2. Might also consider median(abs(b),abs(c))
Greg
Stephen Nagy
il 29 Dic 2017
Your desired goal isn't entirely clear, but depending on the outcome you seek, the functions "uniquetol" and some of its related functions might be helpful.
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