1.0010 DOES NOT EQUAL 1.0010
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I have a segment of code that is evaluating curfactor(sc) == 1.0010 as 0 when curfactor(sc) == 1.0010 (should evaluate as 1). Both numbers are exactly 1.0010. I checked the class of both numbers and they are both double. What on Earth is happening here?!
I should note that curfactor is an array of size 1x3, and is defined at the very beginning of the function. The expression that is being evaluated is nested within 2 other helper functions. Maybe it's a scope issue? In any case, someone's breath stinks here, and it's certainly not mine.
Image Analyst on 10 Nov 2011
Jeff: Read the FAQ and then come back: http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F Like you said, it IS a scope issue, and I'd recommend Scope mouthwash for you - it's an excellent mouthwash.
More Answers (2)
bym on 10 Nov 2011
did you check that they were exactly equal with a variable precision package like the symbolic toolbox?