MATLAB: Wrong values with greater than, equal and less than or equal functions

equalfaq6.1greater thanless than and equal

[EDIT: Tue May 17 14:40:06 UTC 2011 – Reformat – MKF]

When I use the greater than function, equal function and less than or equal function I obtain wrong values, for example:

>> 1.6-1.5>.1
ans =
     1
>> (1.6-1.5)>.1
ans =
     1
>> (1.6-1.5)>0.1
ans =
     1
>> eq((1.6-1.5),0.1)
ans =
     0
>> gt((1.6-1.5),0.1)
ans =
     1
>> le((1.6-1.5),0.1)
ans =
     0

Best Answer

http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F

Related Solutions

MATLAB: Finding odd and even values without functions

What about dividing?

while 1
    a = a/2;
    if abs(a-1) < 0.01        % if very close to '1'
        disp('even')
        break;
    elseif a < 1              % if smaller than '1'
        disp('odd')
        break;
    end
end

MATLAB: Less than or equal and greater than of equal operations

The vector you posted may not be showing the full precision of the values in it. If you calculated them (or imported them without looking at them), they may not be what they seem. See Why is 0.3 - 0.2 - 0.1 (or similar) not equal to zero? (link) for an explanation.

Best Answer

Related Solutions

MATLAB: Finding odd and even values without functions

MATLAB: Less than or equal and greater than of equal operations

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