using ismembertol contradictory results

when I write this I get the following results

>>ismembertol(117 , 115 , 1e-2)

ans =

     0

and when I write this I get the following results

>> ismembertol(117 ,[ 115 366], 1e-2)

ans =

     1

for me the results are contradictory maybe it is because i do not understand properly the function

Answer 1

[Jan]

According to the doc s the tolerance is applied as:

abs(u-v) <= tol*max(abs([A(:);B(:)]))

In your case this is:

abs(117 - 115) <= 1e-2 * max(abs([117; 115])))
2 <= 1e-2 * 117   % ==> FALSE

But when the maximum of the values is 366 you get:

abs(117 - 115) <= 1e-2 * max(abs([117; 115, 336])))
2 <= 1e-2 * 336   % ==> TRUE

This means, that the results are as explained in the doc ismembertol: relative to the largest input value.