Comparing 2 float nombers

Hello I've some problem for comparing float nombers... a=123.123;

b=a-123;

b==0.123;

ans =

logical

0

...and whats the problem???

Tanx again...

Answer 1

[KALYAN ACHARJYA]

>> format long
>> a=123.123
a =
     1.231230000000000e+02
>> b=a-123
b =
   0.123000000000005
>> b==0.1230
ans =
     0

Read here more detail

Answer 2

[Image Analyst]

Try the function ismembertol().

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