MATLAB: Why same matrix gives different answers

Question

My problem : I want to get index of all elements in matrix "B" whose value is equal to minimum value of matrix "B".

Using some computations I obtained Matrix "B",when I use the function file named "New_get_index.m" in same code it gives following answer.

Sub2 =
       1     1
       2     1

when I provide same matrix "B" as known matrix in file " test_2.m" and use function file named "New_get_index.m" It gives following answer.

Sub2 =
       1     1
       2     1
       1     2
       2     2

the code of both files are as follows,

1] code of " test_2.m":-

B=[ -0.1600   -0.1600   -0.0350 0.2150    0.5900    0.8400;
   -0.1600   -0.1600   -0.0350  0.2150    0.5900    0.8400;
   -0.0350   -0.0350    0.0900  0.3400    0.7150    0.9650;
    0.2150    0.2150    0.3400  0.5900    0.9650    1.2150;
    0.5900    0.5900    0.7150  0.9650    1.3400    1.5900;
    0.8400    0.8400    0.9650  1.2150    1.5900    1.8400]
Z=B
Sub2=New_get_index(Z)

2] code of "New_get_index.m" :-

function Sub2=New_get_index(Z)
B=Z
A=B(:)
C=min(A)
[r c] = find(A==C)
[D{1:ndims(B)}] = ind2sub(size(B), r(:)) ; 
Sub2 = cat(2,D{:})

Thanks.

Answer 1

After your computations of B, give the command at the command line

format long g

and then display B. You will almost certainly find that it is not exactly the same as the B you code into test_2.m