How to use the function maxloc to find all the max locations

[cepheid]

For example we have the matrix

! A is the array  |  4  9  8 -8|
!                    |  2  1 -1  5|
!                    |  9  4 -1  9|
!                    | -7  5  7 -3| 

when we use maxloc(A), we get 3,1
but there has the other places that the value is 9

so how could we find the all the max value locations?

[TimP]

Repeat maxloc on the section of the array past the first result. If another equal value found and not last element, repeat.