What is an efficient way of finding the maximum value under a certain limit?

Can you guys throw few lines my way that will help me find the maximum value under a certain threshold in a matrix? Lets say I have this matrix: [1,2,3;4,5,6;7,8,9] and I would like to find the maximum value below 8, so the code will return the index and the value, which in this case will be the number 7. The reason I emphasized efficiency is because I will be running this so many times in a bunch of for loops, so I was looking for the fastest thing. Thanks in advance.

Answer 1

[Torsten]

A = [1,2,3;4,5,6;7,8,9];
A(A>=8) = -Inf

A = 3×3

1 2 3 4 5 6 7 -Inf -Inf

[m,i] = max(A,[],'All')

m = 7

i = 3

[row,col] = ind2sub(size(A),i)

row = 3

col = 1