`f = flops`

`flops(0)`

`f = flops`

returns the cumulative number of floating-point operations.
`flops(0)`

resets the count to zero.

`A`

and` B`

are real `n`

-by-`n`

matrices, some typical flop counts for different operations are

---------------------MATLAB's version of the LINPACK benchmark isOperationFlop Count---------------------`A+B`

`n^2`

`A*B`

`2*n^3`

`A^100`

`99*(2*n^3)`

`lu(A)`

`(2/3)*n^3`

---------------------

`n = 100;`

`A = rand(n,n);`

`b = rand(n,1);`

`flops(0)`

`tic;`

`x = A\b;`

`t = toc`

`megaflops = flops/t/1.e6`