I am using log2 function in Octave to calculate log2 values of a simple array.
>> x = [1:5]
x =
1 2 3 4 5
>> log2(x)
error: invalid use of script D:\All_Data\my_data\backup3\backup3\tech\DSP\log2.m in index expression
I am not sure why Octave is bailing out with error in this case ...