MATLAB Programming

4 M-File Programming
Function Definition Line
The function definition line informs MATLAB that the M-file contains a
function, and specifies the argument calling sequence of the function. The
function definition line for the fact function is
All MATLAB functions have a function definition line that follows this
pattern.
Function Name. Function names must begin with a letter, may contain any
alphanumeric characters or underscores, and must be no longer than the
maximum allowed length (returned by the function namelengthmax). Because
variables must obey similar rules, you can use the isvarname function to
check whether a function name is valid:
isvarname myfun
Although function names can be of any length, MATLAB uses only the first
N characters of the name (where N is the number returned by the function
namelengthmax) and ignores the rest. Hence, it is important to make each
function name unique in the first N characters:
N = namelengthmax
N =
63
Note Some operating systems may restrict file names to shorter lengths.
The name of the text file that contains a MATLAB function consists of the
function name with the extension .m appended. For example,
average.m
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