#DEFFUN

Purpose:

Defines a single line DADiSP function.

Syntax:

#DEFFUN name(arg1, arg2, ..., argn) statement

name - A string up to 15 characters long naming the function.

argn - Optional. Any argument being passed to the function.

statement - The body of the function. An equation or expression incorporating the function arguments.

Example:

#deffun normal(s) s/max(s)

defines a function which normalizes a series by its maximum value.

W1: {1,2,3,4,5}

normal(W1)

returns the series {0.2, 0.4, 0.6, 0.8, 1.0}.

Example:

#deffun minmax max-min

defines a function minmax equal to the range of the data.

Remarks:

SPL function names are not case sensitive.

If a function does not accept arguments, the argument list is omitted. Multi-line functions must be specified in separate ASCII files.

You can use #DEFFUN to redefine existing functions. Functions are defined and saved with the Worksheet.

Use SPLWRITE to write functions to a file.

An SPL function normally resides in a text file with extension .SPL where the filename is the same as the function name. See the .SPL directory for examples.

#DEFFUN

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