isMultipleCall
isMultipleCall checks the stack for multiple calls
isMultipleCall checks to see if multiple calls are present in the call
stack to the function from which isMultipleCall was called.
Example:
TF=isMultipleCall()
returns true if the stack contains more than one call to the
function that called isMultipleCall
false otherwise
See also: dbstack
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Author: Malcolm Lidierth 11/09
Copyright © The Author & King's College London 2009-
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