MLCheckFunction() intMLCheckFunction(MLINKlink,char*name,long*n) checks that a function whose head is a symbol with the specified name is on link, and stores the number of the arguments of the function in n. MLCheckFunction() returns 0 if the current object on the link is not a function with a symbol as a head, or if the name of the symbol does not match name. See the Mathematica book: Section 2.12.4. See also: MLGetFunctionMLGetFunctionMainBookLinkOldButtonDataMLGetFunction.
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