int MLTransferExpression (MLINK dst, MLINK src) transfers an expression to destination link dst from source link src.
int MLGetMessage (MLINK link, int* code, int*param) reads an out-of-band message code from the urgent message channel associated with link and stores the code in code and any ...
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const char * MLErrorMessage (MLINK link) returns a character string describing the last error to occur on link.
MLMARK MLSeekMark (MLINK link, MLMARK mark, int n) goes back to a position n expressions after the specified mark on a link.
int MLActivate (MLINK link) activates a MathLink connection, waiting for the program at the other end to respond.
int MLClearError (MLINK link) clears errors on link if possible.
int MLEvaluateString (MLINK link, char *string) sends a string to Mathematica for evaluation, and discards any packets sent in response.
int MLGetData (MLINK link, char *b, int len, int *count) gets textual data from the MathLink connection specified by link, storing the result in a buffer b of maximum length ...