Read scalar boolean data from a gateway argument.
int getScalarBoolean(void* _pvCtx, int* _piAddress, int* _piBool)
int getNamedScalarBoolean(void* _pvCtx, const char* _pstName, int* _piBool)
Scilab environment pointer, pass in "pvApiCtx" provided by api_scilab.h.
Address of the Scilab variable.
Name of the variable for "named" functions.
Return boolean value.
if successful 0, otherwise print error(s) message(s) in the Scilab console and returns first error number.