Get scalar double variable.
int getScalarDouble(void* _pvCtx, int* _piAddress, double* _pdblReal)
int getNamedScalarDouble(void* _pvCtx, const char* _pstName, double* _pdblReal)
Scilab environment pointer, pass in "pvApiCtx" provided by api_scilab.h.
Address of the Scilab variable.
Name of the variable for "named" functions.
Double value.
if successful 0, otherwise print error(s) message(s) in the Scilab console and returns first error number.