Data I/Os

The following functions are used to load data from a file:

int ReadSPData(data_t **, FILE *);

int LoadSPData(data_t **, flag_t, FILE *);

The difference between those two functions is that the later also makes conversions. Actually, the second argument of LoadSPData() is the qualifier that the returned data should have. Therefore, LoadSPData() first invoke ReadSPData() and then convert the data using the ConvertData() routine. An error is returned if the conversion is impossible. The conversion function (int ConvertData(data_t **,data_t *,flag_t)), is in charge of simple conversions such as subtracting the long term mean, adding the $\Delta$ and $\Delta\Delta$ coefficients ...

The output function is:

int WriteSPData(data_t *, FILE *);