6.9 SDDS_ConvertToDouble

• name:
  SDDS_ConvertToDouble
• description:
  Converts an item of data from a specified type into a double precision value.
• synopsis: #include ”SDDS.h”
  double SDDS_ConvertToDouble(int32_t type, void *data, int32_t index)
• arguments:
  • type: The type of the data. Must be one of the constants (defined in SDDS.h) SDDS_LONGDOUBLE, SDDS_DOUBLE, SDDS_FLOAT, SDDS_LONG, SDDS_ULONG, SDDS_SHORT, SDDS_USHORT, or SDDS_CHARACTER.
  • data: The reference address of the data to be converted.
  • index: The offset of the address of the item to be converted from the reference address, in units of the size of the declared type.
• return value:
  The double precision value is returned. If an error occurs, zero is returned and an error message is recorded.
• see also:
  • SDDS_CastValue
  • SDDS_GetColumnInDoubles
  • SDDS_PrintErrors
  • SDDS_PrintTypedValue
  • SDDS_NumberOfErrors