4.2 SDDS_CastValue

• name:
  SDDS_CastValue
• description:
  Casts a numeric value from one specified type (presumed to be the actual type) into another specified type.
• synopsis: #include ”SDDS.h”
  void *SDDS_CastValue(void *data, int32_t index, int32_t data_type, int32_t desired_type, void *memory)
• arguments:
  • 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.
  • data_type: The declared 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.
  • desired_type: The desired type to cast the data to.
  • memory: The address of the location in which to store the result. If NULL, space is allocated.
• return value:
  The address of the location in which the result was stored. Returns NULL on error and records an error message.
• see also:
  • SDDS_ConvertToDouble
  • SDDS_GetColumnInDoubles
  • SDDS_PrintErrors
  • SDDS_PrintTypedValue
  • SDDS_NumberOfErrors