astColumnSizeastColumnSize - Get the number of bytes needed to hold a full column of data

Description:
This function returns the number of bytes of memory that must be allocated prior to retrieving the data from a column using astGetColumnDataastGetColumnData.
Synopsis:
size_t astColumnSize( AstFitsTable $*$this, const char $*$column, int $*$hasnull )
Parameters:
this
Pointer to the TableTable.
column
The character string holding the name of the column. Trailing spaces are ignored.
Returned Value:
astColumnNullastColumnNull()
The number of bytes required to store the column data.
Notes:
  • An error will be reported if the named column does not exist in the FitsTableFitsTable.

  • Zero will be returned as the function value in an error occurs.