ekuced_c

Index Page ekuced_c
A B C D E F G H I J K L M N O P Q R S T U V W X
Procedure Abstract Required_Reading Keywords Brief_I/O Detailed_Input | Detailed_Output Parameters Exceptions Files Particulars Examples | Restrictions Literature_References Author_and_Institution Version Index_Entries
#### Procedure
       void ekuced_c  ( SpiceInt             handle,
                        SpiceInt             segno,
                        SpiceInt             recno,
                        ConstSpiceChar     * column,
                        SpiceInt             nvals,
                        ConstSpiceDouble   * dvals,
                        SpiceBoolean         isnull )
#### Abstract
       Update a double precision column entry in a specified EK record.
#### Required_Reading
       EK
#### Keywords
       EK
       FILES
       UTILITY
#### Brief_I/O
       Variable  I/O  Description
       --------  ---  --------------------------------------------------
       handle     I   Handle attached to EK file.
       segno      I   Index of segment containing record.
       recno      I   Record in which entry is to be updated.
       column     I   Column name.
       nvals      I   Number of values in new column entry.
       dvals      I   Double precision values comprising new column entry.
       isnull     I   Flag indicating whether column entry is null.
#### Detailed_Input
       handle         is a file handle attached to an EK open for
                      write access.

       segno          is the index of the segment containing the column
                      entry to be updated.  EK segment numbers range from
                      0 to N-1, where N is the number of segments
                      in the kernel.

       recno          is the index of the record containing the column
                      entry to be updated.  This record number is
                      relative to the start of the segment indicated by
                      segno; the first record in the segment has index 0.

       column         is the name of the column containing the entry to
                      be updated.

       nvals,
       dvals          are, respectively, the number of values to insert into
                      the specified column and the set of values
                      themselves.  The data values are written in to the
                      specifed column and record.

                      If the  column has fixed-size entries, then nvals
                      must equal the entry size for the specified column.

                      For columns with variable-sized entries, the size
                      of the new entry need not match the size of the
                      entry it replaces.  In particular, the new entry
                      may be larger.

       isnull         is a logical flag indicating whether the entry is
                      null.  If isnull is SPICEFALSE, the column entry
                      defined by nvals and dvals is added to the
                      specified kernel file.

                      If isnull is SPICETRUE, nvals and ivals are ignored.
                      The column entry is marked as a null value.
                      The contents of the column entry are undefined.
                      If the column has fixed-length, variable-size
                      entries, the number of entries is considered to
                      be 1.

                      The new entry may be null even though it replaces
                      a non-null value, and vice versa.
#### Detailed_Output
       None.  See $Particulars for a description of the effect of this
       routine.
#### Parameters
       None.
#### Exceptions
       1)  If handle is invalid, the error will be diagnosed by routines
           called by this routine.

       2)  If segno is out of range, the error will diagnosed by routines
           called by this routine.

       3)  If column is not the name of a declared column, the error
           will be diagnosed by routines called by this routine.

       4)  If column specifies a column of whose data type is not
           double precision, the error SPICE(WRONGDATATYPE) will be
           signaled.

       5)  If recno is out of range, the error will diagnosed by routines
           called by this routine.

       6)  If the specified column has fixed-size entries and nvals
           does not match this size, the error will diagnosed by routines
           called by this routine.

       7)  If the specified column has variable-size entries and nvals
           is non-positive, the error will diagnosed by routines
           called by this routine.

       8)  If an attempt is made to add a null value to a column that
           doesn't take null values, the error will diagnosed by routines
           called by this routine.

       9)  If COLUMN specifies a column of whose class is not
           a double precision class known to this routine, the error
           SPICE(NOCLASS) will be signaled.

       10) If an I/O error occurs while reading or writing the indicated
           file, the error will be diagnosed by routines called by this
           routine.

       11) If the input column name string pointer is null, the error
           SPICE(NULLPOINTER) will be signaled.

       12) If the input column name string has length zero, the error
           SPICE(EMPTYSTRING) will be signaled.
#### Files
       See the EK Required Reading for a discussion of the EK file
       format.
#### Particulars
       This routine operates by side effects:  it modifies the named
       EK file by adding data to the specified record in the specified
       column.  Data may be added to a segment in random order; it is not
       necessary to fill in columns or rows sequentially. Data may only
       be added one logical element at a time.  Partial assignments of
       logical elements are not supported.

       Since columns of data type TIME are implemented using double
       precision column classes, this routine may be used to update
       columns of type TIME.
#### Examples
       1)  Replace the value in the third record of the column DCOL in
           the fifth segment of an EK file designated by HANDLE.  Set
           the new value to 999..

              #include <SpiceUsr.h>
                  .
                  .
                  .
              ekuced_c ( handle, 4, 2, "DCOL", 1, 999.0, SPICEFALSE );

       2)  Same as (1), but this time add a null value.  The argument
           999. is ignored because the null flag is set to SPICETRUE

              #include <SpiceUsr.h>
                  .
                  .
                  .
              ekuced_c ( handle, 4, 2, "DCOL", 1, 999.0, SPICETRUE );

       3)  Replace the entry in the third record of the column DARRAY in
           the fifth segment of an EK file designated by HANDLE.  Set
           the new value using an array DBUFF of 10 d.p. values.

              #include <SpiceUsr.h>
                  .
                  .
                  .
               ekuced_c ( handle, 4, 2, "DARRAY", 10, dbuff, SPICEFALSE );
#### Restrictions
       None.
#### Literature_References
       None.
#### Author_and_Institution
       N.J. Bachman   (JPL)
#### Version
       -CSPICE Version 1.0.0, 28-AUG-2001 (NJB)
#### Index_Entries
       replace d.p. entry in an EK column
       replace time entry in an EK column
#### Link to routine ekuced_c source file ekuced_c.c

    Thu Apr 16 08:58:00 2009