| appndd_c |
|
Table of contents
Procedure
appndd_c ( Append an item to a double precision cell )
void appndd_c ( SpiceDouble item,
SpiceCell * cell )
AbstractAppend an item to a double precision cell. Required_ReadingCELLS KeywordsCELLS Brief_I/OVARIABLE I/O DESCRIPTION -------- --- -------------------------------------------------- item I The item to append. cell I-O The cell to which item will be appended. Detailed_Input
item is a double precision value which is to be appended to
`cell'.
cell is a double precision SPICE cell to which `item' will be
appended.
`cell' must be declared as a double precision SpiceCell.
CSPICE provides the following macro, which declares and
initializes the cell
SPICEDOUBLE_CELL ( cell, CELLSZ );
where CELLSZ is the maximum capacity of `cell'.
Detailed_Output
cell is the input cell with `item' appended. `item' is the last
member of `cell'.
If `cell' is actually a SPICE set on input and ceases to
qualify as a set as result of the requested append
operation, the `isSet' member of `cell' will be set to
SPICEFALSE.
ParametersNone. Exceptions
1) If the input cell argument doesn't have double precision data type,
the error SPICE(TYPEMISMATCH) is signaled.
2) If the cell is not big enough to accommodate the addition
of a new element, the error SPICE(CELLTOOSMALL) is signaled.
FilesNone. ParticularsNone. Examples
The numerical results shown for this example may differ across
platforms. The results depend on the SPICE kernels used as
input, the compiler and supporting libraries, and the machine
specific arithmetic implementation.
1) Create a cell for fifteen elements, add a first element to
it and then append several more integer numbers. Validate
the cell into a set and print the result. Finally, append
another integer number. After each operation, check if the
cell constitutes a set or not.
Example code begins here.
/.
Program appndd_ex1
./
#include <stdio.h>
#include "SpiceUsr.h"
int main( )
{
/.
Local constants.
./
#define LISTSZ 9
#define SETDIM 15
/.
Local variables.
./
SPICEDOUBLE_CELL ( a , SETDIM );
SpiceInt i;
/.
Set the list of double precision numbers to be appended
to the cell.
./
SpiceDouble items [LISTSZ] = { 3.0, 1.0, 1.0,
2.0, 5.0, 8.0,
21.0, 13.0, 34.0 };
/.
Add a single item to the new cell.
./
appndd_c ( 0, &a );
/.
Now insert a list of items.
./
for ( i = 0; i < LISTSZ; i++ )
{
appndd_c ( items[i], &a );
}
/.
Output the original contents of cell A.
./
printf( "Items in original set A:\n" );
for ( i = 0; i < card_c( &a ); i++ )
{
printf( "%6.1f", SPICE_CELL_ELEM_D( &a, i ) );
}
printf( " \n" );
/.
After the append, does the cell key as a set?
./
if ( a.isSet )
{
printf( "Cell is a set after first append\n" );
}
else
{
printf ( "Cell is not a set after first append\n" );
}
/.
Initialize the set by validating the cell: remove duplicates
and sort the elements in increasing order.
./
valid_c ( SETDIM, card_c( &a ), &a );
printf( " \n" );
printf( "Items in cell A after valid_c:\n" );
for ( i = 0; i < card_c( &a ); i++ )
{
printf( "%6.1f", SPICE_CELL_ELEM_D( &a, i ) );
}
printf( " \n" );
/.
After the append, does the cell key as a set?
./
if ( a.isSet )
{
printf( "Cell is a set after valid_c\n" );
}
else
{
printf ( "Cell is not a set after valid_c\n" );
}
/.
Append a new value to the cell, the value being less than all
other set values.
./
appndd_c ( -22, &a );
printf( " \n" );
printf( "Items in cell A after second append:\n" );
for ( i = 0; i < card_c( &a ); i++ )
{
printf( "%6.1f", SPICE_CELL_ELEM_D( &a, i ) );
}
printf( " \n" );
/.
After the append, does the cell key as a set?
./
if ( a.isSet )
{
printf( "Cell is a set after second append\n" );
}
else
{
printf ( "Cell is not a set after second append\n" );
}
return ( 0 );
}
When this program was executed on a Mac/Intel/cc/64-bit
platform, the output was:
Items in original set A:
0.0 3.0 1.0 1.0 2.0 5.0 8.0 21.0 13.0 34.0
Cell is not a set after first append
Items in cell A after valid_c:
0.0 1.0 2.0 3.0 5.0 8.0 13.0 21.0 34.0
Cell is a set after valid_c
Items in cell A after second append:
0.0 1.0 2.0 3.0 5.0 8.0 13.0 21.0 34.0 -22.0
Cell is not a set after second append
RestrictionsNone. Literature_ReferencesNone. Author_and_InstitutionN.J. Bachman (JPL) J. Diaz del Rio (ODC Space) H.A. Neilan (JPL) Version
-CSPICE Version 1.0.1, 27-AUG-2021 (JDR)
Edited the header to comply with NAIF standard. Added complete code
example.
Extended description of argument "cell" in -Detailed_Input to include
type and preferred declaration method.
-CSPICE Version 1.0.0, 01-AUG-2002 (NJB) (HAN)
Index_Entriesappend an item to a d.p. cell |
Fri Dec 31 18:41:01 2021