| lmpool_c |
|
Table of contents
Procedure
lmpool_c ( Load variables from memory into the pool )
void lmpool_c ( const void * cvals,
SpiceInt cvalen,
SpiceInt n )
AbstractLoad the variables contained in an internal buffer into the kernel pool. Required_ReadingKERNEL KeywordsCONSTANTS FILES Brief_I/OVARIABLE I/O DESCRIPTION -------- --- -------------------------------------------------- cvals I An array that contains a SPICE text kernel. cvalen I Length of strings in cvals. n I The number of entries in cvals. Detailed_Input
cvals is an array of strings that contains lines of text
that could serve as a SPICE text kernel. cvals is
declared as follows:
ConstSpiceChar cvals [n][cvalen]
Each string in cvals is null-terminated.
cvalen is the common length of the strings in cvals,
including the terminating nulls.
n is the number of strings in cvals.
Detailed_OutputNone. ParametersNone. Exceptions
1) If any of the kernel pool variables names or their values, as
provided in the input `cvals' array, cannot be parsed, an error
is signaled by a routine in the call tree of this routine.
2) If there is no room left in the kernel pool to store all
variables present in the input `cvals' array, an error is
signaled by a routine in the call tree of this routine.
3) If the length of any kernel pool variable name present in the
input `cvals' array exceeds its maximum allowed length (see
Kernel Required Reading, kernel.req), an error is signaled by
a routine in the call tree of this routine.
4) If the `cvals' input array pointer is null, the error
SPICE(NULLPOINTER) is signaled.
5) If the `cvals' input array strings have length less than two
characters, the error SPICE(STRINGTOOSHORT) is signaled.
FilesNone. ParticularsThis routine allows you to store a text kernel in an internal array of your program and load this array into the kernel pool without first storing its contents as a text kernel. Kernel pool variable names are restricted to a length of 32 characters or less. 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 an LSK kernel in a text buffer and load the variables
contained within the buffer into the kernel pool. Ensure the
loaded data exists in the kernel pool. Query the pool for
each expected name, and print the size of the variable with
that name, and the type of data for that name.
Convert a UTC time string to ephemeris time to verify that
the LSK loaded from the text buffer works as if it was loaded
using a furnsh_c call.
Example code begins here.
/.
Program lmpool_ex1
./
#include <stdio.h>
#include "SpiceUsr.h"
int main( )
{
/.
Local constants.
./
#define LNSIZE 81
#define NLINES 27
/.
Local variables.
./
SpiceBoolean found;
SpiceChar dtype [ 20 ];
SpiceInt i;
SpiceInt n;
SpiceDouble et;
/.
Kernel pool variable's names.
./
SpiceChar * varnam [] = { "DELTET/DELTA_T_A",
"DELTET/K",
"DELTET/EB",
"DELTET/M",
"DELTET/DELTA_AT" };
/.
Create a kernel in a text buffer.
./
SpiceChar textbuf[NLINES][LNSIZE] =
{
"DELTET/DELTA_T_A = 32.184",
"DELTET/K = 1.657D-3",
"DELTET/EB = 1.671D-2",
"DELTET/M = ( 6.239996 1.99096871D-7 )",
"DELTET/DELTA_AT = ( 10, @1972-JAN-1",
" 11, @1972-JUL-1",
" 12, @1973-JAN-1",
" 13, @1974-JAN-1",
" 14, @1975-JAN-1",
" 15, @1976-JAN-1",
" 16, @1977-JAN-1",
" 17, @1978-JAN-1",
" 18, @1979-JAN-1",
" 19, @1980-JAN-1",
" 20, @1981-JUL-1",
" 21, @1982-JUL-1",
" 22, @1983-JUL-1",
" 23, @1985-JUL-1",
" 24, @1988-JAN-1",
" 25, @1990-JAN-1",
" 26, @1991-JAN-1",
" 27, @1992-JUL-1",
" 28, @1993-JUL-1",
" 29, @1994-JUL-1",
" 30, @1996-JAN-1",
" 31, @1997-JUL-1",
" 32, @1999-JAN-1 )"
};
/.
Load the kernel data into the kernel pool.
./
lmpool_c ( textbuf, LNSIZE, NLINES );
/.
Ensure the loaded data exists in the kernel pool.
Query the pool for each expected name, size of the
variable with that name, and the type of data
for that name.
./
printf ( "Checking data loaded in the kernel pool...\n");
for ( i = 0; i < 5; i++ )
{
dtpool_c ( varnam[i], &found, &n, dtype );
if ( found )
{
printf ( "Found %s\n", varnam[i] );
printf ( " # values assigned to name : %d\n", (int)n );
printf ( " with data type : %s\n", dtype );
}
else
{
printf ( "Variable '%s' not found in the kernel pool\n",
varnam[i] );
}
}
/.
Convert an UTC string to ephemeris time.
./
str2et_c ( "1991-NOV-26", &et );
printf ( "\nPerforming time conversion...\n" );
printf ( " Ephemeris time (1991-NOV-26): %f\n", et );
return ( 0 );
}
When this program was executed on a Mac/Intel/cc/64-bit
platform, the output was:
Checking data loaded in the kernel pool...
Found DELTET/DELTA_T_A
# values assigned to name : 1
with data type : N
Found DELTET/K
# values assigned to name : 1
with data type : N
Found DELTET/EB
# values assigned to name : 1
with data type : N
Found DELTET/M
# values assigned to name : 2
with data type : N
Found DELTET/DELTA_AT
# values assigned to name : 46
with data type : N
Performing time conversion...
Ephemeris time (1991-NOV-26): -255614341.817042
RestrictionsNone. Literature_ReferencesNone. Author_and_InstitutionN.J. Bachman (JPL) J. Diaz del Rio (ODC Space) W.L. Taber (JPL) E.D. Wright (JPL) Version
-CSPICE Version 1.4.0, 04-AUG-2021 (JDR)
Changed the input argument name "lenvals" to "cvalen" for
consistency with other routines.
Edited the header to comply with NAIF standard. Added complete
code example. Extended the -Exceptions section.
-CSPICE Version 1.3.1, 10-FEB-2010 (EDW)
Added mention of the restriction on kernel pool variable
names to 32 characters or less.
-CSPICE Version 1.3.0, 12-JUL-2002 (NJB)
Call to C2F_CreateStrArr_Sig replaced with call to C2F_MapStrArr.
-CSPICE Version 1.2.0, 28-AUG-2001 (NJB)
Const-qualified input array.
-CSPICE Version 1.1.0, 14-FEB-2000 (NJB)
Calls to C2F_CreateStrArr replaced with calls to error-signaling
version of this routine: C2F_CreateStrArr_Sig.
-CSPICE Version 1.0.0, 08-JUN-1999 (NJB) (WLT)
Index_EntriesLoad the kernel pool from an internal text buffer |
Fri Dec 31 18:41:09 2021