/* cknr04.f -- translated by f2c (version 19980913).
   You must link the resulting object file with the libraries:
	-lf2c -lm   (in that order)
*/

#include "f2c.h"

/* Table of constant values */

static integer c__2 = 2;
static integer c__6 = 6;
static integer c__12 = 12;

/* $Procedure      CKNR04 ( C-kernel, number of records, data type 4 ) */
/* Subroutine */ int cknr04_(integer *handle, doublereal *descr, integer *
	nrec)
{
    extern /* Subroutine */ int chkin_(char *, ftnlen), dafus_(doublereal *, 
	    integer *, integer *, doublereal *, integer *), sgmeta_(integer *,
	     doublereal *, integer *, integer *), sigerr_(char *, ftnlen), 
	    chkout_(char *, ftnlen), setmsg_(char *, ftnlen), errint_(char *, 
	    integer *, ftnlen);
    extern logical return_(void);
    doublereal dcd[2];
    integer icd[6];

/* $ Abstract */

/*     Given the handle of a CK file and the descriptor of a type 4 */
/*     segment in that file, return the number of pointing instances */
/*     in that segment. */

/* $ Disclaimer */

/*     THIS SOFTWARE AND ANY RELATED MATERIALS WERE CREATED BY THE */
/*     CALIFORNIA INSTITUTE OF TECHNOLOGY (CALTECH) UNDER A U.S. */
/*     GOVERNMENT CONTRACT WITH THE NATIONAL AERONAUTICS AND SPACE */
/*     ADMINISTRATION (NASA). THE SOFTWARE IS TECHNOLOGY AND SOFTWARE */
/*     PUBLICLY AVAILABLE UNDER U.S. EXPORT LAWS AND IS PROVIDED "AS-IS" */
/*     TO THE RECIPIENT WITHOUT WARRANTY OF ANY KIND, INCLUDING ANY */
/*     WARRANTIES OF PERFORMANCE OR MERCHANTABILITY OR FITNESS FOR A */
/*     PARTICULAR USE OR PURPOSE (AS SET FORTH IN UNITED STATES UCC */
/*     SECTIONS 2312-2313) OR FOR ANY PURPOSE WHATSOEVER, FOR THE */
/*     SOFTWARE AND RELATED MATERIALS, HOWEVER USED. */

/*     IN NO EVENT SHALL CALTECH, ITS JET PROPULSION LABORATORY, OR NASA */
/*     BE LIABLE FOR ANY DAMAGES AND/OR COSTS, INCLUDING, BUT NOT */
/*     LIMITED TO, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND, */
/*     INCLUDING ECONOMIC DAMAGE OR INJURY TO PROPERTY AND LOST PROFITS, */
/*     REGARDLESS OF WHETHER CALTECH, JPL, OR NASA BE ADVISED, HAVE */
/*     REASON TO KNOW, OR, IN FACT, SHALL KNOW OF THE POSSIBILITY. */

/*     RECIPIENT BEARS ALL RISK RELATING TO QUALITY AND PERFORMANCE OF */
/*     THE SOFTWARE AND ANY RELATED MATERIALS, AND AGREES TO INDEMNIFY */
/*     CALTECH AND NASA FOR ALL THIRD-PARTY CLAIMS RESULTING FROM THE */
/*     ACTIONS OF RECIPIENT IN THE USE OF THE SOFTWARE. */

/* $ Required_Reading */

/*     CK.REQ */
/*     DAF.REQ */
/*     GS.REQ */

/* $ Keywords */

/*     POINTING */

/* $ Declarations */
/* $ Abstract */

/*     Declarations of the CK data type specific and general CK low */
/*     level routine parameters. */

/* $ Disclaimer */

/*     THIS SOFTWARE AND ANY RELATED MATERIALS WERE CREATED BY THE */
/*     CALIFORNIA INSTITUTE OF TECHNOLOGY (CALTECH) UNDER A U.S. */
/*     GOVERNMENT CONTRACT WITH THE NATIONAL AERONAUTICS AND SPACE */
/*     ADMINISTRATION (NASA). THE SOFTWARE IS TECHNOLOGY AND SOFTWARE */
/*     PUBLICLY AVAILABLE UNDER U.S. EXPORT LAWS AND IS PROVIDED "AS-IS" */
/*     TO THE RECIPIENT WITHOUT WARRANTY OF ANY KIND, INCLUDING ANY */
/*     WARRANTIES OF PERFORMANCE OR MERCHANTABILITY OR FITNESS FOR A */
/*     PARTICULAR USE OR PURPOSE (AS SET FORTH IN UNITED STATES UCC */
/*     SECTIONS 2312-2313) OR FOR ANY PURPOSE WHATSOEVER, FOR THE */
/*     SOFTWARE AND RELATED MATERIALS, HOWEVER USED. */

/*     IN NO EVENT SHALL CALTECH, ITS JET PROPULSION LABORATORY, OR NASA */
/*     BE LIABLE FOR ANY DAMAGES AND/OR COSTS, INCLUDING, BUT NOT */
/*     LIMITED TO, INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND, */
/*     INCLUDING ECONOMIC DAMAGE OR INJURY TO PROPERTY AND LOST PROFITS, */
/*     REGARDLESS OF WHETHER CALTECH, JPL, OR NASA BE ADVISED, HAVE */
/*     REASON TO KNOW, OR, IN FACT, SHALL KNOW OF THE POSSIBILITY. */

/*     RECIPIENT BEARS ALL RISK RELATING TO QUALITY AND PERFORMANCE OF */
/*     THE SOFTWARE AND ANY RELATED MATERIALS, AND AGREES TO INDEMNIFY */
/*     CALTECH AND NASA FOR ALL THIRD-PARTY CLAIMS RESULTING FROM THE */
/*     ACTIONS OF RECIPIENT IN THE USE OF THE SOFTWARE. */

/* $ Required_Reading */

/*     CK.REQ */

/* $ Keywords */

/*     CK */

/* $ Restrictions */

/*     1) If new CK types are added, the size of the record passed */
/*        between CKRxx and CKExx must be registered as separate */
/*        parameter. If this size will be greater than current value */
/*        of the CKMRSZ parameter (which specifies the maximum record */
/*        size for the record buffer used inside CKPFS) then it should */
/*        be assigned to CKMRSZ as a new value. */

/* $ Author_and_Institution */

/*     N.J. Bachman      (JPL) */
/*     B.V. Semenov      (JPL) */

/* $ Literature_References */

/*     CK Required Reading. */

/* $ Version */

/* -    SPICELIB Version 2.0.0, 19-AUG-2002 (NJB) */

/*        Updated to support CK type 5. */

/* -    SPICELIB Version 1.0.0, 05-APR-1999 (BVS) */

/* -& */

/*     Number of quaternion components and number of quaternion and */
/*     angular rate components together. */


/*     CK Type 1 parameters: */

/*     CK1DTP   CK data type 1 ID; */

/*     CK1RSZ   maximum size of a record passed between CKR01 */
/*              and CKE01. */


/*     CK Type 2 parameters: */

/*     CK2DTP   CK data type 2 ID; */

/*     CK2RSZ   maximum size of a record passed between CKR02 */
/*              and CKE02. */


/*     CK Type 3 parameters: */

/*     CK3DTP   CK data type 3 ID; */

/*     CK3RSZ   maximum size of a record passed between CKR03 */
/*              and CKE03. */


/*     CK Type 4 parameters: */

/*     CK4DTP   CK data type 4 ID; */

/*     CK4PCD   parameter defining integer to DP packing schema that */
/*              is applied when seven number integer array containing */
/*              polynomial degrees for quaternion and angular rate */
/*              components packed into a single DP number stored in */
/*              actual CK records in a file; the value of must not be */
/*              changed or compatibility with existing type 4 CK files */
/*              will be lost. */

/*     CK4MXD   maximum Chebychev polynomial degree allowed in type 4 */
/*              records; the value of this parameter must never exceed */
/*              value of the CK4PCD; */

/*     CK4SFT   number of additional DPs, which are not polynomial */
/*              coefficients, located at the beginning of a type 4 */
/*              CK record that passed between routines CKR04 and CKE04; */

/*     CK4RSZ   maximum size of type 4 CK record passed between CKR04 */
/*              and CKE04; CK4RSZ is computed as follows: */

/*                 CK4RSZ = ( CK4MXD + 1 ) * QAVSIZ + CK4SFT */


/*     CK Type 5 parameters: */


/*     CK5DTP   CK data type 5 ID; */

/*     CK5MXD   maximum polynomial degree allowed in type 5 */
/*              records. */

/*     CK5MET   number of additional DPs, which are not polynomial */
/*              coefficients, located at the beginning of a type 5 */
/*              CK record that passed between routines CKR05 and CKE05; */

/*     CK5MXP   maximum packet size for any subtype.  Subtype 2 */
/*              has the greatest packet size, since these packets */
/*              contain a quaternion, its derivative, an angular */
/*              velocity vector, and its derivative.  See ck05.inc */
/*              for a description of the subtypes. */

/*     CK5RSZ   maximum size of type 5 CK record passed between CKR05 */
/*              and CKE05; CK5RSZ is computed as follows: */

/*                 CK5RSZ = ( CK5MXD + 1 ) * CK5MXP + CK5MET */



/*     Maximum record size that can be handled by CKPFS. This value */
/*     must be set to the maximum of all CKxRSZ parameters (currently */
/*     CK4RSZ.) */

/* $ Brief_I/O */

/*     Variable  I/O  Description */
/*     --------  ---  -------------------------------------------------- */
/*     HANDLE     I   The handle of the file containing the segment. */
/*     DESCR      I   The descriptor of the type 4 segment. */
/*     NREC       O   The number of pointing records in the segment. */

/* $ Detailed_Input */

/*     HANDLE     is the handle of the binary CK file containing the */
/*                segment. The file should have been opened for read */
/*                or write access, either by CKLPF, DAFOPR, or DAFOPW. */

/*     DESCR      The packed descriptor of a data type 4 segment. */

/* $ Detailed_Output */

/*     NREC       The number of pointing records in the type 4 */
/*                segment. */

/* $ Parameters */

/*     See 'ckparam.inc'. */

/* $ Files */

/*     The file specified by HANDLE should be open for read or */
/*     write access. */

/* $ Exceptions */

/*     1)  If the segment indicated by DESCR is not a type 4 segment, */
/*         the error 'SPICE(CKWRONGDATATYPE)' is signalled. */

/*     2)  If the specified handle does not belong to any DAF file that */
/*         is currently known to be open, an error is diagnosed by a */
/*         routine that this routine calls. */

/*     3)  If DESCR is not a valid descriptor of a segment in the CK */
/*         file specified by HANDLE, the results of this routine are */
/*         unpredictable. */

/* $ Particulars */

/*     For a complete description of the internal structure of a type 4 */
/*     segment, see the CK required reading. */

/*     This routine returns the number of pointing records contained */
/*     in the specified segment. It is normally used in conjunction */
/*     with CKGR04 which returns the Ith pointing record in the */
/*     segment. */

/* $ Examples */

/*     Suppose that DATA.BC is a CK file that contains segments of */
/*     data type 4. Then the following code fragment extracts the */
/*     data packets contained in the segment. */

/*     C */
/*     C     CK parameters include file. */
/*     C */
/*           INCLUDE               'ckparam.inc' */
/*     C */
/*     C     Declarations. */
/*     C */
/*           DOUBLE PRECISION      DCD    ( 2 ) */
/*           DOUBLE PRECISION      DESCR  ( 5 ) */
/*           DOUBLE PRECISION      PKTDAT ( CK4RSZ ) */

/*           INTEGER               AVFLAG */
/*           INTEGER               HANDLE */
/*           INTEGER               I */
/*           INTEGER               ICD    ( 6 ) */
/*           INTEGER               K */
/*           INTEGER               LASTAD */
/*           INTEGER               NCOEF  ( QAVSIZ ) */
/*           INTEGER               NREC */

/*           LOGICAL               FOUND */
/*     C */
/*     C     First load the file. (The file may also be opened by using */
/*     C     CKLPF.) */
/*     C */
/*           CALL DAFOPR ( 'DATA.BC', HANDLE ) */
/*     C */
/*     C     Begin forward search. Find the first array. */
/*     C */
/*           CALL DAFBFS ( HANDLE ) */
/*           CALL DAFFNA ( FOUND  ) */
/*     C */
/*     C     Get segment descriptor. */
/*     C */
/*           CALL DAFGS ( DESCR ) */
/*     C */
/*     C     Unpack the segment descriptor into its double precision */
/*     C     and integer components. */
/*     C */
/*           CALL DAFUS ( DESCR, 2, 6, DCD, ICD ) */

/*           IF ( ICD( 3 ) .EQ. 4 ) THEN */
/*     C */
/*     C        How many records does this segment contain? */
/*     C */
/*              CALL CKNR04 ( HANDLE, DESCR, NREC ) */

/*              DO I = 1, NREC */
/*     C */
/*     C           Get the data records stored in the segment. */
/*     C */
/*                 CALL CKGR04 ( HANDLE, DESCR, I, PKTDAT ) */
/*     C */
/*     C           Print data packet contents. Print coverage interval */
/*     C           midpoint & radii first. */
/*     C */
/*                 WRITE (2,*) PKTDAT (1) */
/*                 WRITE (2,*) PKTDAT (2) */
/*     C */
/*     C           Decode numbers of coefficients. */
/*     C */
/*                 CALL ZZCK4D2I ( PKTDAT(3), QAVSIZ, CK4PCD, NCOEF ) */
/*     C */
/*     C           Print number of coefficients for Q0, Q1, Q2 and Q3. */
/*     C */
/*                 WRITE (2,FMT='(I2,6X,I2)') NCOEF( 1 ), NCOEF( 2 ) */
/*                 WRITE (2,FMT='(I2,6X,I2)') NCOEF( 3 ), NCOEF( 4 ) */
/*     C */
/*     C           Print number coefficients for AV1, AV2 and AV3. */
/*     C */
/*                 WRITE (2,FMT='(I2,6X,I2)') NCOEF( 5 ), NCOEF( 6 ) */
/*                 WRITE (2,FMT='(I2,6X,I2)') NCOEF( 7 ) */
/*     C */
/*     C           Print Cheby coefficients. */
/*     C */
/*                 LASTAD = 0 */

/*                 DO K = 1, QAVSIZ */
/*                    LASTAD = LASTAD + NCOEF( K ) */
/*                 END DO */

/*                 DO K = 4, LASTAD + 4 */
/*                    WRITE (2,*) PKTDAT (K) */
/*                 END DO */

/*              END DO */

/*           END IF */

/* $ Restrictions */

/*     1) The binary CK file containing the segment whose descriptor */
/*        was passed to this routine must be opened for read or write */
/*        access by either CKLPF, DAFOPR, or DAFOPW. */

/* $ Literature_References */

/*     None. */

/* $ Author_and_Institution */

/*     Y.K. Zaiko     (JPL) */
/*     B.V. Semenov   (JPL) */

/* $ Version */

/* -    SPICELIB Version 1.0.0, 05-MAY-1999 (YKZ) (BVS) */

/* -& */
/* $ Index_Entries */

/*     number of CK type_4 records */

/* -& */

/*     SPICELIB functions */


/*     Local parameters */


/*     Local variables */


/*     Standard SPICE error handling. */

    if (return_()) {
	return 0;
    } else {
	chkin_("CKNR04", (ftnlen)6);
    }

/*     Check whether our segment is of the type 4 by unpacking */
/*     descriptor and checking value of its third integer component. */

    dafus_(descr, &c__2, &c__6, dcd, icd);
    if (icd[2] != 4) {
	setmsg_("Data type of the segment should be 4: Passed descriptor sho"
		"ws type = #.", (ftnlen)71);
	errint_("#", &icd[2], (ftnlen)1);
	sigerr_("SPICE(CKWRONGDATATYPE)", (ftnlen)22);
	chkout_("CKNR04", (ftnlen)6);
	return 0;
    }

/*     The number of records (packets) can be obtained by a call to */
/*     SGMETA. This number is a meta item 12 (see sgparam.inc for */
/*     details.) */

    sgmeta_(handle, descr, &c__12, nrec);

/*     All done. */

    chkout_("CKNR04", (ftnlen)6);
    return 0;
} /* cknr04_ */

