/* sypopi.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__1 = 1;

/* $Procedure      SYPOPI ( Pop a value from a particular symbol ) */
/* Subroutine */ int sypopi_(char *name__, char *tabsym, integer *tabptr, 
	integer *tabval, integer *value, logical *found, ftnlen name_len, 
	ftnlen tabsym_len)
{
    /* System generated locals */
    integer i__1;

    /* Local variables */
    integer nval, nptr, nsym;
    extern integer cardc_(char *, ftnlen), cardi_(integer *);
    extern /* Subroutine */ int chkin_(char *, ftnlen);
    extern integer sumai_(integer *, integer *);
    extern /* Subroutine */ int scardc_(integer *, char *, ftnlen), remlac_(
	    integer *, integer *, char *, integer *, ftnlen);
    extern integer bsrchc_(char *, integer *, char *, ftnlen, ftnlen);
    extern /* Subroutine */ int scardi_(integer *, integer *), remlai_(
	    integer *, integer *, integer *, integer *);
    integer locval;
    extern /* Subroutine */ int chkout_(char *, ftnlen);
    integer locsym;
    extern logical return_(void);

/* $ Abstract */

/*     Pop a value associated with a particular symbol in an integer */
/*     symbol table. The first value associated with the symbol is */
/*     removed, and subsequent values are moved forward. */

/* $ 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 */

/*     SYMBOLS */

/* $ Keywords */

/*     SYMBOLS */

/* $ Declarations */
/* $ Brief_I/O */

/*     VARIABLE  I/O  DESCRIPTION */
/*     --------  ---  -------------------------------------------------- */
/*     NAME       I   Name of the symbol whose associated value is to be */
/*                    popped. */

/*     TABSYM, */
/*     TABPTR, */
/*     TABVAL    I/O  Components of the symbol table. */

/*     VALUE      O   Value that was popped. */
/*     FOUND      O   True if the symbol exists, false if it does not. */

/* $ Detailed_Input */

/*     NAME       is the name of the symbol whose associated value is to */
/*                be popped. If NAME is not in the symbol table, FOUND */
/*                is false. */

/*     TABSYM, */
/*     TABPTR, */
/*     TABVAL     are the components of an integer symbol table. */

/* $ Detailed_Output */

/*     TABSYM, */
/*     TABPTR, */
/*     TABVAL     are the components of an integer symbol table. */
/*                The value is removed from the symbol table, and the */
/*                remaining values associated with the symbol are moved */
/*                forward in the value table. If no other values are */
/*                associated with the symbol, the symbol is removed from */
/*                the symbol table. */

/*     VALUE      is the value that was popped. This value was the first */
/*                value in the symbol table that was associated with the */
/*                symbol NAME. */

/*     FOUND      is true if NAME is in the symbol table, otherwise */
/*                it is false. */

/* $ Parameters */

/*     None. */

/* $ Files */

/*     None. */

/* $ Exceptions */

/*     None. */

/* $ Particulars */

/*     If there are no remaining values associated with the symbol */
/*     after VALUE has been popped, the symbol is removed from the */
/*     symbol table. */

/* $ Examples */

/*     The contents of the symbol table are: */

/*        books   -->   5 */
/*        erasers -->   6 */
/*        pencils -->  18 */
/*                     12 */
/*        pens    -->  10 */
/*                     12 */
/*                     24 */

/*     The call, */

/*     CALL SYPOPI ( 'pens', TABSYM, TABPTR, TABVAL, VALUE, FOUND ) */

/*     modifies the contents of the symbol table to be: */

/*        books   -->   5 */
/*        erasers -->   6 */
/*        pencils -->  18 */
/*                     12 */
/*        pens    -->  12 */
/*                     24 */

/*     FOUND is TRUE, and VALUE is 10. */


/*     The next call, */

/*     CALL SYPOPI ( 'erasers', TABSYM, TABPTR, TABVAL, VALUE, FOUND ) */

/*     modifies the contents of the symbol table to be: */

/*        books   -->   5 */
/*        pencils -->  18 */
/*                     12 */
/*        pens    -->  12 */
/*                     24 */

/*      FOUND is TRUE, and VALUE is 6. Note that because */
/*      "erasers" had only one value associated with it, it was removed */
/*      from the symbol table. */

/* $ Restrictions */

/*     None. */

/* $ Literature_References */

/*     None. */

/* $ Author_and_Institution */

/*     H.A. Neilan     (JPL) */
/*     I.M. Underwood  (JPL) */

/* $ Version */

/* -     SPICELIB Version 1.0.2, 10-DEC-2002 (LSE) */

/*         Fixed typo (FISSION') in header */

/* -     SPICELIB Version 1.0.1, 10-MAR-1992 (WLT) */

/*         Comment section for permuted index source lines was added */
/*         following the header. */

/* -     SPICELIB Version 1.0.0, 31-JAN-1990 (IMU) (HAN) */

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

/*     pop a value from a particular symbol */

/* -& */

/*     SPICELIB functions */


/*     Local variables */


/*     Standard SPICE error handling. */

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

/*     How many symbols to start with? */

    nsym = cardc_(tabsym, tabsym_len);
    nptr = cardi_(tabptr);
    nval = cardi_(tabval);

/*     Is this symbol even in the table? */

    locsym = bsrchc_(name__, &nsym, tabsym + tabsym_len * 6, name_len, 
	    tabsym_len);

/*     If it's not in the table, it's definitely a problem. */

    if (locsym == 0) {
	*found = FALSE_;

/*     If it is in the table, we can proceed without fear of overflow. */

    } else {
	*found = TRUE_;

/*        Begin by saving and removing the initial value for this */
/*        symbol from the value table. */

	i__1 = locsym - 1;
	locval = sumai_(&tabptr[6], &i__1) + 1;
	*value = tabval[locval + 5];
	remlai_(&c__1, &locval, &tabval[6], &nval);
	scardi_(&nval, tabval);

/*        If this was the sole value for the symbol, remove the */
/*        symbol from the name and pointer tables. Otherwise just */
/*        decrement the dimension. */

	if (tabptr[locsym + 5] == 1) {
	    remlac_(&c__1, &locsym, tabsym + tabsym_len * 6, &nsym, 
		    tabsym_len);
	    scardc_(&nsym, tabsym, tabsym_len);
	    remlai_(&c__1, &locsym, &tabptr[6], &nptr);
	    scardi_(&nptr, tabptr);
	} else {
	    --tabptr[locsym + 5];
	}
    }
    chkout_("SYPOPI", (ftnlen)6);
    return 0;
} /* sypopi_ */

