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    /*
    
    $Log$
    
    Revision 1.16  2004/06/26 03:50:14  markster
    Merge source cleanups (bug #1911)
    
    
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    Revision 1.15  2003/09/19 01:20:22  markster
    Code cleanups (bug #66)
    
    Revision 1.2  2003/09/19 01:20:22  markster
    Code cleanups (bug #66)
    
    
    Revision 1.1.1.1  2003/02/12 13:59:14  matteo
    mer feb 12 14:56:57 CET 2003
    
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    Revision 1.2  2000/01/05 08:20:39  markster
    Some OSS fixes and a few lpc changes to make it actually work
    
     * Revision 1.2  1996/08/20  20:22:39  jaf
     * Removed all static local variables that were SAVE'd in the Fortran
     * code, and put them in struct lpc10_decoder_state that is passed as an
     * argument.
     *
     * Removed init function, since all initialization is now done in
     * init_lpc10_decoder_state().
     *
     * Revision 1.1  1996/08/19  22:32:38  jaf
     * Initial revision
     *
    
    */
    
    /*  -- translated by f2c (version 19951025).
       You must link the resulting object file with the libraries:
    	-lf2c -lm   (in that order)
    */
    
    #include "f2c.h"
    
    
    #ifdef P_R_O_T_O_T_Y_P_E_S
    extern int decode_(integer *ipitv, integer *irms, integer *irc, integer *voice, integer *pitch, real *rms, real *rc, struct lpc10_decoder_state *st);
    /* comlen contrl_ 12 */
    /*:ref: ham84_ 14 3 4 4 4 */
    /*:ref: median_ 4 3 4 4 4 */
    #endif
    
    
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    /* Common Block Declarations */
    
    extern struct {
        integer order, lframe;
        logical corrp;
    } contrl_;
    
    #define contrl_1 contrl_
    
    /* Table of constant values */
    
    static integer c__2 = 2;
    
    /* ***************************************************************** */
    
    /* 	DECODE Version 54 */
    
    /* $Log$
    
     * Revision 1.16  2004/06/26 03:50:14  markster
     * Merge source cleanups (bug #1911)
    
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     *
    
     * Revision 1.15  2003/09/19 01:20:22  markster
     * Code cleanups (bug #66)
     * 
     * Revision 1.2  2003/09/19 01:20:22  markster
     * Code cleanups (bug #66)
     *
     * Revision 1.1.1.1  2003/02/12 13:59:14  matteo
     * mer feb 12 14:56:57 CET 2003
     *
     * Revision 1.2  2000/01/05 08:20:39  markster
     * Some OSS fixes and a few lpc changes to make it actually work
     *
    
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     * Revision 1.2  1996/08/20  20:22:39  jaf
     * Removed all static local variables that were SAVE'd in the Fortran
     * code, and put them in struct lpc10_decoder_state that is passed as an
     * argument.
     *
     * Removed init function, since all initialization is now done in
     * init_lpc10_decoder_state().
     *
     * Revision 1.1  1996/08/19  22:32:38  jaf
     * Initial revision
     * */
    /* Revision 1.5  1996/05/23  20:06:03  jaf */
    /* Assigned PITCH a "default" value on the first call, since otherwise it */
    /* would be left uninitialized. */
    
    /* Revision 1.4  1996/03/26  19:35:18  jaf */
    /* Commented out trace statements. */
    
    /* Revision 1.3  1996/03/21  21:10:50  jaf */
    /* Added entry INITDECODE to reinitialize the local state of subroutine */
    /* DECODE. */
    
    /* Revision 1.2  1996/03/21  21:04:50  jaf */
    /* Determined which local variables should be saved from one invocation */
    /* to the next, and guessed initial values for some that should have been */
    /* saved, but weren't given initial values.  Many of the arrays are */
    /* "constants", and many local variables are only used if the "global" */
    /* variable CORRP is .TRUE. */
    
    /* Added comments explaining which indices of array arguments are read or */
    /* written. */
    
    /* Revision 1.1  1996/02/12 03:21:10  jaf */
    /* Initial revision */
    
    
    /* ***************************************************************** */
    
    /*   This subroutine provides error correction and decoding */
    /*   for all LPC parameters */
    
    /* Input: */
    /*  IPITV  - Index value of pitch */
    /*  IRMS   - Coded Energy */
    /*  CORRP  - Error correction: */
    /*    If FALSE, parameters are decoded directly with no delay.  If TRUE, */
    /*    most important parameter bits are protected by Hamming code and */
    /*    median smoothed.  This requires an additional frame of delay. */
    /* Input/Output: */
    /*  IRC    - Coded Reflection Coefficients */
    /*           Indices 1 through ORDER always read, then written. */
    /* Output: */
    /*  VOICE  - Half frame voicing decisions */
    /*           Indices 1 through 2 written. */
    /*  PITCH  - Decoded pitch */
    /*  RMS    - Energy */
    /*  RC     - Reflection coefficients */
    /*           Indices 1 through ORDER written. */
    
    /*  NOTE: Zero RC's should be done more directly, but this would affect */
    /*   coded parameter printout. */
    
    /* This subroutine maintains local state from one call to the next.  If */
    /* you want to switch to using a new audio stream for this filter, or */
    /* reinitialize its state for any other reason, call the ENTRY */
    /* INITDECODE. */
    
    /* Subroutine */ int decode_(integer *ipitv, integer *irms, 
    	integer *irc, integer *voice, integer *pitch, real *rms, real *rc,
    			     struct lpc10_decoder_state *st)
    {
        /* Initialized data */
    
        logical *first;
        static integer ethrs = 2048;
        static integer ethrs1 = 128;
        static integer ethrs2 = 1024;
        static integer ethrs3 = 2048;
        static integer ivtab[32] = { 24960,24960,24960,24960,25480,25480,25483,
    	    25480,16640,1560,1560,1560,16640,1816,1563,1560,24960,24960,24859,
    	    24856,26001,25881,25915,25913,1560,1560,7800,3640,1561,1561,3643,
    	    3641 };
        static real corth[32]	/* was [4][8] */ = { 32767.f,10.f,5.f,0.f,
    	    32767.f,8.f,4.f,0.f,32.f,6.4f,3.2f,0.f,32.f,6.4f,3.2f,0.f,32.f,
    	    11.2f,6.4f,0.f,32.f,11.2f,6.4f,0.f,16.f,5.6f,3.2f,0.f,16.f,5.6f,
    	    3.2f,0.f };
        static integer detau[128] = { 0,0,0,3,0,3,3,31,0,3,3,21,3,3,29,30,0,3,3,
    	    20,3,25,27,26,3,23,58,22,3,24,28,3,0,3,3,3,3,39,33,32,3,37,35,36,
    	    3,38,34,3,3,42,46,44,50,40,48,3,54,3,56,3,52,3,3,1,0,3,3,108,3,78,
    	    100,104,3,84,92,88,156,80,96,3,3,74,70,72,66,76,68,3,62,3,60,3,64,
    	    3,3,1,3,116,132,112,148,152,3,3,140,3,136,3,144,3,3,1,124,120,128,
    	    3,3,3,3,1,3,3,3,1,3,1,1,1 };
        static integer rmst[64] = { 1024,936,856,784,718,656,600,550,502,460,420,
    	    384,352,328,294,270,246,226,206,188,172,158,144,132,120,110,102,
    	    92,84,78,70,64,60,54,50,46,42,38,34,32,30,26,24,22,20,18,17,16,15,
    	    14,13,12,11,10,9,8,7,6,5,4,3,2,1,0 };
        static integer detab7[32] = { 4,11,18,25,32,39,46,53,60,66,72,77,82,87,92,
    	    96,101,104,108,111,114,115,117,119,121,122,123,124,125,126,127,
    	    127 };
        static real descl[8] = { .6953f,.625f,.5781f,.5469f,.5312f,.5391f,.4688f,
    	    .3828f };
        integer *ivp2h;
        static integer deadd[8] = { 1152,-2816,-1536,-3584,-1280,-2432,768,-1920 }
    	    ;
        static integer qb[8] = { 511,511,1023,1023,1023,1023,2047,4095 };
        static integer nbit[10] = { 8,8,5,5,4,4,4,4,3,2 };
        static integer zrc[10] = { 0,0,0,0,0,3,0,2,0,0 };
        static integer bit[5] = { 2,4,8,16,32 };
        integer *iovoic;
        integer *iavgp;
        integer *iptold;
        integer *erate;
        integer *drc;
        integer *dpit;
        integer *drms;
    
        /* System generated locals */
        integer i__1, i__2;
    
        /* Builtin functions */
        integer pow_ii(integer *, integer *);
    
        /* Local variables */
        extern /* Subroutine */ int ham84_(integer *, integer *, integer *);
        integer ipit, iout, i__, icorf, index, ivoic, ixcor, i1, i2, i4;
        extern integer median_(integer *, integer *, integer *);
        integer ishift, errcnt, lsb;
    
    /* $Log$
    
     * Revision 1.16  2004/06/26 03:50:14  markster
     * Merge source cleanups (bug #1911)
    
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     *
    
     * Revision 1.15  2003/09/19 01:20:22  markster
     * Code cleanups (bug #66)
     *
     * Revision 1.2  2003/09/19 01:20:22  markster
     * Code cleanups (bug #66)
     *
     * Revision 1.1.1.1  2003/02/12 13:59:14  matteo
     * mer feb 12 14:56:57 CET 2003
     *
     * Revision 1.2  2000/01/05 08:20:39  markster
     * Some OSS fixes and a few lpc changes to make it actually work
     *
    
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     * Revision 1.2  1996/08/20  20:22:39  jaf
     * Removed all static local variables that were SAVE'd in the Fortran
     * code, and put them in struct lpc10_decoder_state that is passed as an
     * argument.
     *
     * Removed init function, since all initialization is now done in
     * init_lpc10_decoder_state().
     *
     * Revision 1.1  1996/08/19  22:32:38  jaf
     * Initial revision
     * */
    /* Revision 1.3  1996/03/29  22:03:47  jaf */
    /* Removed definitions for any constants that were no longer used. */
    
    /* Revision 1.2  1996/03/26  19:34:33  jaf */
    /* Added comments indicating which constants are not needed in an */
    /* application that uses the LPC-10 coder. */
    
    /* Revision 1.1  1996/02/07  14:43:51  jaf */
    /* Initial revision */
    
    /*   LPC Configuration parameters: */
    /* Frame size, Prediction order, Pitch period */
    /*       Arguments */
    /* $Log$
    
     * Revision 1.16  2004/06/26 03:50:14  markster
     * Merge source cleanups (bug #1911)
    
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     *
    
     * Revision 1.15  2003/09/19 01:20:22  markster
     * Code cleanups (bug #66)
     *
     * Revision 1.2  2003/09/19 01:20:22  markster
     * Code cleanups (bug #66)
     *
     * Revision 1.1.1.1  2003/02/12 13:59:14  matteo
     * mer feb 12 14:56:57 CET 2003
     *
     * Revision 1.2  2000/01/05 08:20:39  markster
     * Some OSS fixes and a few lpc changes to make it actually work
     *
    
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     * Revision 1.2  1996/08/20  20:22:39  jaf
     * Removed all static local variables that were SAVE'd in the Fortran
     * code, and put them in struct lpc10_decoder_state that is passed as an
     * argument.
     *
     * Removed init function, since all initialization is now done in
     * init_lpc10_decoder_state().
     *
     * Revision 1.1  1996/08/19  22:32:38  jaf
     * Initial revision
     * */
    /* Revision 1.3  1996/03/29  22:05:55  jaf */
    /* Commented out the common block variables that are not needed by the */
    /* embedded version. */
    
    /* Revision 1.2  1996/03/26  19:34:50  jaf */
    /* Added comments indicating which constants are not needed in an */
    /* application that uses the LPC-10 coder. */
    
    /* Revision 1.1  1996/02/07  14:44:09  jaf */
    /* Initial revision */
    
    /*   LPC Processing control variables: */
    
    /* *** Read-only: initialized in setup */
    
    /*  Files for Speech, Parameter, and Bitstream Input & Output, */
    /*    and message and debug outputs. */
    
    /* Here are the only files which use these variables: */
    
    /* lpcsim.f setup.f trans.f error.f vqsetup.f */
    
    /* Many files which use fdebug are not listed, since it is only used in */
    /* those other files conditionally, to print trace statements. */
    /* 	integer fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
    /*  LPC order, Frame size, Quantization rate, Bits per frame, */
    /*    Error correction */
    /* Subroutine SETUP is the only place where order is assigned a value, */
    /* and that value is 10.  It could increase efficiency 1% or so to */
    /* declare order as a constant (i.e., a Fortran PARAMETER) instead of as 
    */
    /* a variable in a COMMON block, since it is used in many places in the */
    /* core of the coding and decoding routines.  Actually, I take that back. 
    */
    /* At least when compiling with f2c, the upper bound of DO loops is */
    /* stored in a local variable before the DO loop begins, and then that is 
    */
    /* compared against on each iteration. */
    /* Similarly for lframe, which is given a value of MAXFRM in SETUP. */
    /* Similarly for quant, which is given a value of 2400 in SETUP.  quant */
    /* is used in only a few places, and never in the core coding and */
    /* decoding routines, so it could be eliminated entirely. */
    /* nbits is similar to quant, and is given a value of 54 in SETUP. */
    /* corrp is given a value of .TRUE. in SETUP, and is only used in the */
    /* subroutines ENCODE and DECODE.  It doesn't affect the speed of the */
    /* coder significantly whether it is .TRUE. or .FALSE., or whether it is 
    */
    /* a constant or a variable, since it is only examined once per frame. */
    /* Leaving it as a variable that is set to .TRUE.  seems like a good */
    /* idea, since it does enable some error-correction capability for */
    /* unvoiced frames, with no change in the coding rate, and no noticeable 
    */
    /* quality difference in the decoded speech. */
    /* 	integer quant, nbits */
    /* *** Read/write: variables for debugging, not needed for LPC algorithm 
    */
    
    /*  Current frame, Unstable frames, Output clip count, Max onset buffer, 
    */
    /*    Debug listing detail level, Line count on listing page */
    
    /* nframe is not needed for an embedded LPC10 at all. */
    /* nunsfm is initialized to 0 in SETUP, and incremented in subroutine */
    /* ERROR, which is only called from RCCHK.  When LPC10 is embedded into */
    /* an application, I would recommend removing the call to ERROR in RCCHK, 
    */
    /* and remove ERROR and nunsfm completely. */
    /* iclip is initialized to 0 in SETUP, and incremented in entry SWRITE in 
    */
    /* sread.f.  When LPC10 is embedded into an application, one might want */
    /* to cause it to be incremented in a routine that takes the output of */
    /* SYNTHS and sends it to an audio device.  It could be optionally */
    /* displayed, for those that might want to know what it is. */
    /* maxosp is never initialized to 0 in SETUP, although it probably should 
    */
    /* be, and it is updated in subroutine ANALYS.  I doubt that its value */
    /* would be of much interest to an application in which LPC10 is */
    /* embedded. */
    /* listl and lincnt are not needed for an embedded LPC10 at all. */
    /* 	integer nframe, nunsfm, iclip, maxosp, listl, lincnt */
    /* 	common /contrl/ fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
    /* 	common /contrl/ quant, nbits */
    /* 	common /contrl/ nframe, nunsfm, iclip, maxosp, listl, lincnt */
    /*       Function return value definitions */
    
    /*       Parameters/constants */
    
    /*       The variables below that are not Fortran PARAMETER's are */
    /*       initialized with DATA statements, and then never modified. */
    /*       The following are used regardless of CORRP's value. */
    
    /*       DETAU, NBIT, QB, DEADD, DETAB7, RMST, DESCL */
    
    /*       The following are used only if CORRP is .TRUE. */
    
    /*       ETHRS, ETHRS1, ETHRS2, ETHRS3, IVTAB, BIT, CORTH, ZRC */
    
    /*       Local variables that need not be saved */
    
    /*       The following are used regardless of CORRP's value */
    /*       The following are used only if CORRP is .TRUE. */
    
    /*       Local state */
    
    /*       The following are used regardless of CORRP's value */
    /*       The following are used only if CORRP is .TRUE. */
    /*       I am guessing the initial values for IVP2H, IOVOIC, DRC, DPIT, */
    /*       and DRMS.  They should be checked to see if they are reasonable. 
    */
    /*       I'm also guessing for ERATE, but I think 0 is the right initial 
    */
    /*       value. */
        /* Parameter adjustments */
        if (irc) {
    	--irc;
    	}
        if (voice) {
    	--voice;
    	}
        if (rc) {
    	--rc;
    	}
    
        /* Function Body */
    
        iptold = &(st->iptold);
        first = &(st->first);
        ivp2h = &(st->ivp2h);
        iovoic = &(st->iovoic);
        iavgp = &(st->iavgp);
        erate = &(st->erate);
        drc = &(st->drc[0]);
        dpit = &(st->dpit[0]);
        drms = &(st->drms[0]);
    
    /* DATA statements for "constants" defined above. */
    /* 	IF (LISTL.GE.3) WRITE(FDEBUG,800) IPITV,IRMS,(IRC(J),J=1,ORDER) */
    /* 800	FORMAT(1X,' <<ERRCOR IN>>',T32,6X,I6,I5,T50,10I8) */
    /*  If no error correction, do pitch and voicing then jump to decode */
        i4 = detau[*ipitv];
        if (! contrl_1.corrp) {
    	voice[1] = 1;
    	voice[2] = 1;
    	if (*ipitv <= 1) {
    	    voice[1] = 0;
    	}
    	if (*ipitv == 0 || *ipitv == 2) {
    	    voice[2] = 0;
    	}
    	*pitch = i4;
    	if (*pitch <= 4) {
    	    *pitch = *iptold;
    	}
    	if (voice[1] == 1 && voice[2] == 1) {
    	    *iptold = *pitch;
    	}
    	if (voice[1] != voice[2]) {
    	    *pitch = *iptold;
    	}
    	goto L900;
        }
    /*  Do error correction pitch and voicing */
        if (i4 > 4) {
    	dpit[0] = i4;
    	ivoic = 2;
    	*iavgp = (*iavgp * 15 + i4 + 8) / 16;
        } else {
    	ivoic = i4;
    	dpit[0] = *iavgp;
        }
        drms[0] = *irms;
        i__1 = contrl_1.order;
        for (i__ = 1; i__ <= i__1; ++i__) {
    	drc[i__ * 3 - 3] = irc[i__];
        }
    /*  Determine index to IVTAB from V/UV decision */
    /*  If error rate is high then use alternate table */
        index = (*ivp2h << 4) + (*iovoic << 2) + ivoic + 1;
        i1 = ivtab[index - 1];
        ipit = i1 & 3;
        icorf = i1 / 8;
        if (*erate < ethrs) {
    	icorf /= 64;
        }
    /*  Determine error rate:  4=high    1=low */
        ixcor = 4;
        if (*erate < ethrs3) {
    	ixcor = 3;
        }
        if (*erate < ethrs2) {
    	ixcor = 2;
        }
        if (*erate < ethrs1) {
    	ixcor = 1;
        }
    /*  Voice/unvoice decision determined from bits 0 and 1 of IVTAB */
        voice[1] = icorf / 2 & 1;
        voice[2] = icorf & 1;
    /*  Skip decoding on first frame because present data not yet available */
        if (*first) {
    	*first = FALSE_;
    /*          Assign PITCH a "default" value on the first call, since */
    /*          otherwise it would be left uninitialized.  The two lines 
    */
    /*          below were copied from above, since it seemed like a */
    /*          reasonable thing to do for the first call. */
    	*pitch = i4;
    	if (*pitch <= 4) {
    	    *pitch = *iptold;
    	}
    	goto L500;
        }
    /*  If bit 4 of ICORF is set then correct RMS and RC(1) - RC(4). */
    /*    Determine error rate and correct errors using a Hamming 8,4 code */
    /*    during transition or unvoiced frame.  If IOUT is negative, */
    /*    more than 1 error occurred, use previous frame's parameters. */
        if ((icorf & bit[3]) != 0) {
    	errcnt = 0;
    	lsb = drms[1] & 1;
    	index = (drc[22] << 4) + drms[1] / 2;
    	ham84_(&index, &iout, &errcnt);
    	drms[1] = drms[2];
    	if (iout >= 0) {
    	    drms[1] = (iout << 1) + lsb;
    	}
    	for (i__ = 1; i__ <= 4; ++i__) {
    	    if (i__ == 1) {
    		i1 = ((drc[25] & 7) << 1) + (drc[28] & 1);
    	    } else {
    		i1 = drc[(9 - i__) * 3 - 2] & 15;
    	    }
    	    i2 = drc[(5 - i__) * 3 - 2] & 31;
    	    lsb = i2 & 1;
    	    index = (i1 << 4) + i2 / 2;
    	    ham84_(&index, &iout, &errcnt);
    	    if (iout >= 0) {
    		iout = (iout << 1) + lsb;
    		if ((iout & 16) == 16) {
    		    iout += -32;
    		}
    	    } else {
    		iout = drc[(5 - i__) * 3 - 1];
    	    }
    	    drc[(5 - i__) * 3 - 2] = iout;
    	}
    /*  Determine error rate */
    
    	*erate = (integer)(*erate * .96875f + errcnt * 102);
    
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        }
    /*  Get unsmoothed RMS, RC's, and PITCH */
        *irms = drms[1];
        i__1 = contrl_1.order;
        for (i__ = 1; i__ <= i__1; ++i__) {
    	irc[i__] = drc[i__ * 3 - 2];
        }
        if (ipit == 1) {
    	dpit[1] = dpit[2];
        }
        if (ipit == 3) {
    	dpit[1] = dpit[0];
        }
        *pitch = dpit[1];
    /*  If bit 2 of ICORF is set then smooth RMS and RC's, */
        if ((icorf & bit[1]) != 0) {
    	if ((i__1 = drms[1] - drms[0], (real) abs(i__1)) >= corth[ixcor + 3] 
    		&& (i__2 = drms[1] - drms[2], (real) abs(i__2)) >= corth[
    		ixcor + 3]) {
    	    *irms = median_(&drms[2], &drms[1], drms);
    	}
    	for (i__ = 1; i__ <= 6; ++i__) {
    	    if ((i__1 = drc[i__ * 3 - 2] - drc[i__ * 3 - 3], (real) abs(i__1))
    
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    		     >= corth[ixcor + ((i__ + 2) << 2) - 5] && (i__2 = drc[i__ *
    
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    		     3 - 2] - drc[i__ * 3 - 1], (real) abs(i__2)) >= corth[
    
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    		    ixcor + ((i__ + 2) << 2) - 5]) {
    
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    		irc[i__] = median_(&drc[i__ * 3 - 1], &drc[i__ * 3 - 2], &drc[
    			i__ * 3 - 3]);
    	    }
    	}
        }
    /*  If bit 3 of ICORF is set then smooth pitch */
        if ((icorf & bit[2]) != 0) {
    	if ((i__1 = dpit[1] - dpit[0], (real) abs(i__1)) >= corth[ixcor - 1] 
    		&& (i__2 = dpit[1] - dpit[2], (real) abs(i__2)) >= corth[
    		ixcor - 1]) {
    	    *pitch = median_(&dpit[2], &dpit[1], dpit);
    	}
        }
    /*  If bit 5 of ICORF is set then RC(5) - RC(10) are loaded with */
    /*  values so that after quantization bias is removed in decode */
    /*  the values will be zero. */
    L500:
        if ((icorf & bit[4]) != 0) {
    	i__1 = contrl_1.order;
    	for (i__ = 5; i__ <= i__1; ++i__) {
    	    irc[i__] = zrc[i__ - 1];
    	}
        }
    /*  House keeping  - one frame delay */
        *iovoic = ivoic;
        *ivp2h = voice[2];
        dpit[2] = dpit[1];
        dpit[1] = dpit[0];
        drms[2] = drms[1];
        drms[1] = drms[0];
        i__1 = contrl_1.order;
        for (i__ = 1; i__ <= i__1; ++i__) {
    	drc[i__ * 3 - 1] = drc[i__ * 3 - 2];
    	drc[i__ * 3 - 2] = drc[i__ * 3 - 3];
        }
    L900:
    /* 	IF (LISTL.GE.3)WRITE(FDEBUG,801)VOICE,PITCH,IRMS,(IRC(J),J=1,ORDER) */
    /* 801	FORMAT(1X,'<<ERRCOR OUT>>',T32,2I3,I6,I5,T50,10I8) */
    /*   Decode RMS */
        *irms = rmst[(31 - *irms) * 2];
    /*  Decode RC(1) and RC(2) from log-area-ratios */
    /*  Protect from illegal coded value (-16) caused by bit errors */
        for (i__ = 1; i__ <= 2; ++i__) {
    	i2 = irc[i__];
    	i1 = 0;
    	if (i2 < 0) {
    	    i1 = 1;
    	    i2 = -i2;
    	    if (i2 > 15) {
    		i2 = 0;
    	    }
    	}
    	i2 = detab7[i2 * 2];
    	if (i1 == 1) {
    	    i2 = -i2;
    	}
    	ishift = 15 - nbit[i__ - 1];
    	irc[i__] = i2 * pow_ii(&c__2, &ishift);
        }
    /*  Decode RC(3)-RC(10) to sign plus 14 bits */
        i__1 = contrl_1.order;
        for (i__ = 3; i__ <= i__1; ++i__) {
    	i2 = irc[i__];
    	ishift = 15 - nbit[i__ - 1];
    	i2 *= pow_ii(&c__2, &ishift);
    	i2 += qb[i__ - 3];
    
    	irc[i__] = (integer)(i2 * descl[i__ - 3] + deadd[i__ - 3]);
    
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        }
    /* 	IF (LISTL.GE.3) WRITE(FDEBUG,811) IRMS, (IRC(I),I=1,ORDER) */
    /* 811	FORMAT(1X,'<<DECODE OUT>>',T45,I4,1X,10I8) */
    /*  Scale RMS and RC's to reals */
        *rms = (real) (*irms);
        i__1 = contrl_1.order;
        for (i__ = 1; i__ <= i__1; ++i__) {
    	rc[i__] = irc[i__] / 16384.f;
        }
        return 0;
    } /* decode_ */