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/* This file is part of Cloudy and is copyright (C)1978-2008 by Gary J. Ferland and
 * others.  For conditions of distribution and use see copyright notice in license.txt */
/*ParseCMB parse parameters from fireball command */
#include "cddefines.h"
#include "radius.h"
#include "rfield.h"
#include "parse.h"
#include "physconst.h"

void ParseCMB(double z, 
  long int *nqh, 
  realnum *ar1)
{
        double a, 
          rlogl;

        DEBUG_ENTRY( "ParseCMB()" );

        /* check that stack of shape and luminosity specifications
         * is parallel, stop if not - this happens is background comes
         * BETWEEN another set of shape and luminosity commands */
        if( rfield.nspec != *nqh )
        {
                fprintf( ioQQQ, " This command has come between a previous ordered pair of continuum shape and luminosity commands.\n Reorder the commands to complete each continuum specification before starting another.\n" );
                fprintf( ioQQQ, " Sorry.\n" );
                cdEXIT(EXIT_FAILURE);
        }

        /* put in a black body */
        strcpy( rfield.chSpType[rfield.nspec], "BLACK" );
        /* >>chng 03 may 23, CMB temp from 2.756 to 2.725 */
        rfield.slope[rfield.nspec] = (CMB_TEMP*(1. + z));
        rfield.cutoff[rfield.nspec][0] = 0.;
        rfield.cutoff[rfield.nspec][1] = 0.;
        strcpy( rfield.chSpNorm[*nqh], "LUMI" );
        a = log10(rfield.slope[rfield.nspec]);
        rlogl = log10(4.*STEFAN_BOLTZ) + 4.*a;
        strcpy( rfield.chRSpec[*nqh], "SQCM" );
        rfield.range[*nqh][0] = rfield.emm;
        rfield.range[*nqh][1] = rfield.egamry;
        rfield.totpow[*nqh] = rlogl;
        /* this is an isotropic radiation field */
        rfield.lgBeamed[*nqh] = false;

        /* set radius to very large value if not already set */
        /* >>chng 01 jul 24, from Radius == 0 to this, as per PvH comments */
        if( !radius.lgRadiusKnown )
        {
                *ar1 = (realnum)radius.rdfalt;
                radius.Radius = pow(10.,radius.rdfalt);
        }

        ++rfield.nspec;
        ++*nqh;
        if( *nqh >= LIMSPC )
        {
                fprintf( ioQQQ, " Too many continua entered; increase LIMSPC\n" );
                cdEXIT(EXIT_FAILURE);
        }

        /* this flag says that CMB has been set */
        rfield.lgCMB_set = true;
        return;
}

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