//=====================================================================
//	MAIN FUNCTION
//=====================================================================
void fin(	fp *initvalu,
				int initvalu_offset_ecc,
				int initvalu_offset_Dyad,
				int initvalu_offset_SL,
				int initvalu_offset_Cyt,
				fp *parameter,
				fp *finavalu,
				fp JCaDyad,
				fp JCaSL,
				fp JCaCyt){

//=====================================================================
//	VARIABLES
//=====================================================================

	// decoded input parameters
	fp BtotDyad;																		//
	fp CaMKIItotDyad;																	//

	// compute variables
	fp Vmyo;																			// [L]
	fp Vdyad;																			// [L]
	fp VSL;																				// [L]
	fp kDyadSL;																			// [L/msec]
	fp kSLmyo;																			// [L/msec]
	fp k0Boff;																			// [s^-1] 
	fp k0Bon;																			// [uM^-1 s^-1] kon = koff/Kd
	fp k2Boff;																			// [s^-1] 
	fp k2Bon;																			// [uM^-1 s^-1]
	fp k4Boff;																			// [s^-1]
	fp k4Bon;																			// [uM^-1 s^-1]
	fp CaMtotDyad;
	fp Bdyad;																			// [uM dyad]
	fp J_cam_dyadSL;																	// [uM/msec dyad]
	fp J_ca2cam_dyadSL;																	// [uM/msec dyad]
	fp J_ca4cam_dyadSL;																	// [uM/msec dyad]
	fp J_cam_SLmyo;																		// [umol/msec]
	fp J_ca2cam_SLmyo;																	// [umol/msec]
	fp J_ca4cam_SLmyo;																	// [umol/msec]

//=====================================================================
//	COMPUTATION
//=====================================================================

	// decoded input parameters
	BtotDyad      = parameter[2];														//
	CaMKIItotDyad = parameter[3];														//

	// set variables
	Vmyo = 2.1454e-11;																	// [L]
	Vdyad = 1.7790e-14;																	// [L]
	VSL = 6.6013e-13;																	// [L]
	kDyadSL = 3.6363e-16;																// [L/msec]
	kSLmyo = 8.587e-15;																	// [L/msec]
	k0Boff = 0.0014;																	// [s^-1] 
	k0Bon = k0Boff/0.2;																	// [uM^-1 s^-1] kon = koff/Kd
	k2Boff = k0Boff/100;																// [s^-1] 
	k2Bon = k0Bon;																		// [uM^-1 s^-1]
	k4Boff = k2Boff;																	// [s^-1]
	k4Bon = k0Bon;																		// [uM^-1 s^-1]

	// ADJUST ECC incorporate Ca buffering from CaM, convert JCaCyt from uM/msec to mM/msec
	finavalu[initvalu_offset_ecc+35] = finavalu[initvalu_offset_ecc+35] + 1e-3*JCaDyad;
	finavalu[initvalu_offset_ecc+36] = finavalu[initvalu_offset_ecc+36] + 1e-3*JCaSL;
	finavalu[initvalu_offset_ecc+37] = finavalu[initvalu_offset_ecc+37] + 1e-3*JCaCyt; 

	// incorporate CaM diffusion between compartments
	CaMtotDyad = initvalu[initvalu_offset_Dyad+0]
			   + initvalu[initvalu_offset_Dyad+1]
			   + initvalu[initvalu_offset_Dyad+2]
			   + initvalu[initvalu_offset_Dyad+3]
			   + initvalu[initvalu_offset_Dyad+4]
			   + initvalu[initvalu_offset_Dyad+5]
			   + CaMKIItotDyad * (  initvalu[initvalu_offset_Dyad+6]
								  + initvalu[initvalu_offset_Dyad+7]
								  + initvalu[initvalu_offset_Dyad+8]
								  + initvalu[initvalu_offset_Dyad+9])
			   + initvalu[initvalu_offset_Dyad+12]
			   + initvalu[initvalu_offset_Dyad+13]
			   + initvalu[initvalu_offset_Dyad+14];
	Bdyad = BtotDyad - CaMtotDyad;																				// [uM dyad]
	J_cam_dyadSL = 1e-3 * (  k0Boff*initvalu[initvalu_offset_Dyad+0] - k0Bon*Bdyad*initvalu[initvalu_offset_SL+0]);			// [uM/msec dyad]
	J_ca2cam_dyadSL = 1e-3 * (  k2Boff*initvalu[initvalu_offset_Dyad+1] - k2Bon*Bdyad*initvalu[initvalu_offset_SL+1]);		// [uM/msec dyad]
	J_ca4cam_dyadSL = 1e-3 * (  k2Boff*initvalu[initvalu_offset_Dyad+2] - k4Bon*Bdyad*initvalu[initvalu_offset_SL+2]);		// [uM/msec dyad]
	
	J_cam_SLmyo = kSLmyo * (  initvalu[initvalu_offset_SL+0] - initvalu[initvalu_offset_Cyt+0]);								// [umol/msec]
	J_ca2cam_SLmyo = kSLmyo * (  initvalu[initvalu_offset_SL+1] - initvalu[initvalu_offset_Cyt+1]);							// [umol/msec]
	J_ca4cam_SLmyo = kSLmyo * (  initvalu[initvalu_offset_SL+2] - initvalu[initvalu_offset_Cyt+2]);							// [umol/msec]
	
	// ADJUST CAM Dyad 
	finavalu[initvalu_offset_Dyad+0] = finavalu[initvalu_offset_Dyad+0] - J_cam_dyadSL;
	finavalu[initvalu_offset_Dyad+1] = finavalu[initvalu_offset_Dyad+1] - J_ca2cam_dyadSL;
	finavalu[initvalu_offset_Dyad+2] = finavalu[initvalu_offset_Dyad+2] - J_ca4cam_dyadSL;
	
	// ADJUST CAM Sl
	finavalu[initvalu_offset_SL+0] = finavalu[initvalu_offset_SL+0] + J_cam_dyadSL*Vdyad/VSL - J_cam_SLmyo/VSL;
	finavalu[initvalu_offset_SL+1] = finavalu[initvalu_offset_SL+1] + J_ca2cam_dyadSL*Vdyad/VSL - J_ca2cam_SLmyo/VSL;
	finavalu[initvalu_offset_SL+2] = finavalu[initvalu_offset_SL+2] + J_ca4cam_dyadSL*Vdyad/VSL - J_ca4cam_SLmyo/VSL;

	// ADJUST CAM Cyt 
	finavalu[initvalu_offset_Cyt+0] = finavalu[initvalu_offset_Cyt+0] + J_cam_SLmyo/Vmyo;
	finavalu[initvalu_offset_Cyt+1] = finavalu[initvalu_offset_Cyt+1] + J_ca2cam_SLmyo/Vmyo;
	finavalu[initvalu_offset_Cyt+2] = finavalu[initvalu_offset_Cyt+2] + J_ca4cam_SLmyo/Vmyo;

}
