function [VOI, STATES, ALGEBRAIC, CONSTANTS] = mainFunction()
    % This is the "main function".  In Matlab, things work best if you rename this function to match the filename.
   [VOI, STATES, ALGEBRAIC, CONSTANTS] = solveModel();
end

function [algebraicVariableCount] = getAlgebraicVariableCount() 
    % Used later when setting a global variable with the number of algebraic variables.
    % Note: This is not the "main method".  
    algebraicVariableCount =15;
end
% There are a total of 10 entries in each of the rate and state variable arrays.
% There are a total of 38 entries in the constant variable array.
%

function [VOI, STATES, ALGEBRAIC, CONSTANTS] = solveModel()
    % Create ALGEBRAIC of correct size
    global algebraicVariableCount;  algebraicVariableCount = getAlgebraicVariableCount();
    % Initialise constants and state variables
    [INIT_STATES, CONSTANTS] = initConsts;

    % Set timespan to solve over 
    tspan = [0, 10];

    % Set numerical accuracy options for ODE solver
    options = odeset('RelTol', 1e-06, 'AbsTol', 1e-06, 'MaxStep', 1);

    % Solve model with ODE solver
    [VOI, STATES] = ode15s(@(VOI, STATES)computeRates(VOI, STATES, CONSTANTS), tspan, INIT_STATES, options);

    % Compute algebraic variables
    [RATES, ALGEBRAIC] = computeRates(VOI, STATES, CONSTANTS);
    ALGEBRAIC = computeAlgebraic(ALGEBRAIC, CONSTANTS, STATES, VOI);

    % Plot state variables against variable of integration
    [LEGEND_STATES, LEGEND_ALGEBRAIC, LEGEND_VOI, LEGEND_CONSTANTS] = createLegends();
    figure();
    plot(VOI, STATES);
    xlabel(LEGEND_VOI);
    l = legend(LEGEND_STATES);
    set(l,'Interpreter','none');
end

function [LEGEND_STATES, LEGEND_ALGEBRAIC, LEGEND_VOI, LEGEND_CONSTANTS] = createLegends()
    LEGEND_STATES = ''; LEGEND_ALGEBRAIC = ''; LEGEND_VOI = ''; LEGEND_CONSTANTS = '';
    LEGEND_VOI = strpad('time in component environment (second)');
    LEGEND_STATES(:,1) = strpad('ATP_cyt in component ATP_cyt (micromolar)');
    LEGEND_ALGEBRAIC(:,10) = strpad('J_hyd in component J_hyd (flux)');
    LEGEND_ALGEBRAIC(:,2) = strpad('J_CKMM in component J_CKMM (flux)');
    LEGEND_ALGEBRAIC(:,13) = strpad('J_diff_ATP in component J_diff_ATP (flux)');
    LEGEND_CONSTANTS(:,1) = strpad('V_cyt in component fractional_volumes (dimensionless)');
    LEGEND_STATES(:,2) = strpad('ADP_cyt in component ADP_cyt (micromolar)');
    LEGEND_ALGEBRAIC(:,14) = strpad('J_diff_ADP in component J_diff_ADP (flux)');
    LEGEND_STATES(:,3) = strpad('PCr_cyt in component PCr_cyt (micromolar)');
    LEGEND_ALGEBRAIC(:,6) = strpad('J_diff_PCr in component J_diff_PCr (flux)');
    LEGEND_STATES(:,4) = strpad('Cr_cyt in component Cr_cyt (micromolar)');
    LEGEND_ALGEBRAIC(:,7) = strpad('J_diff_Cr in component J_diff_Cr (flux)');
    LEGEND_STATES(:,5) = strpad('Pi_cyt in component Pi_cyt (micromolar)');
    LEGEND_ALGEBRAIC(:,15) = strpad('J_diff_Pi in component J_diff_Pi (flux)');
    LEGEND_STATES(:,6) = strpad('ATP_ims in component ATP_ims (micromolar)');
    LEGEND_ALGEBRAIC(:,4) = strpad('J_CKMi in component J_CKMi (flux)');
    LEGEND_ALGEBRAIC(:,12) = strpad('J_syn in component J_syn (flux)');
    LEGEND_CONSTANTS(:,2) = strpad('V_ims in component fractional_volumes (dimensionless)');
    LEGEND_STATES(:,7) = strpad('ADP_ims in component ADP_ims (micromolar)');
    LEGEND_STATES(:,8) = strpad('PCr_ims in component PCr_ims (micromolar)');
    LEGEND_STATES(:,9) = strpad('Cr_ims in component Cr_ims (micromolar)');
    LEGEND_STATES(:,10) = strpad('Pi_ims in component Pi_ims (micromolar)');
    LEGEND_ALGEBRAIC(:,1) = strpad('Den_MMCK in component J_CKMM (dimensionless)');
    LEGEND_CONSTANTS(:,3) = strpad('Kia in component J_CKMM (micromolar)');
    LEGEND_CONSTANTS(:,4) = strpad('Kb in component J_CKMM (micromolar)');
    LEGEND_CONSTANTS(:,5) = strpad('Kib in component J_CKMM (micromolar)');
    LEGEND_CONSTANTS(:,32) = strpad('KIb in component J_CKMM (micromolar)');
    LEGEND_CONSTANTS(:,33) = strpad('Kc in component J_CKMM (micromolar)');
    LEGEND_CONSTANTS(:,6) = strpad('Kic in component J_CKMM (micromolar)');
    LEGEND_CONSTANTS(:,7) = strpad('Kd in component J_CKMM (micromolar)');
    LEGEND_CONSTANTS(:,8) = strpad('Kid in component J_CKMM (micromolar)');
    LEGEND_CONSTANTS(:,9) = strpad('Vmax_MM_f in component J_CKMM (flux)');
    LEGEND_CONSTANTS(:,10) = strpad('Vmax_MM_b in component J_CKMM (flux)');
    LEGEND_ALGEBRAIC(:,3) = strpad('Den_MiCK in component J_CKMi (dimensionless)');
    LEGEND_CONSTANTS(:,11) = strpad('Kia in component J_CKMi (micromolar)');
    LEGEND_CONSTANTS(:,12) = strpad('Kb in component J_CKMi (micromolar)');
    LEGEND_CONSTANTS(:,13) = strpad('Kib in component J_CKMi (micromolar)');
    LEGEND_CONSTANTS(:,34) = strpad('KIb in component J_CKMi (micromolar)');
    LEGEND_CONSTANTS(:,35) = strpad('Kc in component J_CKMi (micromolar)');
    LEGEND_CONSTANTS(:,14) = strpad('Kic in component J_CKMi (micromolar)');
    LEGEND_CONSTANTS(:,15) = strpad('Kd in component J_CKMi (micromolar)');
    LEGEND_CONSTANTS(:,16) = strpad('Kid in component J_CKMi (micromolar)');
    LEGEND_CONSTANTS(:,17) = strpad('Vmax_Mi_f in component J_CKMi (flux)');
    LEGEND_CONSTANTS(:,18) = strpad('Vmax_Mi_b in component J_CKMi (flux)');
    LEGEND_ALGEBRAIC(:,9) = strpad('H_ATPmax in component J_hyd (flux)');
    LEGEND_CONSTANTS(:,19) = strpad('J_hyd_basis_1 in component J_hyd (flux)');
    LEGEND_CONSTANTS(:,20) = strpad('J_hyd_basis_2 in component J_hyd (flux)');
    LEGEND_CONSTANTS(:,21) = strpad('freq_1 in component J_hyd (dimensionless)');
    LEGEND_CONSTANTS(:,22) = strpad('freq_2 in component J_hyd (dimensionless)');
    LEGEND_CONSTANTS(:,36) = strpad('t_cycle_1 in component J_hyd (second)');
    LEGEND_CONSTANTS(:,37) = strpad('t_cycle_2 in component J_hyd (second)');
    LEGEND_ALGEBRAIC(:,8) = strpad('t_cycle in component J_hyd (second)');
    LEGEND_CONSTANTS(:,23) = strpad('nb_of_cycles_1 in component J_hyd (dimensionless)');
    LEGEND_CONSTANTS(:,38) = strpad('duration_1 in component J_hyd (second)');
    LEGEND_ALGEBRAIC(:,5) = strpad('ltime in component J_hyd (second)');
    LEGEND_ALGEBRAIC(:,11) = strpad('Den_syn in component J_syn (dimensionless)');
    LEGEND_CONSTANTS(:,24) = strpad('KPi in component J_syn (micromolar)');
    LEGEND_CONSTANTS(:,25) = strpad('KADP in component J_syn (micromolar)');
    LEGEND_CONSTANTS(:,26) = strpad('V_max_syn in component J_syn (flux)');
    LEGEND_CONSTANTS(:,27) = strpad('PS_tot_ATP in component J_diff_ATP (first_order_rate_constant)');
    LEGEND_CONSTANTS(:,28) = strpad('PS_tot_ADP in component J_diff_ADP (first_order_rate_constant)');
    LEGEND_CONSTANTS(:,29) = strpad('PS_tot_PCr in component J_diff_PCr (first_order_rate_constant)');
    LEGEND_CONSTANTS(:,30) = strpad('PS_tot_Cr in component J_diff_Cr (first_order_rate_constant)');
    LEGEND_CONSTANTS(:,31) = strpad('PS_tot_Pi in component J_diff_Pi (first_order_rate_constant)');
    LEGEND_RATES(:,1) = strpad('d/dt ATP_cyt in component ATP_cyt (micromolar)');
    LEGEND_RATES(:,2) = strpad('d/dt ADP_cyt in component ADP_cyt (micromolar)');
    LEGEND_RATES(:,3) = strpad('d/dt PCr_cyt in component PCr_cyt (micromolar)');
    LEGEND_RATES(:,4) = strpad('d/dt Cr_cyt in component Cr_cyt (micromolar)');
    LEGEND_RATES(:,5) = strpad('d/dt Pi_cyt in component Pi_cyt (micromolar)');
    LEGEND_RATES(:,6) = strpad('d/dt ATP_ims in component ATP_ims (micromolar)');
    LEGEND_RATES(:,7) = strpad('d/dt ADP_ims in component ADP_ims (micromolar)');
    LEGEND_RATES(:,8) = strpad('d/dt PCr_ims in component PCr_ims (micromolar)');
    LEGEND_RATES(:,9) = strpad('d/dt Cr_ims in component Cr_ims (micromolar)');
    LEGEND_RATES(:,10) = strpad('d/dt Pi_ims in component Pi_ims (micromolar)');
    LEGEND_STATES  = LEGEND_STATES';
    LEGEND_ALGEBRAIC = LEGEND_ALGEBRAIC';
    LEGEND_RATES = LEGEND_RATES';
    LEGEND_CONSTANTS = LEGEND_CONSTANTS';
end

function [STATES, CONSTANTS] = initConsts()
    VOI = 0; CONSTANTS = []; STATES = []; ALGEBRAIC = [];
    STATES(:,1) = 5912.77;
    CONSTANTS(:,1) = 0.75;
    STATES(:,2) = 64;
    STATES(:,3) = 5000;
    STATES(:,4) = 10500;
    STATES(:,5) = 913;
    STATES(:,6) = 5912.77;
    CONSTANTS(:,2) = 0.0625;
    STATES(:,7) = 39;
    STATES(:,8) = 5000;
    STATES(:,9) = 10500;
    STATES(:,10) = 910;
    CONSTANTS(:,3) = 9.0E2;
    CONSTANTS(:,4) = 1.55E4;
    CONSTANTS(:,5) = 3.49E4;
    CONSTANTS(:,6) = 2.224E2;
    CONSTANTS(:,7) = 1.67E3;
    CONSTANTS(:,8) = 4.73E3;
    CONSTANTS(:,9) = 1.144E4;
    CONSTANTS(:,10) = 4.804E4;
    CONSTANTS(:,11) = 7.5E2;
    CONSTANTS(:,12) = 5.2E3;
    CONSTANTS(:,13) = 2.88E4;
    CONSTANTS(:,14) = 2.048E2;
    CONSTANTS(:,15) = 5.0E2;
    CONSTANTS(:,16) = 1.6E3;
    CONSTANTS(:,17) = 8.82E2;
    CONSTANTS(:,18) = 3.704E3;
    CONSTANTS(:,19) = 4.865e2;
    CONSTANTS(:,20) = 6.276e2;
    CONSTANTS(:,21) = 135;
    CONSTANTS(:,22) = 220;
    CONSTANTS(:,23) = 5;
    CONSTANTS(:,24) = 8E2;
    CONSTANTS(:,25) = 25;
    CONSTANTS(:,26) = 1.504E4;
    CONSTANTS(:,27) = 13.3;
    CONSTANTS(:,28) = 13.3;
    CONSTANTS(:,29) = 155.0;
    CONSTANTS(:,30) = 155.0;
    CONSTANTS(:,31) = 194.0;
    CONSTANTS(:,32) = CONSTANTS(:,5);
    CONSTANTS(:,33) = ( CONSTANTS(:,6).*CONSTANTS(:,7))./CONSTANTS(:,8);
    CONSTANTS(:,34) = CONSTANTS(:,13);
    CONSTANTS(:,35) = ( CONSTANTS(:,14).*CONSTANTS(:,15))./CONSTANTS(:,16);
    CONSTANTS(:,36) = 60.0000./CONSTANTS(:,21);
    CONSTANTS(:,37) = 60.0000./CONSTANTS(:,22);
    CONSTANTS(:,38) =  CONSTANTS(:,23).*CONSTANTS(:,36);
    if (isempty(STATES)), warning('Initial values for states not set');, end
end

function [RATES, ALGEBRAIC] = computeRates(VOI, STATES, CONSTANTS)
    global algebraicVariableCount;
    statesSize = size(STATES);
    statesColumnCount = statesSize(2);
    if ( statesColumnCount == 1)
        STATES = STATES';
        ALGEBRAIC = zeros(1, algebraicVariableCount);
        utilOnes = 1;
    else
        statesRowCount = statesSize(1);
        ALGEBRAIC = zeros(statesRowCount, algebraicVariableCount);
        RATES = zeros(statesRowCount, statesColumnCount);
        utilOnes = ones(statesRowCount, 1);
    end
    ALGEBRAIC(:,1) = 1.00000+STATES(:,4)./CONSTANTS(:,5)+STATES(:,3)./CONSTANTS(:,8)+ STATES(:,1).*(1.00000./CONSTANTS(:,3)+STATES(:,4)./( CONSTANTS(:,3).*CONSTANTS(:,4)))+ STATES(:,2).*(1.00000./CONSTANTS(:,6)+STATES(:,3)./( CONSTANTS(:,8).*CONSTANTS(:,33))+STATES(:,4)./( CONSTANTS(:,6).*CONSTANTS(:,32)));
    ALGEBRAIC(:,2) = ( CONSTANTS(:,9).*(( STATES(:,1).*STATES(:,4))./( CONSTANTS(:,3).*CONSTANTS(:,4))) -  CONSTANTS(:,10).*(( STATES(:,2).*STATES(:,3))./( CONSTANTS(:,6).*CONSTANTS(:,7))))./ALGEBRAIC(:,1);
    ALGEBRAIC(:,6) =  CONSTANTS(:,29).*(STATES(:,8) - STATES(:,3));
    RATES(:,3) = (ALGEBRAIC(:,6)+ALGEBRAIC(:,2))./CONSTANTS(:,1);
    ALGEBRAIC(:,7) =  CONSTANTS(:,30).*(STATES(:,9) - STATES(:,4));
    RATES(:,4) = (ALGEBRAIC(:,7) - ALGEBRAIC(:,2))./CONSTANTS(:,1);
    ALGEBRAIC(:,3) = 1.00000+STATES(:,9)./CONSTANTS(:,13)+STATES(:,8)./CONSTANTS(:,16)+ STATES(:,6).*(1.00000./CONSTANTS(:,11)+STATES(:,9)./( CONSTANTS(:,11).*CONSTANTS(:,12)))+ STATES(:,7).*(1.00000./CONSTANTS(:,14)+STATES(:,8)./( CONSTANTS(:,16).*CONSTANTS(:,35))+STATES(:,9)./( CONSTANTS(:,14).*CONSTANTS(:,34)));
    ALGEBRAIC(:,4) = ( CONSTANTS(:,17).*(( STATES(:,6).*STATES(:,9))./( CONSTANTS(:,11).*CONSTANTS(:,12))) -  CONSTANTS(:,18).*(( STATES(:,7).*STATES(:,8))./( CONSTANTS(:,14).*CONSTANTS(:,15))))./ALGEBRAIC(:,3);
    RATES(:,8) = (ALGEBRAIC(:,4) - ALGEBRAIC(:,6))./CONSTANTS(:,2);
    RATES(:,9) =  - (ALGEBRAIC(:,4)+ALGEBRAIC(:,7))./CONSTANTS(:,2);
    ALGEBRAIC(:,9) = piecewise({VOI<=CONSTANTS(:,38),  6.00000.*CONSTANTS(:,19) },  6.00000.*CONSTANTS(:,20));
    ALGEBRAIC(:,8) = piecewise({VOI<=CONSTANTS(:,38), CONSTANTS(:,36) }, CONSTANTS(:,37));
    ALGEBRAIC(:,5) = piecewise({VOI<=CONSTANTS(:,38), VOI -  CONSTANTS(:,36).*floor(VOI./CONSTANTS(:,36)) }, (VOI - CONSTANTS(:,38)) -  CONSTANTS(:,37).*floor((VOI - CONSTANTS(:,38))./CONSTANTS(:,37)));
    ALGEBRAIC(:,10) = piecewise({ALGEBRAIC(:,5)>=0.00000&ALGEBRAIC(:,5)< (1.00000./6.00000).*ALGEBRAIC(:,8),  (( ALGEBRAIC(:,9).*ALGEBRAIC(:,5))./ALGEBRAIC(:,8)).*6.00000 , ALGEBRAIC(:,5)>= (1.00000./6.00000).*ALGEBRAIC(:,8)&ALGEBRAIC(:,5)< (1.00000./3.00000).*ALGEBRAIC(:,8),  ALGEBRAIC(:,9).*(1.00000 -  6.00000.*(ALGEBRAIC(:,5)./ALGEBRAIC(:,8) - 1.00000./6.00000)) , ALGEBRAIC(:,5)>= (1.00000./3.00000).*ALGEBRAIC(:,8)&ALGEBRAIC(:,5)<ALGEBRAIC(:,8), 0.00000 }, NaN);
    ALGEBRAIC(:,13) =  CONSTANTS(:,27).*(STATES(:,6) - STATES(:,1));
    RATES(:,1) = (ALGEBRAIC(:,13) - (ALGEBRAIC(:,10)+ALGEBRAIC(:,2)))./CONSTANTS(:,1);
    ALGEBRAIC(:,14) =  CONSTANTS(:,28).*(STATES(:,7) - STATES(:,2));
    RATES(:,2) = (ALGEBRAIC(:,14)+ALGEBRAIC(:,10)+ALGEBRAIC(:,2))./CONSTANTS(:,1);
    ALGEBRAIC(:,15) =  CONSTANTS(:,31).*(STATES(:,10) - STATES(:,5));
    RATES(:,5) = (ALGEBRAIC(:,15)+ALGEBRAIC(:,10))./CONSTANTS(:,1);
    ALGEBRAIC(:,11) = 1.00000+STATES(:,7)./CONSTANTS(:,25)+STATES(:,10)./CONSTANTS(:,24)+( STATES(:,7).*STATES(:,10))./( CONSTANTS(:,25).*CONSTANTS(:,24));
    ALGEBRAIC(:,12) =  CONSTANTS(:,26).*(( STATES(:,7).*STATES(:,10))./( CONSTANTS(:,24).*CONSTANTS(:,25).*ALGEBRAIC(:,11)));
    RATES(:,6) = (ALGEBRAIC(:,12) - (ALGEBRAIC(:,13)+ALGEBRAIC(:,4)))./CONSTANTS(:,2);
    RATES(:,7) = (ALGEBRAIC(:,4) - (ALGEBRAIC(:,12)+ALGEBRAIC(:,14)))./CONSTANTS(:,2);
    RATES(:,10) =  - (ALGEBRAIC(:,12)+ALGEBRAIC(:,15))./CONSTANTS(:,2);
   RATES = RATES';
end

% Calculate algebraic variables
function ALGEBRAIC = computeAlgebraic(ALGEBRAIC, CONSTANTS, STATES, VOI)
    statesSize = size(STATES);
    statesColumnCount = statesSize(2);
    if ( statesColumnCount == 1)
        STATES = STATES';
        utilOnes = 1;
    else
        statesRowCount = statesSize(1);
        utilOnes = ones(statesRowCount, 1);
    end
    ALGEBRAIC(:,1) = 1.00000+STATES(:,4)./CONSTANTS(:,5)+STATES(:,3)./CONSTANTS(:,8)+ STATES(:,1).*(1.00000./CONSTANTS(:,3)+STATES(:,4)./( CONSTANTS(:,3).*CONSTANTS(:,4)))+ STATES(:,2).*(1.00000./CONSTANTS(:,6)+STATES(:,3)./( CONSTANTS(:,8).*CONSTANTS(:,33))+STATES(:,4)./( CONSTANTS(:,6).*CONSTANTS(:,32)));
    ALGEBRAIC(:,2) = ( CONSTANTS(:,9).*(( STATES(:,1).*STATES(:,4))./( CONSTANTS(:,3).*CONSTANTS(:,4))) -  CONSTANTS(:,10).*(( STATES(:,2).*STATES(:,3))./( CONSTANTS(:,6).*CONSTANTS(:,7))))./ALGEBRAIC(:,1);
    ALGEBRAIC(:,6) =  CONSTANTS(:,29).*(STATES(:,8) - STATES(:,3));
    ALGEBRAIC(:,7) =  CONSTANTS(:,30).*(STATES(:,9) - STATES(:,4));
    ALGEBRAIC(:,3) = 1.00000+STATES(:,9)./CONSTANTS(:,13)+STATES(:,8)./CONSTANTS(:,16)+ STATES(:,6).*(1.00000./CONSTANTS(:,11)+STATES(:,9)./( CONSTANTS(:,11).*CONSTANTS(:,12)))+ STATES(:,7).*(1.00000./CONSTANTS(:,14)+STATES(:,8)./( CONSTANTS(:,16).*CONSTANTS(:,35))+STATES(:,9)./( CONSTANTS(:,14).*CONSTANTS(:,34)));
    ALGEBRAIC(:,4) = ( CONSTANTS(:,17).*(( STATES(:,6).*STATES(:,9))./( CONSTANTS(:,11).*CONSTANTS(:,12))) -  CONSTANTS(:,18).*(( STATES(:,7).*STATES(:,8))./( CONSTANTS(:,14).*CONSTANTS(:,15))))./ALGEBRAIC(:,3);
    ALGEBRAIC(:,9) = piecewise({VOI<=CONSTANTS(:,38),  6.00000.*CONSTANTS(:,19) },  6.00000.*CONSTANTS(:,20));
    ALGEBRAIC(:,8) = piecewise({VOI<=CONSTANTS(:,38), CONSTANTS(:,36) }, CONSTANTS(:,37));
    ALGEBRAIC(:,5) = piecewise({VOI<=CONSTANTS(:,38), VOI -  CONSTANTS(:,36).*floor(VOI./CONSTANTS(:,36)) }, (VOI - CONSTANTS(:,38)) -  CONSTANTS(:,37).*floor((VOI - CONSTANTS(:,38))./CONSTANTS(:,37)));
    ALGEBRAIC(:,10) = piecewise({ALGEBRAIC(:,5)>=0.00000&ALGEBRAIC(:,5)< (1.00000./6.00000).*ALGEBRAIC(:,8),  (( ALGEBRAIC(:,9).*ALGEBRAIC(:,5))./ALGEBRAIC(:,8)).*6.00000 , ALGEBRAIC(:,5)>= (1.00000./6.00000).*ALGEBRAIC(:,8)&ALGEBRAIC(:,5)< (1.00000./3.00000).*ALGEBRAIC(:,8),  ALGEBRAIC(:,9).*(1.00000 -  6.00000.*(ALGEBRAIC(:,5)./ALGEBRAIC(:,8) - 1.00000./6.00000)) , ALGEBRAIC(:,5)>= (1.00000./3.00000).*ALGEBRAIC(:,8)&ALGEBRAIC(:,5)<ALGEBRAIC(:,8), 0.00000 }, NaN);
    ALGEBRAIC(:,13) =  CONSTANTS(:,27).*(STATES(:,6) - STATES(:,1));
    ALGEBRAIC(:,14) =  CONSTANTS(:,28).*(STATES(:,7) - STATES(:,2));
    ALGEBRAIC(:,15) =  CONSTANTS(:,31).*(STATES(:,10) - STATES(:,5));
    ALGEBRAIC(:,11) = 1.00000+STATES(:,7)./CONSTANTS(:,25)+STATES(:,10)./CONSTANTS(:,24)+( STATES(:,7).*STATES(:,10))./( CONSTANTS(:,25).*CONSTANTS(:,24));
    ALGEBRAIC(:,12) =  CONSTANTS(:,26).*(( STATES(:,7).*STATES(:,10))./( CONSTANTS(:,24).*CONSTANTS(:,25).*ALGEBRAIC(:,11)));
end

% Compute result of a piecewise function
function x = piecewise(cases, default)
    set = [0];
    for i = 1:2:length(cases)
        if (length(cases{i+1}) == 1)
            x(cases{i} & ~set,:) = cases{i+1};
        else
            x(cases{i} & ~set,:) = cases{i+1}(cases{i} & ~set);
        end
        set = set | cases{i};
        if(set), break, end
    end
    if (length(default) == 1)
        x(~set,:) = default;
    else
        x(~set,:) = default(~set);
    end
end

% Pad out or shorten strings to a set length
function strout = strpad(strin)
    req_length = 160;
    insize = size(strin,2);
    if insize > req_length
        strout = strin(1:req_length);
    else
        strout = [strin, blanks(req_length - insize)];
    end
end