// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) ???? - INRIA - Scilab
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution.  The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt

function a=%b_sum(varargin)
    a = varargin(1)
    dims = size(a);

    nargs = size(varargin);
    select nargs
    case 1
        d = "*";
        typ = "double";
    case 2
        if or(varargin(2) == ["native", "double"]) then
            d = "*";
            typ = varargin(2);
        else
            d = varargin(2);
            typ = "double";
        end
    case 3
        d = varargin(2);
        typ = varargin(3);
    else
        error(msprintf(_("%s: Wrong number of input argument(s): %d to %d expected.\n"),"sum", 1, 3));
    end

    // Check second argument : d
    select type(d)
    case 1
        if size(d,'*') <> 1 then
            error(msprintf(_("%s: Wrong size for input argument #%d: A scalar expected.\n"),"sum", 2))
        end
        if int(d) <> d | d < 0 then
            error(msprintf(_("%s: Wrong value for input argument #%d: Integer >= %d expected.\n"),"sum", 2, 1))
        end
    case 10 
        if size(d,'*') <> 1 then
            error(msprintf(_("%s: Wrong size for input argument #%d: A string expected.\n"),"sum",2))
        end
        if and(d<>["r","c","*","m"]) then
            error(msprintf(_("%s: Wrong value for input argument #%d: Must be in the set {%s}.\n"),..
            "sum",2,"""*"",""r"",""c"",""m"""))
        end
    else
        error(msprintf(_("%s: Wrong type for input argument #%d: A string or scalar expected.\n"),"sum",2))
    end

    // Check third argument
    if type(typ)<>10 then
        error(msprintf(_("%s: Wrong type for input argument #%d: A string expected.\n"),"sum",3))
    end

    if size(typ,"*")<>1 then
        error(msprintf(_("%s: Wrong size for input argument #%d: A string expected.\n"),"sum",3))
    end

    if and(typ <> ["native" "double"]) then
        error(msprintf(_("%s: Wrong value for input argument #%d: ""%s"" or ""%s"" expected.\n"),"sum", 3, "native", "double"));
    end

    if typ == "native" then
        if d <> "*" & type(d) == 10 then
            pos = [1,2,find(dims>1,1)];
            d=pos(find(d==["r","c","m"]))
        end
        // Case "m"
        if type(d) == 1 & d > 2 then
            a = a;
        else
            a = or(a, d)
        end
    else
        a = sum(double(a), d)
    end
    
//    if varargin($)=="native" then
//        if size(varargin)==3 & type(varargin(2))==1 & varargin(2)>2 then
//            r=varargin(1)
//        else
//            // call sum(a, d) with d = "native"
//            // or call(a, d, typ) with typ = "native"
//            if size(varargin) == 3 then
//                d = varargin(2);
//                // d must be a string or scalar -> check type
//                if and(type(d)<> [1, 10]) then
//                    error(msprintf(_("%s: Wrong type for input argument #%d: A string or scalar expected.\n"),"sum",2))
//                end
//
//                if size(d,"*")<>1 then
//                    if type(d)==10 then
//                        error(msprintf(_("%s: Wrong size for input argument #%d: A string expected.\n"),"sum",2))
//                    else
//                        error(msprintf(_("%s: Wrong size for input argument #%d: A scalar expected.\n"),"sum",2))
//                    end
//                end
//
//                // If d is a string, d = "m", "c", "r" or "*"
//                // Else d is an integer > 0
//                if type(d)==10 then
//                    d=find(d==["m","*","r","c"])
//                    if d==[] then
//                        error(msprintf(_("%s: Wrong value for input argument #%d: Must be in the set {%s}.\n"),..
//                        "sum",2,"""*"",""r"",""c"",""m"",1:"+string(ndims(varargin(1)))))
//                    end
//                    d=d-2
//                else
//                    if d<0 then
//                        error(msprintf(_("%s: Wrong value for input argument #%d: Must be in the set {%s}.\n"),..
//                        "cumprod",2,"""*"",""r"",""c"",""m"",1:"+string(ndims(varargin(1)))))
//                    end
//                end
//
//                dims=size(varargin(1));
//
//                if d==-1 then //'m'
//                    d=find(dims>1,1)
//                    if d==[] then d=0,end
//                end
//                
//                // If d = 0, error in or function
//                if d == 0 then
//                    d = "*"
//                end
//                
//                varargin(2) = d;
//            end
//            r=or(varargin(1:$-1))
//        end
//    else
//        // converts boolean to double
//        varargin(1)=bool2s(varargin(1))
//
//        // call sum(a, d, typ)
//        if argn(2) == 3 then
//            // d must be a string or a scalar -> check type and size
//            d = varargin(2);
//            if and(type(d)<> [1, 10]) then
//                error(msprintf(_("%s: Wrong type for input argument #%d: A string or scalar expected.\n"),"sum",2))
//            end
//
//            if size(d,"*")<>1 then
//                if type(d)==10 then
//                    error(msprintf(_("%s: Wrong size for input argument #%d: A string expected.\n"),"sum",2))
//                else
//                    error(msprintf(_("%s: Wrong size for input argument #%d: A scalar expected.\n"),"sum",2))
//                end
//            end
//
//            // If d is a string, d = "m", "*", "r", "c"
//            // Else  d is an integer > 0
//            if type(d)==10 then
//                if and(d <> ["m","*","r","c"]) then
//                    error(msprintf(_("%s: Wrong value for input argument #%d: Must be in the set {%s}.\n"),..
//                    "sum",2,"""*"",""r"",""c"",""m"",1:"+string(ndims(varargin(1)))))
//                end
//            else
//                if d < 0 then
//                    error(msprintf(_("%s: Wrong value for input argument #%d: Must be in the set {%s}.\n"),..
//                    "sum",2,"""*"",""r"",""c"",""m"",1:"+string(ndims(varargin(1)))))
//                end
//            end
//
//            // typ must be a string and typ="double"
//            typ = varargin($)
//            if type(typ)<>10 then
//                error(msprintf(_("%s: Wrong type for input argument #%d: A string expected.\n"),"sum",3))
//            end
//
//            if size(typ,"*")<>1 then
//                error(msprintf(_("%s: Wrong size for input argument #%d: A string expected.\n"),"sum",3))
//            end
//
//            if typ <> "double" then
//                error(msprintf(_("%s: Wrong value for input argument #%d: ""%s"" or ""%s"" expected.\n"),"sum", 3, "native", "double"));
//            end
//            varargin($) = null()
//        end
//        r = sum(varargin(:))
//    end
endfunction