SceneJS_math_subScalarMat4 = function(s, m, dest) {
    if (!dest) {
        dest = m;
    }

    dest[0] = s - m[0];
    dest[1] = s - m[1];
    dest[2] = s - m[2];
    dest[3] = s - m[3];
    dest[4] = s - m[4];
    dest[5] = s - m[5];
    dest[6] = s - m[6];
    dest[7] = s - m[7];
    dest[8] = s - m[8];
    dest[9] = s - m[9];
    dest[10] = s - m[10];
    dest[11] = s - m[11];
    dest[12] = s - m[12];
    dest[13] = s - m[13];
    dest[14] = s - m[14];
    dest[15] = s - m[15];

    return dest;
}
@param s scalar
@param m mat4
@param dest mat4 - optional destination
@return {mat4} dest if specified, m otherwise
@private