static public StringVector4 Mult(StringMatrix l, StringVector4 r)
{
StringVector4 res = new StringVector4();
for (int i = 0; i < 4; i++)
{
int left = i * 4;
string equation = "";
for (int j = 0; j < 4; j++)
{
var a = l.Element[left + j];
var b = r.Element[i];
string m = Mult(a, b);
equation = equation.AppendPrePad(m, " + ");
}
equation = equation != "" ? equation : "0";
res.Element[i] = equation;
}
return(res);
}
static public StringMatrix Mult(StringMatrix l, StringMatrix r)
{
StringMatrix res = new StringMatrix();
for (int i = 0; i < 16; i++)
{
int left = (i / 4) * 4;
int right = i % 4;
string equation = "";
for (int j = 0; j < 4; j++)
{
var a = l.Element[left + j];
var b = r.Element[right + j * 4];
string m = Mult(a, b);
equation = equation.AppendPrePad(m, " + ");
}
equation = equation != "" ? equation : "0";
res.Element[i] = equation;
}
return(res);
}