//private void subtract(object sender, EventArgs e)
//{
// MessageBox.Show("Não implementado");
//}
private void subtract(object sender, EventArgs e)
{
IEEE754 patternIEEE = new IEEE754();
double v1 = !string.IsNullOrEmpty(valueOne.Text) ? double.Parse(valueOne.Text.Replace(".", ",")) : 0d;
double v2 = !string.IsNullOrEmpty(valueTwo.Text) ? double.Parse(valueTwo.Text.Replace(".", ",")) : 0d;
string nBin1 = patternIEEE.FloatToBinary(float.Parse(valueOne.Text)).Replace(" ", "");
string nBin2 = patternIEEE.FloatToBinary(float.Parse(valueTwo.Text)).Replace(" ", "");
string mantissaBit1 = "", mantissaBit2 = "";
Ula24Bits ula24Bits;
if (v1 < 0)
{
nBin1 = nBin1[0] + nBin1.Substring(1, 8) + nBin1.Substring(9, 23).Replace('0', 'x');
nBin1 = nBin1[0] + nBin1.Substring(1, 8) + nBin1.Substring(9, 23).Replace('1', '0');
nBin1 = nBin1[0] + nBin1.Substring(1, 8) + nBin1.Substring(9, 23).Replace('x', '1');
ula24Bits = new Ula24Bits(arrayParse(nBin1.Substring(9, 23), 24), arrayParse("1".PadLeft(24, '0'), 24), 3, 0);
mantissaBit1 = string.Join(string.Empty, ula24Bits.getSaidas());
mantissaBit1 = nBin1[0] + nBin1.Substring(1, 8) + mantissaBit1.Substring(0, 23);
}
nBin2 = nBin2[0] + nBin2.Substring(1, 8) + nBin2.Substring(9, 23).Replace('0', 'x');
nBin2 = nBin2[0] + nBin2.Substring(1, 8) + nBin2.Substring(9, 23).Replace('1', '0');
nBin2 = nBin2[0] + nBin2.Substring(1, 8) + nBin2.Substring(9, 23).Replace('x', '1');
ula24Bits = new Ula24Bits(arrayParse(nBin2.Substring(9, 23), 24), arrayParse("1".PadLeft(24, '0'), 24), 3, 0);
mantissaBit2 = string.Join(string.Empty, ula24Bits.getSaidas());
mantissaBit2 = nBin2[0] + nBin2.Substring(1, 8) + mantissaBit2.Substring(0, 23);
if (mantissaBit1 == "")
{
mantissaBit1 = nBin1;
}
string result = this.operation(mantissaBit1, mantissaBit2);
this.setResultFields(result);
}
private string operation(string nBin1, string nBin2)
{
int signal1 = int.Parse(nBin1[0].ToString());
int signal2 = int.Parse(nBin2[0].ToString());
double v1 = !string.IsNullOrEmpty(valueOne.Text) ? double.Parse(valueOne.Text.Replace(".", ",")) : 0d;
double v2 = !string.IsNullOrEmpty(valueTwo.Text) ? double.Parse(valueTwo.Text.Replace(".", ",")) : 0d;
string signalBitBin1 = nBin1.Substring(0, 1);
string exponentBin1 = nBin1.Substring(1, 8);
int expoBin1 = Convert.ToInt32(exponentBin1, 2);
int lengthBin1 = expoBin1 - 127;
string fractionBin1 = "1" + nBin1.Substring(9, 23);
string signalBitBin2 = nBin2.Substring(0, 1);
string exponentBin2 = nBin2.Substring(1, 8);
int expoBin2 = Convert.ToInt32(exponentBin2, 2);
int lengthBin2 = expoBin2 - 127;
string fractionBin2 = "1" + nBin2.Substring(9, 23);
this.currentExpo = exponentBin1;
if (v1 != 0 && v2 == 0)
{
return(string.Join(string.Empty, new Ula(signal1, signal2, 3, 0).getSaidaUla()) + exponentBin1 + nBin1.Substring(9, 23));
}
else if (v2 != 0 && v1 == 0)
{
return(string.Join(string.Empty, new Ula(signal1, signal2, 3, 0).getSaidaUla()) + exponentBin2 + nBin2.Substring(9, 23));
}
else if (lengthBin1 > lengthBin2)
{
int diff = lengthBin1 - lengthBin2;
int[] result = new Ula8Bits(arrayParse(exponentBin1, 8), arrayParse(diff.ToString("2"), 8), 3, 0).getSaidas();
this.currentExpo = string.Join(string.Empty, result);
string zeros = "".PadLeft(diff, '0');
fractionBin2 = zeros + fractionBin2.Substring(0, (24 - zeros.Length));
}
else if (lengthBin1 < lengthBin2)
{
int diff = lengthBin2 - lengthBin1;
int[] result = new Ula8Bits(arrayParse(exponentBin2, 8), arrayParse(diff.ToString("2"), 8), 3, 0).getSaidas();
this.currentExpo = string.Join(string.Empty, result);
string zeros = "".PadLeft(diff, '0');
fractionBin1 = zeros + fractionBin1.Substring(0, (24 - zeros.Length));
}
Ula24Bits ula24Bits = new Ula24Bits(arrayParse(fractionBin1, 24), arrayParse(fractionBin2, 24), 3, 0);
string mantissa = string.Join(string.Empty, ula24Bits.getSaidas());
if (ula24Bits.getCarryOut() == 1)
{
int[] bitToNormalize = new int[8] {
0, 0, 0, 0, 0, 0, 0, 1
};
int[] finalResult = new Ula8Bits(arrayParse(this.currentExpo, 8), bitToNormalize, 3, 0).getSaidas();
this.currentExpo = string.Join(string.Empty, finalResult);
mantissa = mantissa.Substring(0, 23);
}
else
{
mantissa = mantissa.Substring(1, 23);
}
return(string.Join(string.Empty, new Ula(signal1, signal2, 3, 0).getSaidaUla()) + this.currentExpo + mantissa.Substring(0, 23));
}