private void fpToDec() {
if (calculator.getDisplayText().length() == 0) return;
try {
Integer displayNumber = Integer.valueOf(calculator.getDisplayText(), 16);
Double converted = Utils.fpToDec(displayNumber);
if ((displayNumber > 944.44444) || (displayNumber < -944.44444)) {
throw (new IllegalArgumentException());
}
calculator.setDisplayText(converted.toString());
} catch (NumberFormatException e) {
calculator.setDisplayText("Formato de numero invalido");
calculator.setErrorMode();
} catch (IllegalArgumentException e) {
calculator.setDisplayText("Numero fuera de rango");
calculator.setErrorMode();
}
}
// Sirve para numeros entre -127 y 128
private void hexToDec() {
if (calculator.getDisplayText().length() == 0) return;
try {
Long aux = Long.valueOf(calculator.getDisplayText(), 16);
aux = (aux > 127) ? (long) (aux - 256) : aux;
if ((aux > 127) || (aux < -128)) {
throw (new IllegalArgumentException());
}
calculator.setDisplayText(aux.toString());
} catch (NumberFormatException e) {
calculator.setDisplayText("Formato de numero invalido");
calculator.setErrorMode();
} catch (IllegalArgumentException e) {
calculator.setDisplayText("Numero fuera de rango");
calculator.setErrorMode();
}
}
private void decToFp() {
if (calculator.getDisplayText().length() == 0) return;
String result = "";
try {
Double displayNumber = Double.parseDouble(calculator.getDisplayText());
if ((displayNumber > 944.44444) || (displayNumber < -944.44444)) {
throw (new IllegalArgumentException());
}
result = Utils.hexString(Utils.decToFp(displayNumber));
} catch (NumberFormatException e) {
result = "Formato de numero inválido";
calculator.setErrorMode();
} catch (IllegalArgumentException Exception) {
result = "Número fuera de rango";
calculator.setErrorMode();
} catch (LostPrecisionException e) {
result = Utils.hexString(e.getNumber());
calculator.showPrecisionLostDialog();
} finally {
calculator.setDisplayText(result);
}
}
// Sirve para numeros entre -127 y 128
private void decToHex() {
if (calculator.getDisplayText().length() == 0) return;
try {
Long displayNumber = Long.parseLong(calculator.getDisplayText());
Long number;
number = Math.abs(displayNumber);
if ((displayNumber > 127) || (displayNumber < -128)) {
throw (new IllegalArgumentException());
}
if (displayNumber < 0) {
// Paso el numero a binario y completo con 0 hasta 8 bits
String binary = Long.toBinaryString(number);
while (binary.length() < 8) {
binary = '0' + binary;
}
// Invertir bits
char[] inverted = binary.toCharArray();
for (Integer i = 0; i < inverted.length; i++) {
if (inverted[i] == '0') inverted[i] = '1';
else inverted[i] = '0';
}
String invertedString = new String(inverted);
number = Long.parseLong(invertedString, 2) + 1;
}
calculator.setDisplayText(Long.toHexString(number));
} catch (NumberFormatException e) {
calculator.setDisplayText("Formato de numero invalido");
calculator.setErrorMode();
} catch (IllegalArgumentException Exception) {
calculator.setDisplayText("Numero fuera de rango");
calculator.setErrorMode();
}
}