/**
* rounds the element to the nearest element towards zero.
*
* @param operands[0] = value to round
* @return a matrix of the same size as the operands
*/
public OperandToken evaluate(Token[] operands) {
// exactly one operand
if (getNArgIn(operands) != 1) throwMathLibException("fix: number of arguments != 1");
// only works on numbers
if (!(operands[0] instanceof DoubleNumberToken))
throwMathLibException("fix: only works on numbers");
DoubleNumberToken matrix = ((DoubleNumberToken) operands[0]);
OperandToken temp = ((OperandToken) matrix.clone());
double[][] reValues = matrix.getValuesRe();
double[][] imValues = matrix.getValuesIm();
for (int y = 0; y < matrix.getSizeY(); y++) {
for (int x = 0; x < matrix.getSizeX(); x++) {
if (reValues[y][x] >= 0) {
// e.g. fix(3.2) => 3
reValues[y][x] = java.lang.Math.floor(reValues[y][x]);
} else {
// e.g. fix(-3.2) => -3
reValues[y][x] = java.lang.Math.ceil(reValues[y][x]);
}
if (imValues[y][x] >= 0) {
// e.g. fix(3.2i) => 3
imValues[y][x] = java.lang.Math.floor(imValues[y][x]);
} else {
// e.g. fix(-3.2i) => -3
imValues[y][x] = java.lang.Math.ceil(imValues[y][x]);
}
}
}
return new DoubleNumberToken(reValues, imValues);
}
public OperandToken evaluate(Token[] operands) {
// exactly one operand
if (getNArgIn(operands) != 1) throwMathLibException("fix: number of arguments != 1");
// only works on numbers
if (!(operands[0] instanceof DoubleNumberToken))
throwMathLibException("fix: only works on numbers");
Frame f = new Frame();
ModalDialog m =
new ModalDialog(f, "kk", "What do you want?", new String[] {"ok", "not ok", "maybe"});
// f.show();
m.show();
debugLine("questdlg: " + m.str);
DoubleNumberToken matrix = ((DoubleNumberToken) operands[0]);
OperandToken temp = ((OperandToken) matrix.clone());
double[][] reValues = matrix.getValuesRe();
double[][] imValues = matrix.getValuesIm();
for (int y = 0; y < matrix.getSizeY(); y++) {
for (int x = 0; x < matrix.getSizeX(); x++) {
if (reValues[y][x] >= 0) {
// e.g. fix(3.2) => 3
reValues[y][x] = java.lang.Math.floor(reValues[y][x]);
} else {
// e.g. fix(-3.2) => -3
reValues[y][x] = java.lang.Math.ceil(reValues[y][x]);
}
if (imValues[y][x] >= 0) {
// e.g. fix(3.2i) => 3
imValues[y][x] = java.lang.Math.floor(imValues[y][x]);
} else {
// e.g. fix(-3.2i) => -3
imValues[y][x] = java.lang.Math.ceil(imValues[y][x]);
}
}
}
return new DoubleNumberToken(reValues, imValues);
}
/**
* calculate the number of permutations
*
* @param operand[0] = the order of the equation
* @return the coefficients as a vector
*/
public OperandToken evaluate(Token[] operands) {
OperandToken result = new DoubleNumberToken(0);
if (operands.length >= 1 && operands[0] instanceof DoubleNumberToken) {
double val = ((DoubleNumberToken) operands[0]).getValueRe();
int order = (new Double(val)).intValue();
double[][] results = new double[1][order + 1];
DoubleNumberToken total = ((DoubleNumberToken) operands[0]);
for (int count = 0; count <= order; count++) {
// comb(x y) = y!/(x! * (y-x)!)
DoubleNumberToken objects = new DoubleNumberToken(count);
// result = x!
OperandToken temp = objects.factorial();
// temp2 = y-x
OperandToken temp2 = ((OperandToken) total.clone());
temp2 = temp2.subtract(objects);
// temp2 = (y-x)!
temp2 = temp2.factorial();
// temp = x! * (y-x)!
temp = temp.multiply(temp2);
// temp2 = y! / (x! * (y-x)!)
temp2 = total.factorial();
temp2 = temp2.divide(temp);
results[0][count] = ((DoubleNumberToken) temp2).getValueRe();
}
result = new DoubleNumberToken(results);
}
return result;
}