public void apply(UState state, UStack stack) {
UNumber x = stack.pop();
if (!(x instanceof UnitNum)) {
x = new UnitNum(x, state.angleUnit);
}
stack.push(UMath.tan(x));
}
public void apply(UState state, UStack stack) {
UNumber x = stack.pop();
UNumber y = stack.pop();
Unit to = (x instanceof UnitNum) ? ((UnitNum) x).unit : Unit.NONE;
Unit from;
if (y instanceof UnitNum) {
from = ((UnitNum) y).unit;
y = ((UnitNum) y).value;
} else {
from = Unit.NONE;
}
stack.push(new UnitNum(to.from(y, from), to));
}
public void apply(UState state, UStack stack) {
stack.push(stack.pop().neg());
}