Examples with Operator gov.sandia.n2a.language.Operator used on opensource projects

Example 96 with Operator

use of gov.sandia.n2a.language.Operator in project n2a by frothga.

the class Scalar method convert.

/**
 *        General utility: given a string containing a number with units, convert to the scaled SI value.
 */
public static double convert(String expression) {
    try {
        Operator op = Operator.parse(expression);
        double sign = 1;
        if (op instanceof Negate) {
            op = ((Negate) op).operand;
            sign = -1;
        }
        if (!(op instanceof Constant))
            return 0;
        Type result = ((Constant) op).value;
        if (result instanceof Scalar)
            return ((Scalar) result).value * sign;
    } catch (Exception e) {
    }
    return 0;
}

Example 97 with Operator

use of gov.sandia.n2a.language.Operator in project n2a by frothga.

the class Log method determineExponent.

public void determineExponent(ExponentContext context) {
    Operator op = operands[0];
    op.determineExponent(context);
    if (op.exponent == UNKNOWN)
        return;
    int o = op.centerPower();
    int p = 0;
    if (o != 0)
        p = (int) (Math.signum(o) * Math.round(Math.log(Math.abs(o)) / Math.log(2)));
    int centerNew = MSB / 2;
    int exponentNew = p + MSB - centerNew;
    updateExponent(context, exponentNew, centerNew);
}

Example 98 with Operator

use of gov.sandia.n2a.language.Operator in project n2a by frothga.

the class Min method simplify.

public Operator simplify(Variable from, boolean evalOnly) {
    Operator result = super.simplify(from, evalOnly);
    if (result != this)
        return result;
    // Check if Min appears as an operand. If so, merge its operands into ours
    ArrayList<Operator> newOperands = new ArrayList<Operator>(operands.length);
    boolean changed = false;
    for (Operator o : operands) {
        if (o instanceof Min) {
            Min m = (Min) o;
            newOperands.addAll(Arrays.asList(m.operands));
            changed = true;
        } else {
            newOperands.add(o);
        }
    }
    if (changed) {
        from.changed = true;
        Min newMin = new Min();
        newMin.parent = parent;
        newMin.operands = newOperands.toArray(new Operator[0]);
        for (Operator o : newMin.operands) o.parent = newMin;
        return result;
    }
    return this;
}

Example 99 with Operator

use of gov.sandia.n2a.language.Operator in project n2a by frothga.

the class Output method determineExponentNext.

public void determineExponentNext() {
    // Value
    Operator op = operands[1];
    op.exponentNext = exponentNext;
    op.determineExponentNext();
    // Column identifier (name or index)
    if (operands.length >= 3) {
        op = operands[2];
        if (operands.length > 3 && operands[3].getString().contains("raw")) {
            // index, so pure integer
            op.exponentNext = MSB;
        } else {
            // name; can be a string or a float
            op.exponentNext = op.exponent;
        }
        op.determineExponentNext();
    }
}

Example 100 with Operator

use of gov.sandia.n2a.language.Operator in project n2a by frothga.

the class Add method simplify.

public Operator simplify(Variable from, boolean evalOnly) {
    Operator result = super.simplify(from, evalOnly);
    if (result != this)
        return result;
    if (// 0+B --> B
    operand0.isScalar() && operand0.getDouble() == 0) {
        from.changed = true;
        operand1.parent = parent;
        return operand1;
    } else if (// A+0 --> A
    operand1.isScalar() && operand1.getDouble() == 0) {
        from.changed = true;
        operand0.parent = parent;
        return operand0;
    } else if (// A+(-B) --> A-B
    operand1 instanceof Negate) {
        from.changed = true;
        Subtract s = new Subtract();
        s.parent = parent;
        s.operand0 = operand0;
        s.operand0.parent = s;
        s.operand1 = ((Negate) operand1).operand;
        s.operand1.parent = s;
        return s;
    }
    return this;
}