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

Example 91 with Operator

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

the class SquareRoot method determineExponent.

public void determineExponent(ExponentContext context) {
    Operator op = operands[0];
    op.determineExponent(context);
    if (op.exponent == UNKNOWN)
        return;
    int pow = op.centerPower() / 2;
    int centerNew = MSB / 2;
    int exponentNew = pow + MSB - centerNew;
    updateExponent(context, exponentNew, centerNew);
}

Example 92 with Operator

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

the class SumSquares method determineExponentNext.

public void determineExponentNext() {
    // A
    Operator op0 = operands[0];
    op0.exponentNext = op0.exponent;
    op0.determineExponentNext();
}

Example 93 with Operator

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

the class SumSquares method determineExponent.

public void determineExponent(ExponentContext context) {
    // This function is related to both Norm and Power. See those classes for similar processing.
    // A
    Operator op0 = operands[0];
    op0.determineExponent(context);
    // Determine number of elements in A
    Instance instance = new Instance() {

        // all AccessVariable objects will reach here first, and get back the Variable.type field
        public Type get(VariableReference r) throws EvaluationException {
            return r.variable.type;
        }
    };
    Matrix A = (Matrix) op0.eval(instance);
    int Asize = A.rows() * A.columns();
    if (op0.exponent != UNKNOWN) {
        // log2(Asize)
        int shift = (int) Math.floor(Math.log(Asize) / Math.log(2));
        int centerNew = MSB / 2;
        int exponentNew = op0.centerPower() * 2 + shift + MSB - centerNew;
        updateExponent(context, exponentNew, centerNew);
    }
}

Example 94 with Operator

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

the class Uniform method determineExponent.

public void determineExponent(ExponentContext context) {
    if (operands.length == 0) {
        // Current implementation never quite reaches 1, only [0,1).
        updateExponent(context, -1, MSB);
        return;
    }
    for (int i = 0; i < operands.length; i++) operands[i].determineExponent(context);
    if (operands.length == 1) {
        Operator op = operands[0];
        if (op.exponent != UNKNOWN)
            updateExponent(context, op.exponent, op.center);
        return;
    }
    // operands.length >= 2
    // lo
    Operator op0 = operands[0];
    // hi
    Operator op1 = operands[1];
    int exp = Math.max(op0.exponent, op1.exponent);
    int cent = (op0.center + op1.center) / 2;
    if (exp != UNKNOWN)
        updateExponent(context, exp, cent);
}

Example 95 with Operator

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

the class AND method simplify.

public Operator simplify(Variable from, boolean evalOnly) {
    Operator result = super.simplify(from, evalOnly);
    if (result != this)
        return result;
    if (operand0.isScalar()) {
        from.changed = true;
        result = operand1;
        if (operand0.getDouble() == 0) {
            if (!evalOnly)
                operand1.releaseDependencies(from);
            result = new Constant(0);
        }
        result.parent = parent;
        return result;
    } else if (operand1.isScalar()) {
        from.changed = true;
        result = operand0;
        if (operand1.getDouble() == 0) {
            if (!evalOnly)
                operand0.releaseDependencies(from);
            result = new Constant(0);
        }
        result.parent = parent;
        return result;
    }
    return this;
}