Examples with EvalEngine org.matheclipse.core.eval.EvalEngine used on opensource projects

Example 86 with EvalEngine

use of org.matheclipse.core.eval.EvalEngine in project symja_android_library by axkr.

the class SerializableTest method testASTRealMatrix.

public void testASTRealMatrix() {
    equalsCopy(new ASTRealMatrix(new double[][] { { 1.0, 2.0, 3.0 }, { 3.3, 4.4, 5.5 } }, false));
    // PseudoInverse({{1,2,3},{3,4,5}})
    EvalEngine engine = EvalEngine.get();
    IExpr result = engine.evaluate(F.PseudoInverse(F.List(F.List(F.C1, F.C2, F.C3), F.List(F.C4, F.C5, F.C6))));
    equalsCopy(result);
}

Example 87 with EvalEngine

use of org.matheclipse.core.eval.EvalEngine in project symja_android_library by axkr.

the class MMAFormTestCase method testWLForm004.

public void testWLForm004() {
    EvalEngine engine = new EvalEngine("", 256, 256, System.out, System.err, true);
    ExprParser parser = new ExprParser(engine, true);
    IExpr expr = parser.parse("{f'(x), f''(x), f'''(x)} // Together");
    assertEquals(expr.toMMA(), "Together[{f'[x],f''[x],Derivative[3][f][x]}]");
}

Example 88 with EvalEngine

use of org.matheclipse.core.eval.EvalEngine in project symja_android_library by axkr.

the class F method symjify.

/**
 * Parses a Java string to a Symja expression. May throw a SyntaxError exception, if the string
 * couldn't be parsed.
 *
 * @param str the expression which should be parsed
 * @param evaluate if <code>true</code> evaluate the parsed string
 * @return
 * @throws SyntaxError
 */
public static IExpr symjify(final String str, boolean evaluate) {
    EvalEngine engine = EvalEngine.get();
    ExprParser parser = new ExprParser(engine);
    IExpr temp = parser.parse(str);
    return evaluate ? engine.evaluate(temp) : temp;
}

Example 89 with EvalEngine

use of org.matheclipse.core.eval.EvalEngine in project symja_android_library by axkr.

the class F method complexNum.

public static IComplexNum complexNum(final IComplex value) {
    final IRational realFraction = value.getRealPart();
    final IRational imagFraction = value.getImaginaryPart();
    final EvalEngine engine = EvalEngine.get();
    if (engine.isArbitraryMode()) {
        return ApcomplexNum.valueOf(realFraction.toBigNumerator(), realFraction.toBigDenominator(), imagFraction.toBigNumerator(), imagFraction.toBigDenominator());
    }
    // double precision complex number
    double nr = realFraction.numerator().doubleValue();
    double dr = realFraction.denominator().doubleValue();
    double ni = imagFraction.numerator().doubleValue();
    double di = imagFraction.denominator().doubleValue();
    return complexNum(nr / dr, ni / di);
}

Example 90 with EvalEngine

use of org.matheclipse.core.eval.EvalEngine in project symja_android_library by axkr.

the class F method expandAll.

/**
 * Apply <code>ExpandAll()</code> to the given expression if it's an <code>IAST</code>. If
 * expanding wasn't possible this method returns the given argument.
 *
 * @param a the expression which should be evaluated
 * @param expandNegativePowers
 * @param distributePlus
 * @return the evaluated expression
 * @see EvalEngine#evaluate(IExpr)
 */
public static IExpr expandAll(IExpr a, boolean expandNegativePowers, boolean distributePlus) {
    if (a.isAST()) {
        EvalEngine engine = EvalEngine.get();
        IAST ast = engine.evalFlatOrderlessAttributesRecursive((IAST) a).orElse((IAST) a);
        return Algebra.expandAll(ast, null, expandNegativePowers, distributePlus, false, engine).orElse(ast);
    }
    return a;
}