List of round() Examples

Examples of round()

client.net.sf.saxon.ce.value.NumericValue.round()
Implement the XPath round() function @return a value, of the same type as that supplied, rounded towards thenearest whole number (0.5 rounded up)
com.foundationdb.server.types.common.BigDecimalWrapper.round()
java.math.BigDecimal.round()
Returns a {@code BigDecimal} rounded according to the{@code MathContext} settings. If the precision setting is 0 thenno rounding takes place.
The effect of this method is identical to that of the {@link #plus(MathContext)} method. @param mc the context to use. @return a {@code BigDecimal} rounded according to the {@code MathContext} settings. @throws ArithmeticException if the rounding mode is{@code UNNECESSARY} and the{@code BigDecimal} operation would require rounding. @see #plus(MathContext) @since 1.5
nav.util.math.NumUtil.Round()
Rounds a number. @param Rval number to be rounded @param Rpl number of decimal places @return rounded number @since 0.1
net.algart.math.patterns.Pattern.round()
Returns this pattern, every point of which is rounded to the nearest integer point. The result is always ordinary integer pattern (see the {@link Pattern comments to this interface}, section "Uniform-grid patterns").
More precisely, the resulting pattern:
1. consists of all points, obtained from all points of this pattern by rounding by the call point. {@link Point#toRoundedPoint() toRoundedPoint()}. {@link IPoint#toPoint() toPoint()};
2. has zero origin {@link UniformGridPattern#originOfGrid()}=(0,0,...,0) and unit steps {@link UniformGridPattern#stepsOfGrid()}={1,1,..,1}.
Note: the number of points in the result can be less than {@link #pointCount()}, because some real points can be rounded to the same integer points.

Warning! If this object is not {@link DirectPointSetPattern}and is not {@link RectangularPattern}, this method can work slowly for some large patterns: the required time can be O(N), where N is the number of points. In these cases, this method can also throw {@link TooManyPointsInPatternError}or OutOfMemoryError. The situation is like in {@link #points()} and {@link #roundedPoints()} method.
There is a guarantee, that if this object implements {@link DirectPointSetPattern} interface,then this method requires not greater than O(N) operations and memory (N= {@link #pointCount() pointCount()}) and never throws {@link TooManyPointsInPatternError}.
There is a guarantee, that if this object implements {@link RectangularPattern} interface,then this method works quickly (O(1) operations) and without exceptions. It is an important difference from {@link #points()} and {@link #roundedPoints()} method.
The theorem I, described in the {@link Pattern comments to this interface}, section "Coordinate restrictions", provides a guarantee that this method never throws {@link TooLargePatternCoordinatesException}. @return the integer pattern, geometrically nearest to this one. @throws TooManyPointsInPatternError if this pattern is not {@link DirectPointSetPattern} andnot {@link RectangularPattern} and if, at the same time, the numberof points is greater than Integer.MAX_VALUE or, in some rare situations, is near this limit (OutOfMemoryError can be also thrown instead of this exception).
net.sf.saxon.value.NumericValue.round()
Implement the XPath round() function @return a value, of the same type as that supplied, rounded towards thenearest whole number (0.5 rounded up)
org.apache.velocity.tools.generic.MathTool.round()
Rounds a number to the nearest whole Integer @param num the number to round @return the number rounded to the nearest whole Integeror null if it's invalid @see java.lang.Math#rint(double)
org.bouncycastle.pqc.math.ntru.polynomial.BigDecimalPolynomial.round()
Rounds all coefficients to the nearest integer. @return a new polynomial with BigInteger coefficients
org.elasticsearch.common.rounding.TimeZoneRounding.round()
org.exist.xquery.value.NumericValue.round()
org.hsqldb.types.DateTimeType.round()
org.hsqldb.types.Type.round()
org.jExigo.FixedDecimalNumber.round()
rounds to the least number of significant digits @param leastSignificantDigits @throws Exception - most likely passed a negative number
org.pdf4j.saxon.value.NumericValue.round()
Implement the XPath round() function @return a value, of the same type as that supplied, rounded towards thenearest whole number (0.5 rounded up)
universalelectricity.api.vector.Vector3.round()

Examples of java.math.BigDecimal.round()

                 * The first derivative of sinh(x) is cosh(x), so the absolute error
                 * in the result is cosh(x)*errx, and the relative error is coth(x)*errx = errx/tanh(x)
                 */
                //double eps = Math.tanh(x.doubleValue());                                       // removed by l.bruninx, 2012-03-19
                //MathContext mc = new MathContext(err2prec(0.5 * x.ulp().doubleValue() / eps)); // removed by l.bruninx, 2012-03-19
                return resul.round(mc);
            }
            else {
                BigDecimal xhighpr = scalePrec(x, 2);
                /* Simple Taylor expansion, sum_{i=0..infinity} x^(2i+1)/(2i+1)! */
                BigDecimal resul = xhighpr;

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Examples of java.math.BigDecimal.round()

             * The absolute error in arcsinh x is err(x)/sqrt(1+x^2)
             */
            double xDbl = x.doubleValue();
            double eps = 0.5 * x.ulp().doubleValue() / Math.hypot(1., xDbl);
            MathContext mc = new MathContext(err2prec(logx.doubleValue(), eps));
            return logx.round(mc);
        }
    } /* BigDecimalMath.asinh */


    /** The inverse hyperbolic cosine.
     * @param x The argument.

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Examples of java.math.BigDecimal.round()

             * The absolute error in arcsinh x is err(x)/sqrt(x^2-1)
             */
            double xDbl = x.doubleValue();
            double eps = 0.5 * x.ulp().doubleValue() / Math.sqrt(xDbl * xDbl - 1.);
            MathContext mc = new MathContext(err2prec(logx.doubleValue(), eps));
            return logx.round(mc);
        }
    } /* BigDecimalMath.acosh */


    /** The Gamma function.
     * @param x The argument.

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Examples of java.math.BigDecimal.round()

                     * smaller than the relative error in z^n/n (the absolute error of thelatter  is the
                     * absolute error in z)
                     */
                    BigDecimal c = divideRound(z.pow(n, mcloc), n);
                    MathContext m = new MathContext(err2prec(n * z.ulp().doubleValue() / 2. / z.doubleValue()));
                    c = c.round(m);


                    /* At larger n, zeta(n)-1 is roughly 1/2^n. The product is c/2^n.
                     * The relative error in c is c.ulp/2/c . The error in the product should be small versus eps/10.
                     * Error from 1/2^n is c*err(sigma-1).
                     * We need a relative error of zeta-1 of the order of c.ulp/50/c. This is an absolute

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Examples of java.math.BigDecimal.round()

            double eps = 0.5 * xUlpDbl / Math.abs(xDbl);
            for (int i = 1; i < n; i++) {
                eps += 0.5 * xUlpDbl / Math.abs(xDbl + i);
                resul = resul.multiply(xhighpr.add(new BigDecimal(i)));
                final MathContext mcloc = new MathContext(4 + err2prec(eps));
                resul = resul.round(mcloc);
            }
            return resul.round(new MathContext(err2prec(eps)));
        }
    } /* BigDecimalMath.pochhammer */

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Examples of java.math.BigDecimal.round()

                eps += 0.5 * xUlpDbl / Math.abs(xDbl + i);
                resul = resul.multiply(xhighpr.add(new BigDecimal(i)));
                final MathContext mcloc = new MathContext(4 + err2prec(eps));
                resul = resul.round(mcloc);
            }
            return resul.round(new MathContext(err2prec(eps)));
        }
    } /* BigDecimalMath.pochhammer */


    /** Reduce value to the interval [0,2*Pi].
     * @param x the original value

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Examples of java.math.BigDecimal.round()


        /*
         * The actual precision is set by the input value, its absolute value of x.ulp()/2.
         */
        mc = new MathContext(err2prec(res.doubleValue(), x.ulp().doubleValue() / 2.));
        return res.round(mc);
    } /* mod2pi */


    /** Reduce value to the interval [-Pi/2,Pi/2].
     * @param x The original value
     * @return The value modulo pi, shifted to the interval from -Pi/2 to Pi/2.

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Examples of java.math.BigDecimal.round()


        /*
         * The actual precision is set by the input value, its absolute value of x.ulp()/2.
         */
        mc = new MathContext(err2prec(res.doubleValue(), x.ulp().doubleValue() / 2.));
        return res.round(mc);
    } /* modpi */


    /** Riemann zeta function.
     * @param n The positive integer argument.
     * @param mc Specification of the accuracy of the result.

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Examples of java.math.BigDecimal.round()

        /*
         * The estimation of the absolute error in the result is |err(y)|+|err(x)|
         */
        double errR = Math.abs(y.ulp().doubleValue() / 2.) + Math.abs(x.ulp().doubleValue() / 2.);
        MathContext mc = new MathContext(err2prec(resul.doubleValue(), errR));
        return resul.round(mc);
    } /* addRound */


    /** Add and round according to the larger of the two ulp's.
     * @param x The left summand
     * @param y The right summand

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Examples of java.math.BigDecimal.round()

        /*
         * The estimation of the absolute error in the result is |err(y)|+|err(x)|
         */
        double errR = Math.abs(y.ulp().doubleValue() / 2.) + Math.abs(x.ulp().doubleValue() / 2.);
        MathContext mc = new MathContext(err2prec(resul.doubleValue(), errR));
        return resul.round(mc);
    } /* subtractRound */


    /** Subtract and round according to the larger of the two ulp's.
     * @param x The left summand
     * @param y The right summand

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