Examples of java.math.BigDecimal.pow()

java.math.BigDecimal.pow()
Returns a {@code BigDecimal} whose value is(thisⁿ), The power is computed exactly, to unlimited precision.
The parameter {@code n} must be in the range 0 through999999999, inclusive. {@code ZERO.pow(0)} returns {@link #ONE}. Note that future releases may expand the allowable exponent range of this method. @param n power to raise this {@code BigDecimal} to. @return thisⁿ @throws ArithmeticException if {@code n} is out of range. @since 1.5

        }
        BigDecimal mean = mean(numbers, context);
        List<BigDecimal> squares = new ArrayList<BigDecimal>();
        for (BigDecimal number : numbers) {
            BigDecimal XminMean = number.subtract(mean);
            squares.add(XminMean.pow(2, context));
        }
        BigDecimal sum = sum(squares);
        return sum.divide(new BigDecimal(biasCorrected ? numbers.size() - 1 : numbers.size()), context);


    }

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                }
            }
            final BigDecimal nP = new BigDecimal(numberOfPoints, mContext);
            BigDecimal tmp1 = pmc.subtract(c.multiply(pc, mContext), mContext);
            tmp1 = tmp1.multiply(nP);
            tmp1 = tmp1.pow(2, mContext);
            BigDecimal tmp2 = c.pow(2, mContext);
            tmp2 = BigDecimal.ONE.subtract(tmp2, mContext);
            tmp2 = tmp2.multiply(two, mContext);
            tmp2 = tmp2.divide(tmp1, mContext);

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            }


            // 2 / pow(numberOfPoints * pmc, 2);
            final BigDecimal nP = new BigDecimal(numberOfPoints, mContext);
            BigDecimal tmp1 = pmc.multiply(nP, mContext);
            tmp1 = tmp1.pow(2, mContext);
            BigDecimal tmp2 = two.divide(tmp1, mContext);


            points[iMax] = BigDecimal.ZERO;
            weights[iMax] = tmp2;
        }

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                    exSc -= exsub;
                    MathContext mctmp = new MathContext(expxby10.precision() - exsub + 2);
                    int pex = 1;
                    while (exsub-- > 0)
                        pex *= 10;
                    expxby10 = expxby10.pow(pex, mctmp);
                }
                return expxby10.round(mc);
            }
        }
    } /* BigDecimalMath.exp */

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             * So the precision here is matching the precisionn requested by mc, and the precision
             * requested for 2*pi is in absolute terms adjusted.
             */
            MathContext mcloc = new MathContext(2 + mc.getPrecision() + (int) (Math.log10((double) (n))));
            BigDecimal ftrm = pi(mcloc).multiply(TWO,mcloc);
            ftrm = ftrm.pow(n,mcloc);
            ftrm = ftrm.multiply(betsum.BigDecimalValue(mcloc),mcloc);
            BigDecimal exps = new BigDecimal(0);


            /* the basic accuracy of the accumulated terms before multiplication with 2
                        */

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            BigDecimal nd = n.getDecimalValue();
            long le = e.longValue();
            if (le > Integer.MAX_VALUE || le < Integer.MIN_VALUE) {
                throw new XPathException("exponent out of range");
            }
            return new DecimalValue(nd.pow((int)le));
            // Note JDK 1.5 dependency
//            try {
//                Class bigDecimalClass = nd.getClass();
//                Method pow = bigDecimalClass.getMethod("pow", new Class[]{int.class});
//                Integer[] argValues = {new Integer((int)le)};

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                }
            }
            final BigDecimal nP = new BigDecimal(numberOfPoints, mContext);
            BigDecimal tmp1 = pmc.subtract(c.multiply(pc, mContext), mContext);
            tmp1 = tmp1.multiply(nP);
            tmp1 = tmp1.pow(2, mContext);
            BigDecimal tmp2 = c.pow(2, mContext);
            tmp2 = BigDecimal.ONE.subtract(tmp2, mContext);
            tmp2 = tmp2.multiply(two, mContext);
            tmp2 = tmp2.divide(tmp1, mContext);

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            }


            // 2 / pow(numberOfPoints * pmc, 2);
            final BigDecimal nP = new BigDecimal(numberOfPoints, mContext);
            BigDecimal tmp1 = pmc.multiply(nP, mContext);
            tmp1 = tmp1.pow(2, mContext);
            BigDecimal tmp2 = two.divide(tmp1, mContext);


            points[iMax] = BigDecimal.ZERO;
            weights[iMax] = tmp2;
        }

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    List<BigDecimal> newDigits = new ArrayList<BigDecimal>();
    BigDecimal number = new BigDecimal(0.5);
    
    for(int digit = 0; digit < HyperReal.MAX_DIGITS; digit++) {
      newDigits.add(digit, number.pow(digit) );
    }
    HyperReal infinitesimal = new HyperReal( newDigits);
    
    System.out.println("op1 = " + op1 + " op1.standardPart = " + op1.standardPart );
    System.out.println("op2 standard part = " + op2.standardPart);

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        }
        BigDecimal mean = mean(numbers, context);
        List<BigDecimal> squares = new ArrayList<BigDecimal>();
        for (BigDecimal number : numbers) {
            BigDecimal XminMean = number.subtract(mean);
            squares.add(XminMean.pow(2, context));
        }
        BigDecimal sum = sum(squares);
        return sum.divide(new BigDecimal(biasCorrected ? numbers.size() - 1 : numbers.size()), context);


    }

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