commons-statistics-descriptive/src/main/java/org/apache/commons/statistics/descriptive/IntSumOfSquares.java [196:246]:
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    @Override
    public int getAsInt() {
        return sumSq.toIntExact();
    }

    /**
     * Gets the sum of squares of all input values.
     *
     * <p>When no values have been added, the result is zero.
     *
     * <p>Warning: This will raise an {@link ArithmeticException}
     * if the result is not within the range {@code [0, 2^63)}.
     *
     * @return sum of all values.
     * @throws ArithmeticException if the {@code result} overflows a {@code long}
     * @see #getAsBigInteger()
     */
    @Override
    public long getAsLong() {
        return sumSq.toLongExact();
    }

    /**
     * Gets the sum of squares of all input values.
     *
     * <p>When no values have been added, the result is zero.
     *
     * <p>Note that this conversion can lose information about the precision of the
     * {@code BigInteger} value.
     *
     * @return sum of squares of all values.
     * @see #getAsBigInteger()
     */
    @Override
    public double getAsDouble() {
        return sumSq.toDouble();
    }

    /**
     * Gets the sum of squares of all input values.
     *
     * <p>When no values have been added, the result is zero.
     *
     * @return sum of squares of all values.
     */
    @Override
    public BigInteger getAsBigInteger() {
        return sumSq.toBigInteger();
    }

    @Override
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commons-statistics-descriptive/src/main/java/org/apache/commons/statistics/descriptive/LongSumOfSquares.java [174:224]:
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    @Override
    public int getAsInt() {
        return sumSq.toIntExact();
    }

    /**
     * Gets the sum of squares of all input values.
     *
     * <p>When no values have been added, the result is zero.
     *
     * <p>Warning: This will raise an {@link ArithmeticException}
     * if the result is not within the range {@code [0, 2^63)}.
     *
     * @return sum of all values.
     * @throws ArithmeticException if the {@code result} overflows a {@code long}
     * @see #getAsBigInteger()
     */
    @Override
    public long getAsLong() {
        return sumSq.toLongExact();
    }

    /**
     * Gets the sum of squares of all input values.
     *
     * <p>When no values have been added, the result is zero.
     *
     * <p>Note that this conversion can lose information about the precision of the
     * {@code BigInteger} value.
     *
     * @return sum of squares of all values.
     * @see #getAsBigInteger()
     */
    @Override
    public double getAsDouble() {
        return sumSq.toDouble();
    }

    /**
     * Gets the sum of squares of all input values.
     *
     * <p>When no values have been added, the result is zero.
     *
     * @return sum of squares of all values.
     */
    @Override
    public BigInteger getAsBigInteger() {
        return sumSq.toBigInteger();
    }

    @Override
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