Examples of org.apache.commons.math3.exception.MathArithmeticException

Package org.apache.commons.math3.exception

Examples of org.apache.commons.math3.exception.MathArithmeticException

org.apache.commons.math3.exception.MathArithmeticException
Base class for arithmetic exceptions. It is used for all the exceptions that have the semantics of the standard {@link ArithmeticException}, but must also provide a localized message. @since 3.0

                if (b < 0) {
                    // check for positive overflow with negative a, negative b
                    if (a >= Long.MAX_VALUE / b) {
                        ret = a * b;
                    } else {
                        throw new MathArithmeticException();
                    }
                } else if (b > 0) {
                    // check for negative overflow with negative a, positive b
                    if (Long.MIN_VALUE / b <= a) {
                        ret = a * b;
                    } else {
                        throw new MathArithmeticException();


                    }
                } else {
                    // assert b == 0
                    ret = 0;
                }
            } else if (a > 0) {
                // assert a > 0
                // assert b > 0


                // check for positive overflow with positive a, positive b
                if (a <= Long.MAX_VALUE / b) {
                    ret = a * b;
                } else {
                    throw new MathArithmeticException();
                }
            } else {
                // assert a == 0
                ret = 0;
            }

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     * @since 1.1
     */
    public static int subAndCheck(int x, int y) {
        long s = (long)x - (long)y;
        if (s < Integer.MIN_VALUE || s > Integer.MAX_VALUE) {
            throw new MathArithmeticException(LocalizedFormats.OVERFLOW_IN_SUBTRACTION, x, y);
        }
        return (int)s;
    }

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        long ret;
        if (b == Long.MIN_VALUE) {
            if (a < 0) {
                ret = a - b;
            } else {
                throw new MathArithmeticException(LocalizedFormats.OVERFLOW_IN_ADDITION, a, -b);
            }
        } else {
            // use additive inverse
            ret = addAndCheck(a, -b, LocalizedFormats.OVERFLOW_IN_ADDITION);
        }

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                if (b < 0) {
                    // check for negative overflow
                    if (Long.MIN_VALUE - b <= a) {
                        ret = a + b;
                    } else {
                        throw new MathArithmeticException(pattern, a, b);
                    }
                } else {
                    // opposite sign addition is always safe
                    ret = a + b;
                }
            } else {
                // assert a >= 0
                // assert b >= 0


                // check for positive overflow
                if (a <= Long.MAX_VALUE - b) {
                    ret = a + b;
                } else {
                    throw new MathArithmeticException(pattern, a, b);
                }
            }
        }
        return ret;
    }

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        final double norm = getNorm();
        final double vNorm = v.getNorm();


        if (norm == 0 ||
            vNorm == 0) {
            throw new MathArithmeticException(LocalizedFormats.ZERO_NORM);
        }
        return dotProduct(v) / (norm * vNorm);
    }

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     * @param den the denominator.
     * @throws MathArithmeticException if the denominator is {@code zero}
     */
    public Fraction(int num, int den) {
        if (den == 0) {
            throw new MathArithmeticException(LocalizedFormats.ZERO_DENOMINATOR_IN_FRACTION,
                                              num, den);
        }
        if (den < 0) {
            if (num == Integer.MIN_VALUE ||
                den == Integer.MIN_VALUE) {
                throw new MathArithmeticException(LocalizedFormats.OVERFLOW_IN_FRACTION,
                                                  num, den);
            }
            num = -num;
            den = -den;
        }

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     * Return the additive inverse of this fraction.
     * @return the negation of this fraction.
     */
    public Fraction negate() {
        if (numerator==Integer.MIN_VALUE) {
            throw new MathArithmeticException(LocalizedFormats.OVERFLOW_IN_FRACTION, numerator, denominator);
        }
        return new Fraction(-numerator, denominator);
    }

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        int d2 = (tmodd1==0)?d1:ArithmeticUtils.gcd(tmodd1, d1);


        // result is (t/d2) / (u'/d1)(v'/d2)
        BigInteger w = t.divide(BigInteger.valueOf(d2));
        if (w.bitLength() > 31) {
            throw new MathArithmeticException(LocalizedFormats.NUMERATOR_OVERFLOW_AFTER_MULTIPLY,
                                              w);
        }
        return new Fraction (w.intValue(),
                ArithmeticUtils.mulAndCheck(denominator/d1,
                        fraction.denominator/d2));

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    public Fraction divide(Fraction fraction) {
        if (fraction == null) {
            throw new NullArgumentException(LocalizedFormats.FRACTION);
        }
        if (fraction.numerator == 0) {
            throw new MathArithmeticException(LocalizedFormats.ZERO_FRACTION_TO_DIVIDE_BY,
                                              fraction.numerator, fraction.denominator);
        }
        return multiply(fraction.reciprocal());
    }

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     * @return a new fraction instance, with the numerator and denominator reduced
     * @throws MathArithmeticException if the denominator is {@code zero}
     */
    public static Fraction getReducedFraction(int numerator, int denominator) {
        if (denominator == 0) {
            throw new MathArithmeticException(LocalizedFormats.ZERO_DENOMINATOR_IN_FRACTION,
                                              numerator, denominator);
        }
        if (numerator==0) {
            return ZERO; // normalize zero.
        }
        // allow 2^k/-2^31 as a valid fraction (where k>0)
        if (denominator==Integer.MIN_VALUE && (numerator&1)==0) {
            numerator/=2; denominator/=2;
        }
        if (denominator < 0) {
            if (numerator==Integer.MIN_VALUE ||
                    denominator==Integer.MIN_VALUE) {
                throw new MathArithmeticException(LocalizedFormats.OVERFLOW_IN_FRACTION,
                                                  numerator, denominator);
            }
            numerator = -numerator;
            denominator = -denominator;
        }

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