Examples of java.math.BigDecimal.unscaledValue()

java.math.BigDecimal.unscaledValue()
Returns a {@code BigInteger} whose value is the unscaledvalue of this {@code BigDecimal}. (Computes (this 10^this.scale()).) @return the unscaled value of this {@code BigDecimal}. @since 1.2

    int shift = -18;
    int resScale = 10;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = aNumber.movePointLeft(shift);
    assertTrue("incorrect scale", bNumber.scale() == resScale);
    assertTrue("incorrect value", bNumber.unscaledValue().toString().equals(a));
  }


  /**
   * Move the decimal point to the right; the shift value is positive.
   */

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    int shift = 18;
    int resScale = 10;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = aNumber.movePointRight(shift);
    assertTrue("incorrect scale", bNumber.scale() == resScale);
    assertTrue("incorrect value", bNumber.unscaledValue().toString().equals(a));
  }


  /**
   * Move the decimal point to the right; the shift value is positive.
   */

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    int shift = 30;
    int resScale = 0;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = aNumber.movePointRight(shift);
    assertTrue("incorrect scale", bNumber.scale() == resScale);
    assertTrue("incorrect value", bNumber.unscaledValue().toString().equals(b));
  }


  /**
   * Move the decimal point to the right; the shift value is positive.
   */

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    int shift = -18;
    int resScale = 46;
    BigDecimal aNumber = new BigDecimal(new BigInteger(a), aScale);
    BigDecimal bNumber = aNumber.movePointRight(shift);
    assertTrue("incorrect scale", bNumber.scale() == resScale);
    assertTrue("incorrect value", bNumber.unscaledValue().toString().equals(a));
  }


  /**
   * Move the decimal point to the right when the scale overflows.
   */

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     */
    public void testConstrBI() {
        String a = "1231212478987482988429808779810457634781384756794987";
        BigInteger bA = new BigInteger(a);
        BigDecimal aNumber = new BigDecimal(bA);
        assertEquals("incorrect value", bA, aNumber.unscaledValue());
        assertEquals("incorrect scale", 0, aNumber.scale());


        try {
            new BigDecimal((BigInteger) null);
          fail("No NullPointerException");

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    public void testConstrBIScale() {
        String a = "1231212478987482988429808779810457634781384756794987";
        BigInteger bA = new BigInteger(a);
        int aScale = 10;
        BigDecimal aNumber = new BigDecimal(bA, aScale);
        assertEquals("incorrect value", bA, aNumber.unscaledValue());
        assertEquals("incorrect scale", aScale, aNumber.scale());
    }


    /**
     * new BigDecimal(BigInteger value, MathContext)

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        RoundingMode rm = RoundingMode.CEILING;
        MathContext mc = new MathContext(precision, rm);
        String res = "1231212478987482988429808779810457634781384757";
        int resScale = -6;
        BigDecimal result = new BigDecimal(bA, mc);
        assertEquals("incorrect value", res, result.unscaledValue().toString());
        assertEquals("incorrect scale", resScale, result.scale());
    }


    /**
     * new BigDecimal(BigInteger value, int scale, MathContext)

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        RoundingMode rm = RoundingMode.CEILING;
        MathContext mc = new MathContext(precision, rm);
        String res = "1231212478987482988429808779810457634781384757";
        int resScale = 4;
        BigDecimal result = new BigDecimal(bA, aScale, mc);
        assertEquals("incorrect value", res, result.unscaledValue().toString());
        assertEquals("incorrect scale", resScale, result.scale());
    }


    /**
     * new BigDecimal(char[] value);

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    public void testConstrDouble() {
        double a = 732546982374982347892379283571094797.287346782359284756;
        int aScale = 0;
        BigInteger bA = new BigInteger("732546982374982285073458350476230656");
        BigDecimal aNumber = new BigDecimal(a);
        assertEquals("incorrect value", bA, aNumber.unscaledValue());
        assertEquals("incorrect scale", aScale, aNumber.scale());
    }


    /**
     * new BigDecimal(double, MathContext)

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        RoundingMode rm = RoundingMode.CEILING;
        MathContext mc = new MathContext(precision, rm);
        String res = "732546982374982285074";
        int resScale = -15;
        BigDecimal result = new BigDecimal(a, mc);
        assertEquals("incorrect value", res, result.unscaledValue().toString());
        assertEquals("incorrect scale", resScale, result.scale());
    }


    /**
     * new BigDecimal(0.1)

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