Class BigReal

    • Field Detail

      • ZERO

        public static final BigReal ZERO
        A big real representing 0.
      • ONE

        public static final BigReal ONE
        A big real representing 1.
    • Constructor Detail

      • BigReal

        public BigReal​(BigDecimal val)
        Build an instance from a BigDecimal.
        Parameters:
        val - value of the instance
      • BigReal

        public BigReal​(BigInteger val)
        Build an instance from a BigInteger.
        Parameters:
        val - value of the instance
      • BigReal

        public BigReal​(BigInteger unscaledVal,
                       int scale)
        Build an instance from an unscaled BigInteger.
        Parameters:
        unscaledVal - unscaled value
        scale - scale to use
      • BigReal

        public BigReal​(BigInteger unscaledVal,
                       int scale,
                       MathContext mc)
        Build an instance from an unscaled BigInteger.
        Parameters:
        unscaledVal - unscaled value
        scale - scale to use
        mc - to used
      • BigReal

        public BigReal​(BigInteger val,
                       MathContext mc)
        Build an instance from a BigInteger.
        Parameters:
        val - value of the instance
        mc - context to use
      • BigReal

        public BigReal​(char[] in)
        Build an instance from a characters representation.
        Parameters:
        in - character representation of the value
      • BigReal

        public BigReal​(char[] in,
                       int offset,
                       int len)
        Build an instance from a characters representation.
        Parameters:
        in - character representation of the value
        offset - offset of the first character to analyze
        len - length of the array slice to analyze
      • BigReal

        public BigReal​(char[] in,
                       int offset,
                       int len,
                       MathContext mc)
        Build an instance from a characters representation.
        Parameters:
        in - character representation of the value
        offset - offset of the first character to analyze
        len - length of the array slice to analyze
        mc - context to use
      • BigReal

        public BigReal​(char[] in,
                       MathContext mc)
        Build an instance from a characters representation.
        Parameters:
        in - character representation of the value
        mc - context to use
      • BigReal

        public BigReal​(double val)
        Build an instance from a double.
        Parameters:
        val - value of the instance
      • BigReal

        public BigReal​(double val,
                       MathContext mc)
        Build an instance from a double.
        Parameters:
        val - value of the instance
        mc - context to use
      • BigReal

        public BigReal​(int val)
        Build an instance from an int.
        Parameters:
        val - value of the instance
      • BigReal

        public BigReal​(int val,
                       MathContext mc)
        Build an instance from an int.
        Parameters:
        val - value of the instance
        mc - context to use
      • BigReal

        public BigReal​(long val)
        Build an instance from a long.
        Parameters:
        val - value of the instance
      • BigReal

        public BigReal​(long val,
                       MathContext mc)
        Build an instance from a long.
        Parameters:
        val - value of the instance
        mc - context to use
      • BigReal

        public BigReal​(String val)
        Build an instance from a String representation.
        Parameters:
        val - character representation of the value
      • BigReal

        public BigReal​(String val,
                       MathContext mc)
        Build an instance from a String representation.
        Parameters:
        val - character representation of the value
        mc - context to use
    • Method Detail

      • getReal

        public double getReal()
        Get the real value of the number.
        Specified by:
        getReal in interface FieldElement<BigReal>
        Returns:
        real value
      • getRoundingMode

        public RoundingMode getRoundingMode()
        Gets the rounding mode for division operations The default is RoundingMode.HALF_UP
        Returns:
        the rounding mode.
      • setRoundingMode

        public void setRoundingMode​(RoundingMode roundingMode)
        Sets the rounding mode for decimal divisions.
        Parameters:
        roundingMode - rounding mode for decimal divisions
      • getScale

        public int getScale()
        Sets the scale for division operations. The default is 64
        Returns:
        the scale
      • setScale

        public void setScale​(int scale)
        Sets the scale for division operations.
        Parameters:
        scale - scale for division operations
      • add

        public BigReal add​(BigReal a)
        Compute this + a.
        Specified by:
        add in interface FieldElement<BigReal>
        Parameters:
        a - element to add
        Returns:
        a new element representing this + a
      • subtract

        public BigReal subtract​(BigReal a)
        Compute this - a.
        Specified by:
        subtract in interface FieldElement<BigReal>
        Parameters:
        a - element to subtract
        Returns:
        a new element representing this - a
      • negate

        public BigReal negate()
        Returns the additive inverse of this element.
        Specified by:
        negate in interface FieldElement<BigReal>
        Returns:
        the opposite of this.
      • multiply

        public BigReal multiply​(BigReal a)
        Compute this × a.
        Specified by:
        multiply in interface FieldElement<BigReal>
        Parameters:
        a - element to multiply
        Returns:
        a new element representing this × a
      • multiply

        public BigReal multiply​(int n)
        Compute n × this. Multiplication by an integer number is defined as the following sum \[ n \times \mathrm{this} = \sum_{i=1}^n \mathrm{this} \]
        Specified by:
        multiply in interface FieldElement<BigReal>
        Parameters:
        n - Number of times this must be added to itself.
        Returns:
        A new element representing n × this.
      • doubleValue

        public double doubleValue()
        Get the double value corresponding to the instance.
        Returns:
        double value corresponding to the instance
      • bigDecimalValue

        public BigDecimal bigDecimalValue()
        Get the BigDecimal value corresponding to the instance.
        Returns:
        BigDecimal value corresponding to the instance
      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object