Class: Rational

Inherits:

Numeric

• Object
• Numeric
• Rational

Defined in:

lib/bigdecimal/util.rb,
sig/big_decimal.rbs,
sig/big_decimal_util.rbs

Instance Method Summary

• #* ⇒ Object
  Performs multiplication.
• #+ ⇒ Object
  Performs addition.
• #- ⇒ Object
  Performs subtraction.
• #/ ⇒ Object
  Performs division.
• #to_d(precision = 0) ⇒ BigDecimal
  Returns the value as a BigDecimal.

Instance Method Details

#*(arg0) ⇒ BigDecimal #* ⇒ void

Performs multiplication.

Rational(2, 3)  * Rational(2, 3)   #=> (4/9)
Rational(900)   * Rational(1)      #=> (900/1)
Rational(-2, 9) * Rational(-9, 2)  #=> (1/1)
Rational(9, 8)  * 4                #=> (9/2)
Rational(20, 9) * 9.8              #=> 21.77777777777778

Overloads:

• #*(arg0) ⇒ BigDecimal

  Parameters:

  • arg0 (BigDecimal)

  Returns:

  • (BigDecimal)
• #* ⇒ void

  This method returns an undefined value.

# File 'sig/big_decimal.rbs', line 1409

def *: (BigDecimal) -> BigDecimal
| ...

#+(arg0) ⇒ BigDecimal #+ ⇒ void

Performs addition.

Rational(2, 3)  + Rational(2, 3)   #=> (4/3)
Rational(900)   + Rational(1)      #=> (901/1)
Rational(-2, 9) + Rational(-9, 2)  #=> (-85/18)
Rational(9, 8)  + 4                #=> (41/8)
Rational(20, 9) + 9.8              #=> 12.022222222222222

Overloads:

• #+(arg0) ⇒ BigDecimal

  Parameters:

  • arg0 (BigDecimal)

  Returns:

  • (BigDecimal)
• #+ ⇒ void

  This method returns an undefined value.

# File 'sig/big_decimal.rbs', line 1424

def +: (BigDecimal) -> BigDecimal
| ...

#-(arg0) ⇒ BigDecimal #- ⇒ void

Performs subtraction.

Rational(2, 3)  - Rational(2, 3)   #=> (0/1)
Rational(900)   - Rational(1)      #=> (899/1)
Rational(-2, 9) - Rational(-9, 2)  #=> (77/18)
Rational(9, 8)  - 4                #=> (-23/8)
Rational(20, 9) - 9.8              #=> -7.577777777777778

Overloads:

• #-(arg0) ⇒ BigDecimal

  Parameters:

  • arg0 (BigDecimal)

  Returns:

  • (BigDecimal)
• #- ⇒ void

  This method returns an undefined value.

# File 'sig/big_decimal.rbs', line 1439

def -: (BigDecimal) -> BigDecimal
| ...

#/(arg0) ⇒ BigDecimal #/ ⇒ void

Performs division.

Rational(2, 3)  / Rational(2, 3)   #=> (1/1)
Rational(900)   / Rational(1)      #=> (900/1)
Rational(-2, 9) / Rational(-9, 2)  #=> (4/81)
Rational(9, 8)  / 4                #=> (9/32)
Rational(20, 9) / 9.8              #=> 0.22675736961451246

Overloads:

• #/(arg0) ⇒ BigDecimal

  Parameters:

  • arg0 (BigDecimal)

  Returns:

  • (BigDecimal)
• #/ ⇒ void

  This method returns an undefined value.

# File 'sig/big_decimal.rbs', line 1394

def /: (BigDecimal) -> BigDecimal
| ...

#to_d(precision = 0) ⇒ BigDecimal

Returns the value as a BigDecimal.

The precision parameter is used to determine the number of significant digits for the result. When precision is set to 0, the number of digits to represent the float being converted is determined automatically. The default precision is 0.

require 'bigdecimal'
require 'bigdecimal/util'

Rational(22, 7).to_d(3)   # => 0.314e1

See also Kernel.BigDecimal.

Parameters:

• precision (Integer) (defaults to: 0)

Returns:

• (BigDecimal)

# File 'lib/bigdecimal/util.rb', line 135

def to_d(precision=0)
  BigDecimal(self, precision)
end