Ruby | BigDecimal log() function

BigDecimal#log() : log() is a BigDecimal class method which returns the natural logarithm of decimal to the specified number of digits of precision, numeric.

Syntax: BigDecimal.log()

Parameter: BigDecimal values

Return: the natural logarithm of decimal to the specified number of digits of precision, numeric.

Example #1 :

# Ruby code for BigDecimal.log() method

# loading library
require 'bigdecimal'

# declaring bigdecimal
a = BigDecimal("10")

# declaring bigdecimal
b = BigDecimal("1000") *2

# declaring bigdecimal
c = BigDecimal("11.43")

# log() method
puts "BigDecimal a log method : #{Math.log(a)}\n\n"

puts "BigDecimal b log method : #{Math.log(b)}\n\n"

puts "BigDecimal a log method : #{Math.log(c)}\n\n"

Output :

BigDecimal a log method : 2.302585092994046

BigDecimal b log method : 7.600902459542082

BigDecimal a log method : 2.4362414778067194

Example #2 :

# Ruby code for BigDecimal.log() method

# loading library
require 'bigdecimal'

# declaring bigdecimal
a = BigDecimal('12')*12

# declaring bigdecimal
b = BigDecimal('10')+(22 ** 7.1) ** 10

# declaring bigdecimal
c = -BigDecimal('-3')

# log() method
puts "BigDecimal a log method : #{Math.log(a)}\n\n"

puts "BigDecimal b log method : #{Math.log(b)}\n\n"

puts "BigDecimal a log method : #{Math.log(c)}\n\n"

Output :

BigDecimal a log method : 4.969813299576001

BigDecimal b log method : 219.46401418844042

BigDecimal a log method : 1.0986122886681098