Ruby | BigDecimal log() function
Last Updated :
06 Dec, 2019
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 :
require 'bigdecimal'
a = BigDecimal( "10" )
b = BigDecimal( "1000" ) * 2
c = BigDecimal( "11.43" )
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"
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Output :
BigDecimal a log method : 2.302585092994046
BigDecimal b log method : 7.600902459542082
BigDecimal a log method : 2.4362414778067194
Example #2 :
require 'bigdecimal'
a = BigDecimal( '12' )* 12
b = BigDecimal( '10' )+( 22 ** 7 . 1 ) ** 10
c = -BigDecimal( '-3' )
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"
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Output :
BigDecimal a log method : 4.969813299576001
BigDecimal b log method : 219.46401418844042
BigDecimal a log method : 1.0986122886681098
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