红宝石 | BigDecimal sqrt()函数
BigDecimal#sqrt() : sqrt()是一个 BigDecimal 类方法,它返回值的平方根。
Syntax: BigDecimal.sqrt()
Parameter: BigDecimal values
Return: the square root of the value.
示例 #1:
# Ruby code for BigDecimal.sqrt() method
# loading library
require 'bigdecimal'
# declaring bigdecimal
a = BigDecimal("10")
# declaring bigdecimal
b = BigDecimal("1000") *2
# declaring bigdecimal
c = BigDecimal("11.43")
# sqrt() method
puts "BigDecimal a sqrt method : #{Math.sqrt(a)}\n\n"
puts "BigDecimal b sqrt method : #{Math.sqrt(b)}\n\n"
puts "BigDecimal a sqrt method : #{Math.sqrt(c)}\n\n"
输出 :
BigDecimal a sqrt method : 3.1622776601683795
BigDecimal b sqrt method : 44.721359549995796
BigDecimal a sqrt method : 3.380828300875393
示例 #2:
# Ruby code for BigDecimal.sqrt() 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')
# sqrt() method
puts "BigDecimal a sqrt method : #{Math.sqrt(a)}\n\n"
puts "BigDecimal b sqrt method : #{Math.sqrt(b)}\n\n"
puts "BigDecimal a sqrt method : #{Math.sqrt(c)}\n\n"
输出 :
BigDecimal a sqrt method : 12.0
BigDecimal b sqrt method : 4.5290297054731975e+47
BigDecimal a sqrt method : 1.7320508075688772