极客教程Ruby BigDecimal sin()函数
BigDecimal#sin() : sin()是BigDecimal类的一个方法，用于返回小数的正弦值，精度为指定位数的数值。
语法。BigDecimal.sin()
参数。BigDecimal的数值
返回：小数的正弦值，精度为指定位数，数值。
例子 #1 :
# Ruby code for BigDecimal.sin() method
# loading library
require 'bigdecimal'
# declaring bigdecimal
a = BigDecimal("10")
# declaring bigdecimal
b = BigDecimal("1000") *2
# declaring bigdecimal
c = BigDecimal("11.43")
# sin() method
puts "BigDecimal a sin method : #{Math.sin(a)}\n\n"
puts "BigDecimal b sin method : #{Math.sin(b)}\n\n"
puts "BigDecimal a sin method : #{Math.sin(c)}\n\n"
Ruby
输出:
BigDecimal a sin method : -0.5440211108893698
BigDecimal b sin method : 0.930039504416137
BigDecimal a sin method : -0.9071119034933154
Ruby
例子 #2 :
# Ruby code for BigDecimal.sin() 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')
# sin() method
puts "BigDecimal a sin method : #{Math.sin(a)}\n\n"
puts "BigDecimal b sin method : #{Math.sin(b)}\n\n"
puts "BigDecimal a sin method : #{Math.sin(c)}\n\n"
Ruby
输出:
BigDecimal a sin method : -0.49102159389846933
BigDecimal b sin method : 0.9772308602356717
BigDecimal a sin method : 0.1411200080598672
Ruby