C语言常用算法源代码

				
				x=0.50    Si(x)= 0.4931074
				x=2.50    Si(x)= 1.7785202
				x=4.50    Si(x)= 1.6541404
				x=6.50    Si(x)= 1.4217943
				x=8.50    Si(x)= 1.6295971
				x=10.50    Si(x)= 1.6229407
				x=12.50    Si(x)= 1.4923370
				x=14.50    Si(x)= 1.5907229
				x=16.50    Si(x)= 1.6156262
				x=18.50    Si(x)= 1.5212824