// PiFast, copyright 1999-2001 Xavier Gourdon *************************************** * * * User constant file definition * * * *************************************** Version : 4.0 Constant name : Pi_Machin Comments : Machin formula : pi/4 = 4*arctan(1/5)-arctan(1/239) . Number of series : 2 Series number 0 Beta : 16 Series type : 1 Z : 1/5 Series number 1 Beta : -4 Series type : 1 Z : 1/239 Approximate value : Pi_Machin = 3.14159265359