# 26 digits of PI= 3.14159 26535 89793 23846 26433 # 32-bit PI=acos(-1)= 3.1415927 # p N=2**p kind PI (seq) time (seq) PI (par) time (par) 1 2 4 3.162353038787841796875 0.171079E-04 3.162353038787841796875 0.174738E-03 2 4 4 3.146800518035888671875 0.348501E-05 3.146800518035888671875 0.547012E-05 3 8 4 3.142894983291625976563 0.392692E-05 3.142894744873046875000 0.562007E-05 4 16 4 3.141918420791625976563 0.362494E-05 3.141918420791625976563 0.492018E-05 5 32 4 3.141674757003784179688 0.358513E-05 3.141674280166625976563 0.463403E-05 6 64 4 3.141612529754638671875 0.378001E-05 3.141613006591796875000 0.478397E-05 7 128 4 3.141597270965576171875 0.460492E-05 3.141597986221313476563 0.477885E-05 8 256 4 3.141594171524047851563 0.592205E-05 3.141593933105468750000 0.584894E-05 9 512 4 3.141592979431152343750 0.910601E-05 3.141592979431152343750 0.649993E-05 10 1024 4 3.141591548919677734375 0.147040E-04 3.141592502593994140625 0.105840E-04 11 2048 4 3.141591787338256835938 0.262600E-04 3.141592264175415039063 0.171710E-04 12 4096 4 3.141593933105468750000 0.487939E-04 3.141592741012573242188 0.312352E-04 13 8192 4 3.141591310501098632813 0.970641E-04 3.141592264175415039063 0.591751E-04 14 16384 4 3.141590595245361328125 0.196311E-03 3.141592741012573242188 0.112003E-03 15 32768 4 3.141591072082519531250 0.369328E-03 3.141592741012573242188 0.216377E-03 16 65536 4 3.141590118408203125000 0.763496E-03 3.141593456268310546875 0.390364E-03 17 131072 4 3.141554117202758789063 0.149161E-02 3.141596317291259765625 0.813071E-03 18 262144 4 3.141556262969970703125 0.298745E-02 3.141582489013671875000 0.152102E-02 19 524288 4 3.141239643096923828125 0.596600E-02 3.141627788543701171875 0.298198E-02 20 1048576 4 3.140426158905029296875 0.119335E-01 3.141475200653076171875 0.638254E-02 21 2097152 4 3.139504432678222656250 0.241463E-01 3.140707969665527343750 0.119729E-01 22 4194304 4 3.125116586685180664063 0.477728E-01 3.144064188003540039063 0.240053E-01 23 8388608 4 2.991986751556396484375 0.954498E-01 3.154937744140625000000 0.484818E-01 24 16777216 4 4.000000000000000000000 0.191914E+00 3.151985883712768554688 0.954332E-01 25 33554432 4 2.000000000000000000000 0.385131E+00 3.189924955368041992188 0.192794E+00 26 67108864 4 1.000000000000000000000 0.807169E+00 3.209477424621582031250 0.388426E+00 27 134217728 4 0.500000000000000000000 0.169066E+01 2.000000000000000000000 0.775202E+00 28 268435456 4 0.250000000000000000000 0.344546E+01 1.000000000000000000000 0.177232E+01 29 536870912 4 0.125000000000000000000 0.694618E+01 0.500000000000000000000 0.313981E+01 30 1073741824 4 0.062500000000000000000 0.139677E+02 0.250000000000000000000 0.615602E+01 31 2147483648 4 0.031250000000000000000 0.279805E+02 0.125000000000000000000 0.123427E+02 32 4294967296 4 0.015625000000000000000 0.561007E+02 0.062500000000000000000 0.246626E+02 33 8589934592 4 0.007812500000000000000 0.112095E+03 0.031250000000000000000 0.492738E+02 34 17179869184 4 0.003906250000000000000 0.224268E+03 0.015625000000000000000 0.985339E+02 35 34359738368 4 0.001953125000000000000 0.448520E+03 0.007812500000000000000 0.197658E+03