# 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 0.106151E-04 3.162353038787841796875 0.183806E-03 2 4 4 3.146800518035888671875 0.335299E-05 3.146800518035888671875 0.726199E-05 3 8 4 3.142894983291625976563 0.335195E-05 3.142894744873046875000 0.586698E-05 4 16 4 3.141918420791625976563 0.307197E-05 3.141918182373046875000 0.614603E-05 5 32 4 3.141674757003784179688 0.335195E-05 3.141674041748046875000 0.530796E-05 6 64 4 3.141612529754638671875 0.363099E-05 3.141613006591796875000 0.530807E-05 7 128 4 3.141597270965576171875 0.446907E-05 3.141597986221313476563 0.586594E-05 8 256 4 3.141594171524047851563 0.670506E-05 3.141593933105468750000 0.838004E-05 9 512 4 3.141592979431152343750 0.921800E-05 3.141592979431152343750 0.642496E-05 10 1024 4 3.141591548919677734375 0.150839E-04 3.141592502593994140625 0.810099E-05 11 2048 4 3.141591787338256835938 0.279340E-04 3.141592264175415039063 0.198330E-04 12 4096 4 3.141593933105468750000 0.530750E-04 3.141592502593994140625 0.175990E-04 13 8192 4 3.141591310501098632813 0.115368E-03 3.141592264175415039063 0.421810E-04 14 16384 4 3.141590595245361328125 0.203640E-03 3.141592979431152343750 0.555890E-04 15 32768 4 3.141591072082519531250 0.404487E-03 3.141592741012573242188 0.113691E-03 16 65536 4 3.141590118408203125000 0.819868E-03 3.141593456268310546875 0.220400E-03 17 131072 4 3.141554117202758789063 0.162381E-02 3.141596555709838867188 0.417337E-03 18 262144 4 3.141556262969970703125 0.324511E-02 3.141582489013671875000 0.965404E-03 19 524288 4 3.141239643096923828125 0.647598E-02 3.141627788543701171875 0.162716E-02 20 1048576 4 3.140426158905029296875 0.139632E-01 3.141474962234497070313 0.324651E-02 21 2097152 4 3.139504432678222656250 0.259148E-01 3.140707969665527343750 0.649609E-02 22 4194304 4 3.125116586685180664063 0.518427E-01 3.144063949584960937500 0.130310E-01 23 8388608 4 2.991986751556396484375 0.103732E+00 3.154937744140625000000 0.269431E-01 24 16777216 4 4.000000000000000000000 0.208541E+00 3.151985883712768554688 0.529760E-01 25 33554432 4 2.000000000000000000000 0.416133E+00 3.189924955368041992188 0.218484E+00 26 67108864 4 1.000000000000000000000 0.833354E+00 3.209477424621582031250 0.208713E+00 27 134217728 4 0.500000000000000000000 0.166632E+01 2.000000000000000000000 0.567385E+00 28 268435456 4 0.250000000000000000000 0.333144E+01 1.000000000000000000000 0.834932E+00 29 536870912 4 0.125000000000000000000 0.666172E+01 0.500000000000000000000 0.166799E+01 30 1073741824 4 0.062500000000000000000 0.133241E+02 0.250000000000000000000 0.336573E+01 31 2147483648 4 0.031250000000000000000 0.266493E+02 0.125000000000000000000 0.668276E+01 32 4294967296 4 0.015625000000000000000 0.532983E+02 0.062500000000000000000 0.133651E+02 33 8589934592 4 0.007812500000000000000 0.106573E+03 0.031250000000000000000 0.267498E+02 34 17179869184 4 0.003906250000000000000 0.213188E+03 0.015625000000000000000 0.534706E+02 35 34359738368 4 0.001953125000000000000 0.426364E+03 0.007812500000000000000 0.106877E+03