# 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 0.167559E-04 3.162353038787841796875 0.167066E-03 2 4 4 3.146800518035888671875 0.340911E-05 3.146800518035888671875 0.551995E-05 3 8 4 3.142894983291625976563 0.367896E-05 3.142894744873046875000 0.466895E-05 4 16 4 3.141918420791625976563 0.319211E-05 3.141918420791625976563 0.479701E-05 5 32 4 3.141674757003784179688 0.363402E-05 3.141674280166625976563 0.480306E-05 6 64 4 3.141612529754638671875 0.369805E-05 3.141613006591796875000 0.487920E-05 7 128 4 3.141597270965576171875 0.455789E-05 3.141597986221313476563 0.483403E-05 8 256 4 3.141594171524047851563 0.581006E-05 3.141593933105468750000 0.663195E-05 9 512 4 3.141592979431152343750 0.895397E-05 3.141592979431152343750 0.655395E-05 10 1024 4 3.141591548919677734375 0.147389E-04 3.141592502593994140625 0.964897E-05 11 2048 4 3.141591787338256835938 0.260901E-04 3.141592264175415039063 0.153391E-04 12 4096 4 3.141593933105468750000 0.490542E-04 3.141592741012573242188 0.300359E-04 13 8192 4 3.141591310501098632813 0.947670E-04 3.141592264175415039063 0.578500E-04 14 16384 4 3.141590595245361328125 0.195694E-03 3.141592979431152343750 0.112568E-03 15 32768 4 3.141591072082519531250 0.369320E-03 3.141592979431152343750 0.184427E-03 16 65536 4 3.141590118408203125000 0.764868E-03 3.141593456268310546875 0.391581E-03 17 131072 4 3.141554117202758789063 0.148136E-02 3.141596317291259765625 0.811413E-03 18 262144 4 3.141556262969970703125 0.298337E-02 3.141582489013671875000 0.161297E-02 19 524288 4 3.141239643096923828125 0.605661E-02 3.141627788543701171875 0.314230E-02 20 1048576 4 3.140426158905029296875 0.120057E-01 3.141475200653076171875 0.598166E-02 21 2097152 4 3.139504432678222656250 0.240820E-01 3.140707969665527343750 0.125809E-01 22 4194304 4 3.125116586685180664063 0.478642E-01 3.144064188003540039063 0.244064E-01 23 8388608 4 2.991986751556396484375 0.963498E-01 3.154937744140625000000 0.489132E-01 24 16777216 4 4.000000000000000000000 0.192055E+00 3.151985883712768554688 0.974968E-01 25 33554432 4 2.000000000000000000000 0.383565E+00 3.189925193786621093750 0.192488E+00 26 67108864 4 1.000000000000000000000 0.809985E+00 3.209477424621582031250 0.381352E+00 27 134217728 4 0.500000000000000000000 0.168728E+01 2.000000000000000000000 0.767161E+00 28 268435456 4 0.250000000000000000000 0.344232E+01 1.000000000000000000000 0.155081E+01 29 536870912 4 0.125000000000000000000 0.694394E+01 0.500000000000000000000 0.308428E+01 30 1073741824 4 0.062500000000000000000 0.139628E+02 0.250000000000000000000 0.616754E+01 31 2147483648 4 0.031250000000000000000 0.279805E+02 0.125000000000000000000 0.123287E+02 32 4294967296 4 0.015625000000000000000 0.560201E+02 0.062500000000000000000 0.246936E+02 33 8589934592 4 0.007812500000000000000 0.112099E+03 0.031250000000000000000 0.492785E+02 34 17179869184 4 0.003906250000000000000 0.224374E+03 0.015625000000000000000 0.989176E+02 35 34359738368 4 0.001953125000000000000 0.448651E+03 0.007812500000000000000 0.196564E+03