# 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 0.167659E-04 3.162353038787841796875 0.181073E-03 2 4 4 3.146800518035888671875 0.360189E-05 3.146800518035888671875 0.721985E-05 3 8 4 3.142894983291625976563 0.371505E-05 3.142894744873046875000 0.515603E-05 4 16 4 3.141918420791625976563 0.348897E-05 3.141918182373046875000 0.486709E-05 5 32 4 3.141674757003784179688 0.341702E-05 3.141674280166625976563 0.472995E-05 6 64 4 3.141612529754638671875 0.373181E-05 3.141613006591796875000 0.503683E-05 7 128 4 3.141597270965576171875 0.449293E-05 3.141597747802734375000 0.525895E-05 8 256 4 3.141594171524047851563 0.586896E-05 3.141593933105468750000 0.604382E-05 9 512 4 3.141592979431152343750 0.896491E-05 3.141592979431152343750 0.724103E-05 10 1024 4 3.141591548919677734375 0.146690E-04 3.141592502593994140625 0.974908E-05 11 2048 4 3.141591787338256835938 0.261250E-04 3.141592264175415039063 0.171962E-04 12 4096 4 3.141593933105468750000 0.489790E-04 3.141592741012573242188 0.310380E-04 13 8192 4 3.141591310501098632813 0.945551E-04 3.141592264175415039063 0.587478E-04 14 16384 4 3.141590595245361328125 0.188292E-03 3.141592979431152343750 0.110506E-03 15 32768 4 3.141591072082519531250 0.378236E-03 3.141592741012573242188 0.223725E-03 16 65536 4 3.141590118408203125000 0.767049E-03 3.141593456268310546875 0.376282E-03 17 131072 4 3.141554117202758789063 0.149178E-02 3.141596794128417968750 0.870260E-03 18 262144 4 3.141556262969970703125 0.304331E-02 3.141582489013671875000 0.167150E-02 19 524288 4 3.141239643096923828125 0.602673E-02 3.141627788543701171875 0.302362E-02 20 1048576 4 3.140426158905029296875 0.119931E-01 3.141474962234497070313 0.609947E-02 21 2097152 4 3.139504432678222656250 0.239125E-01 3.140708446502685546875 0.120374E-01 22 4194304 4 3.125116586685180664063 0.480817E-01 3.144064188003540039063 0.245790E-01 23 8388608 4 2.991986751556396484375 0.958098E-01 3.154937744140625000000 0.488031E-01 24 16777216 4 4.000000000000000000000 0.190652E+00 3.151985883712768554688 0.962052E-01 25 33554432 4 2.000000000000000000000 0.381837E+00 3.189925193786621093750 0.191128E+00 26 67108864 4 1.000000000000000000000 0.817906E+00 3.209477424621582031250 0.447332E+00 27 134217728 4 0.500000000000000000000 0.169061E+01 2.000000000000000000000 0.774798E+00 28 268435456 4 0.250000000000000000000 0.343924E+01 1.000000000000000000000 0.153638E+01 29 536870912 4 0.125000000000000000000 0.695397E+01 0.500000000000000000000 0.309149E+01 30 1073741824 4 0.062500000000000000000 0.139743E+02 0.250000000000000000000 0.616891E+01 31 2147483648 4 0.031250000000000000000 0.279773E+02 0.125000000000000000000 0.123231E+02 32 4294967296 4 0.015625000000000000000 0.560171E+02 0.062500000000000000000 0.247678E+02 33 8589934592 4 0.007812500000000000000 0.112101E+03 0.031250000000000000000 0.494360E+02 34 17179869184 4 0.003906250000000000000 0.224259E+03 0.015625000000000000000 0.987130E+02 35 34359738368 4 0.001953125000000000000 0.448511E+03 0.007812500000000000000 0.198083E+03