# 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 0.166690E-04 3.162353038787841796875 0.173675E-03 2 4 4 3.146800518035888671875 0.356394E-05 3.146800518035888671875 0.165391E-04 3 8 4 3.142894983291625976563 0.383402E-05 3.142894744873046875000 0.461191E-05 4 16 4 3.141918420791625976563 0.321190E-05 3.141918420791625976563 0.463310E-05 5 32 4 3.141674757003784179688 0.362517E-05 3.141674041748046875000 0.581518E-05 6 64 4 3.141612529754638671875 0.383495E-05 3.141613006591796875000 0.140110E-04 7 128 4 3.141597270965576171875 0.460981E-05 3.141597747802734375000 0.475999E-05 8 256 4 3.141594171524047851563 0.616000E-05 3.141593933105468750000 0.585895E-05 9 512 4 3.141592979431152343750 0.898493E-05 3.141592979431152343750 0.702403E-05 10 1024 4 3.141591548919677734375 0.146891E-04 3.141592502593994140625 0.111971E-04 11 2048 4 3.141591787338256835938 0.262610E-04 3.141592264175415039063 0.173040E-04 12 4096 4 3.141593933105468750000 0.490430E-04 3.141592502593994140625 0.316761E-04 13 8192 4 3.141591310501098632813 0.949299E-04 3.141592264175415039063 0.488060E-04 14 16384 4 3.141590595245361328125 0.186247E-03 3.141592741012573242188 0.950950E-04 15 32768 4 3.141591072082519531250 0.386071E-03 3.141592979431152343750 0.223655E-03 16 65536 4 3.141590118408203125000 0.817715E-03 3.141593456268310546875 0.443567E-03 17 131072 4 3.141554117202758789063 0.151025E-02 3.141596794128417968750 0.874047E-03 18 262144 4 3.141556262969970703125 0.303615E-02 3.141582489013671875000 0.160958E-02 19 524288 4 3.141239643096923828125 0.596034E-02 3.141627788543701171875 0.314103E-02 20 1048576 4 3.140426158905029296875 0.119818E-01 3.141475200653076171875 0.604299E-02 21 2097152 4 3.139504432678222656250 0.239611E-01 3.140707969665527343750 0.124433E-01 22 4194304 4 3.125116586685180664063 0.480251E-01 3.144064188003540039063 0.240832E-01 23 8388608 4 2.991986751556396484375 0.956701E-01 3.154937744140625000000 0.483516E-01 24 16777216 4 4.000000000000000000000 0.188549E+00 3.151985883712768554688 0.976448E-01 25 33554432 4 2.000000000000000000000 0.382751E+00 3.189924955368041992188 0.193601E+00 26 67108864 4 1.000000000000000000000 0.805971E+00 3.209477424621582031250 0.384714E+00 27 134217728 4 0.500000000000000000000 0.168326E+01 2.000000000000000000000 0.767672E+00 28 268435456 4 0.250000000000000000000 0.344041E+01 1.000000000000000000000 0.153608E+01 29 536870912 4 0.125000000000000000000 0.694429E+01 0.500000000000000000000 0.306730E+01 30 1073741824 4 0.062500000000000000000 0.139617E+02 0.250000000000000000000 0.613648E+01 31 2147483648 4 0.031250000000000000000 0.279725E+02 0.125000000000000000000 0.122608E+02 32 4294967296 4 0.015625000000000000000 0.560106E+02 0.062500000000000000000 0.245870E+02 33 8589934592 4 0.007812500000000000000 0.112115E+03 0.031250000000000000000 0.492693E+02 34 17179869184 4 0.003906250000000000000 0.224231E+03 0.015625000000000000000 0.992344E+02 35 34359738368 4 0.001953125000000000000 0.448532E+03 0.007812500000000000000 0.197381E+03