# 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 0.166111E-04 3.162353038787841796875 0.155702E-02 2 4 4 3.146800518035888671875 0.264868E-05 3.146800518035888671875 0.197329E-04 3 8 4 3.142894983291625976563 0.182912E-05 3.142894744873046875000 0.178181E-04 4 16 4 3.141918420791625976563 0.162050E-05 3.141918182373046875000 0.162125E-04 5 32 4 3.141674757003784179688 0.179932E-05 3.141673803329467773438 0.192225E-04 6 64 4 3.141612529754638671875 0.214577E-05 3.141613006591796875000 0.166111E-04 7 128 4 3.141597270965576171875 0.295043E-05 3.141597986221313476563 0.211559E-04 8 256 4 3.141594171524047851563 0.456348E-05 3.141593933105468750000 0.210293E-04 9 512 4 3.141592979431152343750 0.785291E-05 3.141593217849731445313 0.190586E-04 10 1024 4 3.141591548919677734375 0.144467E-04 3.141592741012573242188 0.186749E-04 11 2048 4 3.141591787338256835938 0.276379E-04 3.141592979431152343750 0.194050E-04 12 4096 4 3.141593933105468750000 0.539459E-04 3.141592502593994140625 0.194907E-04 13 8192 4 3.141591310501098632813 0.106767E-03 3.141592502593994140625 0.205003E-04 14 16384 4 3.141590595245361328125 0.212520E-03 3.141592979431152343750 0.251532E-04 15 32768 4 3.141591072082519531250 0.427462E-03 3.141592741012573242188 0.356734E-04 16 65536 4 3.141590118408203125000 0.859447E-03 3.141592502593994140625 0.935480E-03 17 131072 4 3.141554117202758789063 0.169512E-02 3.141594171524047851563 0.863746E-04 18 262144 4 3.141556262969970703125 0.339454E-02 3.141590833663940429688 0.156149E-03 19 524288 4 3.141239643096923828125 0.779189E-02 3.141571521759033203125 0.299189E-03 20 1048576 4 3.140426158905029296875 0.135577E-01 3.141662836074829101563 0.579461E-03 21 2097152 4 3.139504432678222656250 0.271106E-01 3.141595840454101562500 0.114680E-02 22 4194304 4 3.125116586685180664063 0.542217E-01 3.141397953033447265625 0.227337E-02 23 8388608 4 2.991986751556396484375 0.108595E+00 3.143488407135009765625 0.462194E-02 24 16777216 4 4.000000000000000000000 0.218439E+00 3.142450571060180664063 0.915227E-02 25 33554432 4 2.000000000000000000000 0.436006E+00 3.144632577896118164063 0.895990E-01 26 67108864 4 1.000000000000000000000 0.871796E+00 3.151786565780639648438 0.672643E-01 27 134217728 4 0.500000000000000000000 0.174507E+01 3.158061027526855468750 0.115598E+00 28 268435456 4 0.250000000000000000000 0.348977E+01 3.176691055297851562500 0.301175E+00 29 536870912 4 0.125000000000000000000 0.698978E+01 2.904921770095825195313 0.480113E+00 30 1073741824 4 0.062500000000000000000 0.139604E+02 1.500000000000000000000 0.783758E+00 31 2147483648 4 0.031250000000000000000 0.279139E+02 0.750000000000000000000 0.117252E+01 32 4294967296 4 0.015625000000000000000 0.558509E+02 0.375000000000000000000 0.307845E+01 33 8589934592 4 0.007812500000000000000 0.111701E+03 0.187500000000000000000 0.471133E+01 34 17179869184 4 0.003906250000000000000 0.223402E+03 0.093750000000000000000 0.944526E+01 35 34359738368 4 0.001953125000000000000 0.446718E+03 0.046875000000000000000 0.187102E+02