# 26 digits of PI= 3.14159 26535 89793 23846 26433 # 32-bit PI=acos(-1)= 3.141593 # p N=2**p kind PI (seq) time (seq) PI (par) time (par) 1 2 4 3.162353038787841796875 0.109999E-04 3.162353038787841796875 0.526910E-01 2 4 4 3.146800518035888671875 0.499981E-05 3.146800518035888671875 0.800006E-05 3 8 4 3.142894983291625976563 0.500027E-05 3.142894744873046875000 0.799960E-05 4 16 4 3.141918420791625976563 0.400003E-05 3.141918182373046875000 0.699982E-05 5 32 4 3.141674757003784179688 0.500027E-05 3.141674041748046875000 0.699982E-05 6 64 4 3.141612529754638671875 0.499981E-05 3.141613006591796875000 0.800006E-05 7 128 4 3.141597270965576171875 0.500027E-05 3.141597747802734375000 0.699982E-05 8 256 4 3.141594171524047851563 0.600005E-05 3.141594171524047851563 0.800006E-05 9 512 4 3.141592979431152343750 0.899984E-05 3.141592979431152343750 0.800006E-05 10 1024 4 3.141591548919677734375 0.140001E-04 3.141592741012573242188 0.799960E-05 11 2048 4 3.141591787338256835938 0.239997E-04 3.141592741012573242188 0.899984E-05 12 4096 4 3.141593933105468750000 0.430001E-04 3.141592979431152343750 0.120001E-04 13 8192 4 3.141591310501098632813 0.819997E-04 3.141593694686889648438 0.149999E-04 14 16384 4 3.141590595245361328125 0.158000E-03 3.141592502593994140625 0.259997E-04 15 32768 4 3.141591072082519531250 0.312000E-03 3.141592502593994140625 0.440003E-04 16 65536 4 3.141590118408203125000 0.623000E-03 3.141593694686889648438 0.849999E-04 17 131072 4 3.141554117202758789063 0.123600E-02 3.141594648361206054688 0.160000E-03 18 262144 4 3.141556262969970703125 0.246800E-02 3.141588926315307617188 0.314000E-03 19 524288 4 3.141239643096923828125 0.494400E-02 3.141569137573242187500 0.624000E-03 20 1048576 4 3.140426158905029296875 0.986800E-02 3.141420602798461914063 0.124300E-02 21 2097152 4 3.139504432678222656250 0.197300E-01 3.141782999038696289063 0.247000E-02 22 4194304 4 3.125116586685180664063 0.378230E-01 3.143850326538085937500 0.312200E-02 23 8388608 4 2.991986751556396484375 0.398000E-02 3.136086702346801757813 0.000000E+00 24 16777216 4 4.000000000000000000000 0.151463E+00 3.159400939941406250000 0.000000E+00 25 33554432 4 2.000000000000000000000 0.211934E+00 3.172433614730834960938 0.395000E-01 26 67108864 4 1.000000000000000000000 0.398591E+00 3.125431060791015625000 0.751150E-01 27 134217728 4 0.500000000000000000000 0.797041E+00 3.287492513656616210938 0.127786E+00 28 268435456 4 0.250000000000000000000 0.159414E+01 2.000000000000000000000 0.243609E+00 29 536870912 4 0.125000000000000000000 0.318832E+01 1.000000000000000000000 0.446518E+00 30 1073741824 4 0.062500000000000000000 0.637665E+01 0.500000000000000000000 0.834080E+00 31 2147483648 4 0.031250000000000000000 0.127532E+02 0.250000000000000000000 0.163535E+01 32 4294967296 4 0.015625000000000000000 0.255056E+02 0.125000000000000000000 0.322177E+01 33 8589934592 4 0.007812500000000000000 0.510093E+02 0.062500000000000000000 0.639027E+01 34 17179869184 4 0.003906250000000000000 0.101991E+03 0.031250000000000000000 0.128548E+02 35 34359738368 4 0.001953125000000000000 0.204038E+03 0.015625000000000000000 0.255514E+02