# 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 0.100001E-04 3.162353038787841796875 0.158050E-01 2 4 4 3.146800518035888671875 0.499981E-05 3.146800518035888671875 0.800006E-05 3 8 4 3.142894983291625976563 0.500027E-05 3.142894983291625976563 0.700029E-05 4 16 4 3.141918420791625976563 0.400003E-05 3.141917943954467773438 0.699982E-05 5 32 4 3.141674757003784179688 0.400003E-05 3.141674041748046875000 0.600005E-05 6 64 4 3.141612529754638671875 0.500027E-05 3.141613006591796875000 0.600005E-05 7 128 4 3.141597270965576171875 0.599958E-05 3.141597747802734375000 0.699982E-05 8 256 4 3.141594171524047851563 0.599958E-05 3.141593694686889648438 0.700029E-05 9 512 4 3.141592979431152343750 0.899984E-05 3.141592741012573242188 0.699982E-05 10 1024 4 3.141591548919677734375 0.140001E-04 3.141592741012573242188 0.800006E-05 11 2048 4 3.141591787338256835938 0.229999E-04 3.141592979431152343750 0.800006E-05 12 4096 4 3.141593933105468750000 0.419999E-04 3.141592979431152343750 0.120001E-04 13 8192 4 3.141591310501098632813 0.810004E-04 3.141593694686889648438 0.159997E-04 14 16384 4 3.141590595245361328125 0.158000E-03 3.141592741012573242188 0.250000E-04 15 32768 4 3.141591072082519531250 0.312000E-03 3.141592741012573242188 0.450001E-04 16 65536 4 3.141590118408203125000 0.620000E-03 3.141593694686889648438 0.829999E-04 17 131072 4 3.141554117202758789063 0.123600E-02 3.141594648361206054688 0.160000E-03 18 262144 4 3.141556262969970703125 0.246800E-02 3.141589164733886718750 0.314000E-03 19 524288 4 3.141239643096923828125 0.494600E-02 3.141569137573242187500 0.624000E-03 20 1048576 4 3.140426158905029296875 0.987100E-02 3.141420602798461914063 0.123900E-02 21 2097152 4 3.139504432678222656250 0.197540E-01 3.141782999038696289063 0.247000E-02 22 4194304 4 3.125116586685180664063 0.378370E-01 3.143849849700927734375 0.311800E-02 23 8388608 4 2.991986751556396484375 0.498240E-01 3.136086463928222656250 0.623700E-02 24 16777216 4 4.000000000000000000000 0.996530E-01 3.159400939941406250000 0.124610E-01 25 33554432 4 2.000000000000000000000 0.185793E+00 3.172434091567993164063 0.000000E+00 26 67108864 4 1.000000000000000000000 0.451592E+00 3.125430822372436523438 0.750710E-01 27 134217728 4 0.500000000000000000000 0.797129E+00 3.287492513656616210938 0.127759E+00 28 268435456 4 0.250000000000000000000 0.156546E+01 2.000000000000000000000 0.273058E+00 29 536870912 4 0.125000000000000000000 0.318836E+01 1.000000000000000000000 0.446637E+00 30 1073741824 4 0.062500000000000000000 0.637689E+01 0.500000000000000000000 0.699185E+00 31 2147483648 4 0.031250000000000000000 0.128955E+02 0.250000000000000000000 0.163486E+01 32 4294967296 4 0.015625000000000000000 0.254831E+02 0.125000000000000000000 0.324236E+01 33 8589934592 4 0.007812500000000000000 0.510137E+02 0.062500000000000000000 0.641354E+01 34 17179869184 4 0.003906250000000000000 0.102029E+03 0.031250000000000000000 0.128038E+02 35 34359738368 4 0.001953125000000000000 0.204111E+03 0.015625000000000000000 0.253749E+02