# 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 0.174241E-04 3.162353038787841796875 0.175102E-03 2 4 4 3.146800518035888671875 0.379211E-05 3.146800518035888671875 0.560703E-05 3 8 4 3.142894983291625976563 0.347290E-05 3.142894744873046875000 0.509690E-05 4 16 4 3.141918420791625976563 0.327220E-05 3.141918182373046875000 0.517187E-05 5 32 4 3.141674757003784179688 0.343821E-05 3.141674041748046875000 0.523706E-05 6 64 4 3.141612529754638671875 0.137610E-04 3.141613006591796875000 0.551390E-05 7 128 4 3.141597270965576171875 0.499189E-05 3.141597986221313476563 0.533415E-05 8 256 4 3.141594171524047851563 0.585383E-05 3.141593933105468750000 0.586896E-05 9 512 4 3.141592979431152343750 0.918703E-05 3.141592979431152343750 0.787410E-05 10 1024 4 3.141591548919677734375 0.146858E-04 3.141592502593994140625 0.972394E-05 11 2048 4 3.141591787338256835938 0.263851E-04 3.141592264175415039063 0.176711E-04 12 4096 4 3.141593933105468750000 0.490260E-04 3.141592741012573242188 0.306228E-04 13 8192 4 3.141591310501098632813 0.948349E-04 3.141592264175415039063 0.483540E-04 14 16384 4 3.141590595245361328125 0.185930E-03 3.141592979431152343750 0.112216E-03 15 32768 4 3.141591072082519531250 0.384995E-03 3.141592979431152343750 0.184157E-03 16 65536 4 3.141590118408203125000 0.745585E-03 3.141593456268310546875 0.354664E-03 17 131072 4 3.141554117202758789063 0.152454E-02 3.141596317291259765625 0.850522E-03 18 262144 4 3.141556262969970703125 0.298751E-02 3.141582489013671875000 0.160523E-02 19 524288 4 3.141239643096923828125 0.607477E-02 3.141627788543701171875 0.317865E-02 20 1048576 4 3.140426158905029296875 0.119991E-01 3.141475200653076171875 0.586301E-02 21 2097152 4 3.139504432678222656250 0.240271E-01 3.140707969665527343750 0.120633E-01 22 4194304 4 3.125116586685180664063 0.474812E-01 3.144064188003540039063 0.244060E-01 23 8388608 4 2.991986751556396484375 0.957928E-01 3.154937744140625000000 0.480779E-01 24 16777216 4 4.000000000000000000000 0.190644E+00 3.151985883712768554688 0.948297E-01 25 33554432 4 2.000000000000000000000 0.384322E+00 3.189924955368041992188 0.193305E+00 26 67108864 4 1.000000000000000000000 0.807352E+00 3.209477424621582031250 0.384949E+00 27 134217728 4 0.500000000000000000000 0.169085E+01 2.000000000000000000000 0.769220E+00 28 268435456 4 0.250000000000000000000 0.343859E+01 1.000000000000000000000 0.153581E+01 29 536870912 4 0.125000000000000000000 0.694797E+01 0.500000000000000000000 0.308640E+01 30 1073741824 4 0.062500000000000000000 0.139576E+02 0.250000000000000000000 0.617807E+01 31 2147483648 4 0.031250000000000000000 0.279825E+02 0.125000000000000000000 0.123351E+02 32 4294967296 4 0.015625000000000000000 0.560183E+02 0.062500000000000000000 0.246048E+02 33 8589934592 4 0.007812500000000000000 0.112105E+03 0.031250000000000000000 0.492185E+02 34 17179869184 4 0.003906250000000000000 0.224273E+03 0.015625000000000000000 0.984900E+02 35 34359738368 4 0.001953125000000000000 0.448888E+03 0.007812500000000000000 0.196896E+03