# 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 0.164127E-03 2 4 4 3.146800518035888671875 0.334997E-05 3.146800518035888671875 0.566593E-05 3 8 4 3.142894983291625976563 0.380981E-05 3.142894744873046875000 0.547199E-05 4 16 4 3.141918420791625976563 0.328687E-05 3.141918420791625976563 0.478909E-05 5 32 4 3.141674757003784179688 0.367709E-05 3.141674041748046875000 0.486500E-05 6 64 4 3.141612529754638671875 0.514695E-05 3.141613006591796875000 0.566500E-05 7 128 4 3.141597270965576171875 0.472995E-05 3.141597747802734375000 0.508712E-05 8 256 4 3.141594171524047851563 0.586198E-05 3.141593933105468750000 0.630692E-05 9 512 4 3.141592979431152343750 0.894000E-05 3.141592979431152343750 0.682892E-05 10 1024 4 3.141591548919677734375 0.146839E-04 3.141592502593994140625 0.202961E-04 11 2048 4 3.141591787338256835938 0.260528E-04 3.141592264175415039063 0.171971E-04 12 4096 4 3.141593933105468750000 0.604112E-04 3.141592502593994140625 0.318619E-04 13 8192 4 3.141591310501098632813 0.100769E-03 3.141592264175415039063 0.489380E-04 14 16384 4 3.141590595245361328125 0.198021E-03 3.141592979431152343750 0.918130E-04 15 32768 4 3.141591072082519531250 0.371575E-03 3.141592502593994140625 0.187303E-03 16 65536 4 3.141590118408203125000 0.739105E-03 3.141593456268310546875 0.436168E-03 17 131072 4 3.141554117202758789063 0.148457E-02 3.141596794128417968750 0.843387E-03 18 262144 4 3.141556262969970703125 0.302285E-02 3.141582489013671875000 0.156477E-02 19 524288 4 3.141239643096923828125 0.603353E-02 3.141627788543701171875 0.326781E-02 20 1048576 4 3.140426158905029296875 0.120095E-01 3.141475200653076171875 0.609471E-02 21 2097152 4 3.139504432678222656250 0.239737E-01 3.140707969665527343750 0.119568E-01 22 4194304 4 3.125116586685180664063 0.479966E-01 3.144064188003540039063 0.237836E-01 23 8388608 4 2.991986751556396484375 0.955044E-01 3.154937744140625000000 0.480868E-01 24 16777216 4 4.000000000000000000000 0.190969E+00 3.151985883712768554688 0.968010E-01 25 33554432 4 2.000000000000000000000 0.382690E+00 3.189925193786621093750 0.193176E+00 26 67108864 4 1.000000000000000000000 0.802964E+00 3.209477424621582031250 0.384206E+00 27 134217728 4 0.500000000000000000000 0.168034E+01 2.000000000000000000000 0.774010E+00 28 268435456 4 0.250000000000000000000 0.344066E+01 1.000000000000000000000 0.154267E+01 29 536870912 4 0.125000000000000000000 0.694553E+01 0.500000000000000000000 0.309071E+01 30 1073741824 4 0.062500000000000000000 0.139513E+02 0.250000000000000000000 0.620796E+01 31 2147483648 4 0.031250000000000000000 0.279647E+02 0.125000000000000000000 0.123634E+02 32 4294967296 4 0.015625000000000000000 0.560037E+02 0.062500000000000000000 0.248375E+02 33 8589934592 4 0.007812500000000000000 0.112082E+03 0.031250000000000000000 0.496961E+02 34 17179869184 4 0.003906250000000000000 0.224240E+03 0.015625000000000000000 0.990206E+02 35 34359738368 4 0.001953125000000000000 0.448557E+03 0.007812500000000000000 0.198318E+03