# 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 0.168860E-04 3.162353038787841796875 0.183034E-03 2 4 4 3.146800518035888671875 0.353996E-05 3.146800518035888671875 0.573206E-05 3 8 4 3.142894983291625976563 0.349991E-05 3.142894744873046875000 0.499189E-05 4 16 4 3.141918420791625976563 0.345497E-05 3.141918182373046875000 0.246149E-04 5 32 4 3.141674757003784179688 0.352017E-05 3.141674280166625976563 0.529410E-05 6 64 4 3.141612529754638671875 0.385684E-05 3.141613006591796875000 0.528502E-05 7 128 4 3.141597270965576171875 0.454416E-05 3.141597986221313476563 0.524987E-05 8 256 4 3.141594171524047851563 0.616699E-05 3.141593933105468750000 0.556698E-05 9 512 4 3.141592979431152343750 0.875699E-05 3.141592979431152343750 0.728504E-05 10 1024 4 3.141591548919677734375 0.147989E-04 3.141592502593994140625 0.107612E-04 11 2048 4 3.141591787338256835938 0.263050E-04 3.141592264175415039063 0.150891E-04 12 4096 4 3.141593933105468750000 0.490928E-04 3.141592502593994140625 0.258929E-04 13 8192 4 3.141591310501098632813 0.948680E-04 3.141592264175415039063 0.588349E-04 14 16384 4 3.141590595245361328125 0.186358E-03 3.141592979431152343750 0.112651E-03 15 32768 4 3.141591072082519531250 0.378659E-03 3.141592979431152343750 0.223657E-03 16 65536 4 3.141590118408203125000 0.781047E-03 3.141593456268310546875 0.443849E-03 17 131072 4 3.141554117202758789063 0.149163E-02 3.141596555709838867188 0.715256E-03 18 262144 4 3.141556262969970703125 0.306444E-02 3.141582489013671875000 0.145099E-02 19 524288 4 3.141239643096923828125 0.592039E-02 3.141627788543701171875 0.315678E-02 20 1048576 4 3.140426158905029296875 0.119479E-01 3.141475200653076171875 0.617284E-02 21 2097152 4 3.139504432678222656250 0.239224E-01 3.140707969665527343750 0.124388E-01 22 4194304 4 3.125116586685180664063 0.478618E-01 3.144063949584960937500 0.240875E-01 23 8388608 4 2.991986751556396484375 0.959767E-01 3.154937744140625000000 0.479533E-01 24 16777216 4 4.000000000000000000000 0.191541E+00 3.151985883712768554688 0.960296E-01 25 33554432 4 2.000000000000000000000 0.383557E+00 3.189924955368041992188 0.193193E+00 26 67108864 4 1.000000000000000000000 0.812562E+00 3.209477424621582031250 0.383295E+00 27 134217728 4 0.500000000000000000000 0.168895E+01 2.000000000000000000000 0.769549E+00 28 268435456 4 0.250000000000000000000 0.344104E+01 1.000000000000000000000 0.154611E+01 29 536870912 4 0.125000000000000000000 0.694023E+01 0.500000000000000000000 0.308255E+01 30 1073741824 4 0.062500000000000000000 0.139572E+02 0.250000000000000000000 0.616423E+01 31 2147483648 4 0.031250000000000000000 0.279733E+02 0.125000000000000000000 0.122581E+02 32 4294967296 4 0.015625000000000000000 0.560087E+02 0.062500000000000000000 0.245928E+02 33 8589934592 4 0.007812500000000000000 0.112085E+03 0.031250000000000000000 0.491385E+02 34 17179869184 4 0.003906250000000000000 0.224259E+03 0.015625000000000000000 0.982104E+02 35 34359738368 4 0.001953125000000000000 0.448556E+03 0.007812500000000000000 0.196928E+03