Pure Programmer
Blue Matrix

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Project: Compute π

Write a program that computes and prints the value π which can be easily computed with standard math functions using one of the formula:

  • atan(1.0)*4.0
  • atan2(0.0, -1.0)
  • acos(-1.0)
  • 2.0*acos(0.0)

Which formula produces an answer closer to the standard math definition of π?

See [[Pi]]

Output
$ javac -Xlint ComputePi1.java $ java -ea ComputePi1 pi1: 3.141592653589793 abs(pi1 - π): 0.0000000000e+00 pi2: 3.141592653589793 abs(pi2 - π): 0.0000000000e+00 pi3: 3.141592653589793 abs(pi3 - π): 0.0000000000e+00 pi4: 3.141592653589793 abs(pi4 - π): 0.0000000000e+00

Solution