diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-2.6.1/Demo/scripts/pi.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-2.6.1/Demo/scripts/pi.py Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,34 @@ +#! /usr/bin/env python + +# Print digits of pi forever. +# +# The algorithm, using Python's 'long' integers ("bignums"), works +# with continued fractions, and was conceived by Lambert Meertens. +# +# See also the ABC Programmer's Handbook, by Geurts, Meertens & Pemberton, +# published by Prentice-Hall (UK) Ltd., 1990. + +import sys + +def main(): + k, a, b, a1, b1 = 2L, 4L, 1L, 12L, 4L + while 1: + # Next approximation + p, q, k = k*k, 2L*k+1L, k+1L + a, b, a1, b1 = a1, b1, p*a+q*a1, p*b+q*b1 + # Print common digits + d, d1 = a//b, a1//b1 + while d == d1: + output(d) + a, a1 = 10L*(a%b), 10L*(a1%b1) + d, d1 = a//b, a1//b1 + +def output(d): + # Use write() to avoid spaces between the digits + # Use str() to avoid the 'L' + sys.stdout.write(str(d)) + # Flush so the output is seen immediately + sys.stdout.flush() + +if __name__ == "__main__": + main()