On Thu, 20 Apr 2006, YAP wrote:

> What is 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF (128 bits) in decimal?  How go a
> head an calculate big numbers like this.

plp@plp:~$ bc -l
bc 1.06
Copyright 1991-1994, 1997, 1998, 2000 Free Software Foundation, Inc.
This is free software with ABSOLUTELY NO WARRANTY.
For details type `warranty'. 
ibase=16
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
340282366920938463463374607431768211455
scale=30
4*a(1)
3.141592653589793238462643383276
scale=300
4*a(1)
3.141592653589793238462643383279502884197169399375105820974944592307\
81640628620899862803482534211706798214808651328230664709384460955058\
22317253594081284811174502841027019385211055596446229489549303819644\
28810975665933446128475648233786783165271201909145648566923460348610\
454326648213393607260249141272
plp@plp:~$ exit

---
Note: a(1) = arctg(1)

Peter
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