Bellard Pi

Paglalarawan ng Bellard Pi

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Fabrice Bellard - French programmer, author of several well-known projects in the field of free software.
In 1997, Bellard opened fastest formula to calculate a single digit of pi in binary - so-called formula of Bellary, which is a modification of the formula Bailey-Borwein-Pluffa.
December 31, 2009 Bellard announced the establishment of their new world record in the calculation of pi: received 2 699 999 990 000 decimal places. The calculations were performed on a personal computer for less than € 2,000 and took 103 days. Checking the last 50 hexadecimal characters result using the formula Bellard took 13 days.
http://ru.wikipedia.org/wiki/Беллар
, _Fabris
Bellard formula allows us to calculate n-th digit of the binary representation. This is a quick version (about 43% faster) formula Bailey-Borwein-Pluffa
http://ru.wikipedia.org/wiki/Формула_Беллара
Using this formula and the example in the C programming language, the program was written to compute n numbers after the decimal point.
http://bellard.org/pi/
Source: [
https://github.com/chelaxe/BellardPi
]