Geodesic
Variable-precision arithmetic considered perilous - a detective story
Electronic transactions on numerical analysis, Tome 28 (2008).

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: In 2002, I was interested in computations to very high precision, having been challenged by Nick Trefethen to compute a number he called $\tau$ up to 10000 digits. This number is the sum of ten other numbers, each of which was defined by a difficult computational problem. The story is told in [F. Bornemann, D. Laurie et al., The SIAM 100-Digit Challenge: A Study in High-Accuracy Numerical Computing, SIAM, Philadelphia (2004)]. 
@article{ETNA_2008__28__a3,
     author = {Laurie, Dirk},
     title = {Variable-precision arithmetic considered perilous - a detective story},
     journal = {Electronic transactions on numerical analysis},
     publisher = {mathdoc},
     volume = {28},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2008__28__a3/}
}
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Laurie, Dirk. Variable-precision arithmetic considered perilous - a detective story. Electronic transactions on numerical analysis, Tome 28 (2008). http://geodesic.mathdoc.fr/item/ETNA_2008__28__a3/