Bill Allombert on Thu, 25 Oct 2012 23:26:24 +0200 |
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%Ps of t_REAL |
Hello PARI developers, ? \p10000 realprecision = 10018 significant digits (10000 digits displayed) ? a=Pi; ? \p38 realprecision = 38 significant digits ? printf("%s",a) 3.1415926535897932384626433832795028842 I know this is the documented behaviour but I cannot say I ever liked it. I would much prefer to get 10018 digits. (If I wanted 38 digits, I would do the computation to 38 digits, or I would write %.38s). I know I can do printf("%.*g",precision(a),a) but it is hardly convenient and does not work if a is a polynomial: ? printf("%.*g",precision(a),a*x) *** at top-level: printf("%.*g",precis *** ^-------------------- *** printf: incorrect type in gtofp (t_POL). ? printf("%.*s",precision(a),a*x) 3.1415926535897932384626433832795028842*x It is worse in library mode where you do not have any control over realprecision. It is especially painful with err_printf which is used for debugging, when the interesting digits are discarded. Cheers, Bill.