More pseudo random number generators for calculators
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07-09-2020, 11:19 AM
Post: #4
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RE: More pseudo random number generators for calculators
Hi, Namir
Some algorithms you tested might get stuck, even with non-zero fractional part guess Example, say with 12 digits calculator: r = 0.999 999 999 r = frac(997/r) → r = frac(997.000000 997000000 997000000 ...) = .000 000 997 r = frac(997/r) → r = 0 r = frac(997/r) → r = NaN To avoid rounding errrors like above, multiply based versions is safer. With 15 digits internal precision, and 3 digits factor k, r = frac(k*r) is guaranteed exact. This may be why baseline use r = frac(997*r) |
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Messages In This Thread |
More pseudo random number generators for calculators - Namir - 07-08-2020, 02:19 PM
RE: More pseudo random number generators for calculators - Erik-M - 07-08-2020, 07:51 PM
RE: More pseudo random number generators for calculators - ttw - 07-09-2020, 03:45 AM
RE: More pseudo random number generators for calculators - Namir - 07-10-2020, 11:25 PM
RE: More pseudo random number generators for calculators - Namir - 07-15-2020, 06:12 AM
RE: More pseudo random number generators for calculators - Albert Chan - 07-09-2020 11:19 AM
RE: More pseudo random number generators for calculators - Namir - 07-09-2020, 07:35 PM
RE: More pseudo random number generators for calculators - Gene - 07-09-2020, 09:15 PM
RE: More pseudo random number generators for calculators - Namir - 07-09-2020, 09:45 PM
RE: More pseudo random number generators for calculators - ttw - 07-09-2020, 01:42 PM
RE: More pseudo random number generators for calculators - ttw - 07-13-2020, 03:00 PM
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