>Rounding schemes/ Truncation schemes

>The choice of schemes decides the max error and bias.

I am not quite sure what you mean, but I think that you are roughlyQuote:>Zero bias schemes on an average cause little error but there is a large

>chance htat they might hav a bias too and not end up with an error of

>zero. Am I right or wrong

right. Most zero bias schemes have no bias, assuming that the errors

are uniformly distributed. True probabilistic (stochastic) rounding

has no bias, whatever the distribution of errors, but has twice the

mean square error and makes debugging slightly (!) harder.

Almost always IEEE 754, or minor variants of it.Quote:>What are the rounding schemes / truncation schemes in use nowadays

Regards,

Nick Maclaren.