Another important advantage to the format is that unlike
conventional floats, posits produce the same bit-wise results on any
system, which is something that cannot be guaranteed with the IEEE
standard (even the same computation on the same system can product
different results for floats). It also does away with rounding
errors, overflow and underflow exceptions, subnormal (denormalized)
numbers, and the plethora of not-a-number (NaN) values.
Additionally, posits avoids the weirdness of 0 and -0 as two
distinct values. Instead it uses an integer-like twos complement
form to encapsulate the sign, which means that simple bit-wise
comparisons are valid.
https://www.nextplatform.com/2019/07/08/new-approach-could-sink-floating-point-computation/
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Received on Wed Jul 17 2019 - 21:00:02 PDT
