[Python-ideas] Python Numbers as Human Concept Decimal System

[Terry Reedy]

On 3/10/2014 7:02 PM, Nick Coghlan wrote:

> My take is that we're down to two main options:
>
> Stefan: use the existing decimal type, change default context to
> Decimal64, round all decimal literals to current context
>
> Oscar: new fixed width decimal64 builtin type, always uses Decimal64
> context (allowing constant folding), interoperates with variable context
> decimal.Decimal values (producing a decimal.Decimal result)
>
> I lean towards Oscar's proposal, as it removes the hidden context
> dependent behaviour and makes the builtin decimals true constant values.

Ditto for me. An everyday replacement for binary floats should be about 
as simple as binary floats, and simpler in the sense of having less 
surprising behavior.

-- 
Terry Jan Reedy