The way how I create my mpf_class effects the result after a arithmetic operation
tg at gmplib.org
Wed Jan 28 17:21:01 UTC 2015
H8H <h8h at dev-nu11.de> writes:
But could you tell me some use cases for which it is better to create a
mpf_class from a double instead of creating it from a string to have a
higher precision? Has it a better performance? Is it better for lower
Mainly for interoperability. But it seems to be a source of recurrent
confusion, so perhaps we should have made it really irksome. :-)
But then again, assigning "3.4" as a string to a low-precision mpf
number will not yield the result people might expect.
For me it makes no sense to create a mpf_class from a double and have a
very poor precision.
I agree it usually makes little sense.
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