Interval and ball field elements conversion to Python float/complex

[rwst]

Each of float(RIF(1)),float(RBF(1)),float(CBF(1)) fails with

TypeError: float() argument must be a string or a number

and float(CIF(1)) fails with

TypeError: can't convert complex interval to float

i.e. the __float__() member exists but is not implemented.

Component: numerical

Author: Ralf Stephan

Branch/Commit: 4138752

Reviewer: Travis Scrimshaw

Issue created by migration from https://trac.sagemath.org/ticket/23145

[rwst]

Branch: u/rws/interval_and_ball_field_elements_conversion_to_python_float_complex

[rwst]

New commits:

13bb3b0

23145: Interval and ball field elements conversion to Python float/complex

[rwst]

Author: Ralf Stephan

[rwst]

Commit: 13bb3b0

[tscrim]

Reviewer: Travis Scrimshaw

[tscrim]

comment:4

These should all be there because we can naturally convert to RR, which has coercions to RDF and floats.

[vbraun]

comment:5

See patchbot

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

025ba10	Merge branch 'develop' into t/23145/interval_and_ball_field_elements_conversion_to_python_float_complex
4138752	23145: fix doctest

[sagetrac-git]

Changed commit from 13bb3b0 to 4138752

[rwst]

comment:7

Just a quick fix for a missed doctest.

[vbraun]

Changed branch from u/rws/interval_and_ball_field_elements_conversion_to_python_float_complex to 4138752