#8606: floats in exponent do not propagate
--------------------------------+-------------------------------------------
Reporter: zimmerma | Owner: AlexGhitza
Type: defect | Status: new
Priority: major | Milestone: sage-4.4
Component: basic arithmetic | Keywords: float, RR
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Consider the following (sage 4.3.3, since 4.3.4 does not compile
on my machine):
{{{
sage: 2.0^53
9.00719925474099e15
}}}
This is what we expect: the float {{{2.0}}} propagates to the whole
expression.
However:
{{{
sage: 2^53.0
9007199254740992
}}}
Note the result is an integer, not a float! Thus the information
about the inexact value has been lost. Same thing with
{{{2^float(53)}}} and {{{2^RR(53)}}}.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8606>
Sage <http://www.sagemath.org>
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