#4630: [already fixed?] bug in functions real() and imag().
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Reporter: ggrafendorfer | Owner: somebody
Type: defect | Status: new
Priority: major | Milestone: sage-4.0.1
Component: basic arithmetic | Keywords:
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Comment(by AlexGhitza):
This appears to be fixed in sage-4.0.1.alpha0:
{{{
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| Sage Version 4.0.1.alpha0, Release Date: 2009-05-31 |
| Type notebook() for the GUI, and license() for information. |
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sage: a = exp(I*0.2*pi); a; type(a); real(a); real(a).n()
e^(0.200000000000000*I*pi)
<type 'sage.symbolic.expression.Expression'>
cos(0.200000000000000*pi)
0.809016994374947
sage: b = exp(CDF(I)*0.2*pi); b; type(b); real(b); real(b).n()
e^(0.2*I*pi)
<type 'sage.symbolic.expression.Expression'>
cos(0.2*pi)
0.809016994375
sage: a = exp(I*0.2*pi); a; type(a); imag(a); imag(a).n()
e^(0.200000000000000*I*pi)
<type 'sage.symbolic.expression.Expression'>
sin(0.200000000000000*pi)
0.587785252292473
sage: b = exp(CDF(I)*0.2*pi); b; type(b); imag(b); imag(b).n()
e^(0.2*I*pi)
<type 'sage.symbolic.expression.Expression'>
sin(0.2*pi)
0.587785252292
sage: n(exp(CDF(I)*0.2*pi))
0.809016994375 + 0.587785252292*I
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4630#comment:1>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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