#4630: bug in functions real() and imag().
------------------------------+---------------------------------------------
Reporter: ggrafendorfer | Owner: somebody
Type: defect | Status: new
Priority: major | Milestone: sage-3.2.1
Component: basic arithmetic | Keywords:
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Using sage-3.2 (compiled with make), but the same behaviour also happens
on sage-3.1.4,
OS:Debian on a 32-bit Core-Duo machine,
the examples where I use 'a' as variable work well,
the examples where I use 'b' as variable ('I' is substituted by 'CDF(I)')
are buggy:
{{{
[EMAIL PROTECTED]:~/Daten/Sync/Phd/Code/sde$ sage
----------------------------------------------------------------------
| Sage Version 3.2, Release Date: 2008-11-20 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: a = exp(I*0.2*pi); a; type(a); real(a); real(a).n()
e^(0.200000000000000*I*pi)
<class 'sage.calculus.calculus.SymbolicComposition'>
cos(0.200000000000000*pi)
0.809016994374947
sage: b = exp(CDF(I)*0.2*pi); b; type(b); real(b); real(b).n()
e^(0.200000000000000*pi*I)
<class 'sage.calculus.calculus.SymbolicComposition'>
e^(0.200000000000000*pi*I)
0.809016994374947 + 0.587785252292473*I
sage: a = exp(I*0.2*pi); a; type(a); imag(a); imag(a).n()
e^(0.200000000000000*I*pi)
<class 'sage.calculus.calculus.SymbolicComposition'>
sin(0.200000000000000*pi)
0.587785252292473
sage: b = exp(CDF(I)*0.2*pi); b; type(b); imag(b); imag(b).n()
e^(0.200000000000000*pi*I)
<class 'sage.calculus.calculus.SymbolicComposition'>
0
0.000000000000000
sage: n(exp(CDF(I)*0.2*pi))
0.809016994374947 + 0.587785252292473*I
}}}
Georg
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4630>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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