2009/11/30 Aaron S. Meurer <asmeu...@gmail.com>
> OK, here are some things that work differently in the two platforms:
>
> On 32-bit:
>
> In [6]: print S("(C1 + C2*x)*sin(x*sqrt(2)) + (C3 + C4*x)*cos(x*sqrt(2))")
> (C1 + C2*x)*sin(x*2**(1/2)) + (C3 + C4*x)*cos(x*2**(1/2))
>
> In [5]: print dsolve(f(x).diff(x, x, x, x) + 4*f(x).diff(x, x) + 4*f(x),
> f(x))
> f(x) == (C1 + C2*x)*sin(x*2**(1/2)) + (C3 + C4*x)*cos(x*2**(1/2))
>
> On 64-bit:
>
> In [6]: print S("(C1 + C2*x)*sin(x*sqrt(2)) + (C3 + C4*x)*cos(x*sqrt(2))")
> (C3 + C4*x)*cos(x*2**(1/2)) + (C1 + C2*x)*sin(x*2**(1/2))
>
> In [7]: print dsolve(f(x).diff(x, x, x, x) + 4*f(x).diff(x, x) + 4*f(x),
> f(x))
> f(x) == (C3 + C4*x)*cos(x*2**(1/2)) + (C1 + C2*x)*sin(x*2**(1/2))
>
> Notice how the sin and cos are printed differently in each case. This is
> because Basic._compare_pretty works differently on the two architectures
> (see commit a226e2efe227d0120932224f5f973d317086da89) and is probably also
> related to the .args difference I noted earlier.
>
If this example could be simplified, I'd add it to the documentation.
2009/11/30 Ondrej Certik <ond...@certik.cz>
> I like the patch. If all tests pass, let's put it in.
There is actually no logic changed or added that could make a test fail.
Vinzent.
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