Nick Alexander wrote:
On 8-Mar-10, at 6:03 PM, Dr. David Kirkby wrote:
I'm a bit puzzled by this one:
sage: def math_bessel_K(nu,x):
... return mathematica(nu).BesselK(x).N(20).sage()
...
sage: math_bessel_K(2,I) # optional - mathematica
0.180489972066962*I - 2.592886175491197 # 32-bit
-2.592886175491196978 + 0.1804899720669620266*I # 64-bit
What is supposed to be 32 or 64-bit ? Sage or Mathematica?
In this case, the # XXX-bit flag refer to whatever environment sage
thinks it is executing in.
I had this issue with Mathematica on multiple machines, and just wrote
sage: complex.Real, complex.Imag() to force the order and not deal with
Mathematica's formatting at all.
I'm puzzled why Mathematica would ever show the imaginary part of a complex
number before the real part. I can't ever recall that. I've lost my Book
Mathematica from Wolfram based on version 1, but I have a book on Mathematica
3.0. That was well before the time of a 64-bit version of Mathematica, yet the
real part is shown before the imaginary. It seems the most logical.
Anyway, for whatever reason, the doc test is failing. I'd like to know if there
is a function to find out if Mathematica is 32-bit or 64-bit, but I'm not
convinced that 32-bit versions show the imaginary component first. It's never
been my experience.
dave
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