On 4/9/24 10:40 AM, Robert Dodier
wrote:
On Mon, Apr 8, 2024 at 8:36 AM Robert Dodier <robert.dodier@gmail.com> wrote:
Running tests in rtestint:
********************** Problem 56 ***************
Input:
cos(x)
integrate(------, x, minf, inf)
2
x + 1
Result:
- 1 2
%e (%e + 1) %pi
-------------------
2
This differed from the expected result:
- 1
%e %pi
Incidentally that looks like a display bug, which is shown by all
Lisps; should be displayed as a ratio %pi/%e. Guessing that flags in
the car of %e^-1 are interfering with NFORMAT or DISPLA itself.
Interesting. But
there must be something else going on:
(%i1) %pi/%e;
Evaluation took 0.0000 seconds (0.0200 elapsed) using 4.102 KB.
- 1
(%o1) %e %pi
(%i2) :lisp $%o1
((MTIMES SIMP) ((MEXPT SIMP) $%E -1) $%PI)
(%i2) %pi/%gamma;
Evaluation took 0.0000 seconds (0.0000 elapsed) using 3.906 KB.
%pi
(%o2) ──────
%gamma
(%i3) :lisp $%o2
((MTIMES SIMP) ((MEXPT SIMP) $%GAMMA -1) $%PI)
So %pi/%e
and %pi/%gamma
have the same flags. I guess that means nformat
or displa
has some kind of special case for %e^-1.