#16592: bug in evaluation of maxima function with product/quotient/power
argument
--------------------------+----------------------------
Reporter: rws | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.3
Component: interfaces | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
--------------------------+----------------------------
From the report in http://ask.sagemath.org/question/10961/problems-with-
maximafunction-of-one-variable/
{{{
sage: var('f,k,x')
(f, k, x)
sage: F = maxima.function('x','f')
sage: k=F(0)
sage: F(k*x)
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
<ipython-input-46-eb3fed206854> in <module>()
----> 1 F(k*x)
/home/ralf/sage/local/lib/python2.7/site-
packages/sage/interfaces/maxima_abstract.pyc in __call__(self, *args)
2012 if len(args) == 1:
2013 args = '(%s)'%args
-> 2014 return P('%s%s'%(self.name(), args))
2015
2016 def __repr__(self):
/home/ralf/sage/local/lib/python2.7/site-
packages/sage/interfaces/interface.pyc in __call__(self, x, name)
197
198 if isinstance(x, basestring):
--> 199 return cls(self, x, name=name)
200 try:
201 return self._coerce_from_special_method(x)
/home/ralf/sage/local/lib/python2.7/site-
packages/sage/interfaces/maxima.pyc in __init__(self, parent, value,
is_name, name)
1127 True
1128 """
-> 1129 ExpectElement.__init__(self, parent, value, is_name=False,
name=None)
1130
1131 def display2d(self, onscreen=True):
/home/ralf/sage/local/lib/python2.7/site-
packages/sage/interfaces/expect.pyc in __init__(self, parent, value,
is_name, name)
1304 else:
1305 try:
-> 1306 self._name = parent._create(value, name=name)
1307 # Convert ValueError and RuntimeError to TypeError for
1308 # coercion to work properly.
/home/ralf/sage/local/lib/python2.7/site-
packages/sage/interfaces/interface.pyc in _create(self, value, name)
387 def _create(self, value, name=None):
388 name = self._next_var_name() if name is None else name
--> 389 self.set(name, value)
390 return name
391
/home/ralf/sage/local/lib/python2.7/site-
packages/sage/interfaces/maxima.pyc in set(self, var, value)
972 self._batch(cmd, batchload=True)
973 else:
--> 974 self._eval_line(cmd)
975 #self._sendline(cmd)
976 #self._expect_expr()
/home/ralf/sage/local/lib/python2.7/site-
packages/sage/interfaces/maxima.pyc in _eval_line(self, line,
allow_use_file, wait_for_prompt, reformat, error_check, restart_if_needed)
764 out = self._before() # input echo + output prompt +
output
765 if error_check:
--> 766 self._error_check(line, out)
767 if not reformat:
768 return out
/home/ralf/sage/local/lib/python2.7/site-
packages/sage/interfaces/maxima.pyc in _error_check(self, cmd, out)
904 m = r.search(out)
905 if not m is None:
--> 906 self._error_msg(cmd, out)
907
908 def _error_msg(self, cmd, out):
/home/ralf/sage/local/lib/python2.7/site-
packages/sage/interfaces/maxima.pyc in _error_msg(self, cmd, out)
921 Principal Value
922 """
--> 923 raise TypeError("Error executing code in
Maxima\nCODE:\n\t%s\nMaxima ERROR:\n\t%s"%(cmd, out.replace('-- an error.
To debug this try debugmode(true);','')))
924
925 ###########################################
TypeError: Error executing code in Maxima
CODE:
sage38 : sage33( f x)$
Maxima ERROR:
incorrect syntax: X is not an infix operator
f x)
^
}}}
On the other hand `F(k+k)`, `F(k*k)`, `F(k/x)`, and `F(k^x)` produces:
{{{
...
/home/ralf/sage/local/lib/python2.7/site-
packages/sage/interfaces/maxima.pyc in _eval_line(self, line,
allow_use_file, wait_for_prompt, reformat, error_check, restart_if_needed)
759 return
760 # line_echo sometimes has randomly inserted terminal echo
in front #15811
--> 761 assert line_echo.strip().endswith(line.strip()),
'mismatch:\n' + line_echo + line
762
763 self._expect_expr(self._display_prompt)
AssertionError: mismatch:
sage41 : sage33( f
sage41 : sage33( f
-
x)$
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/16592>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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