Please ignore my last post. I accidentally pressed send. Here is the
trivial patch.
# HG changeset patch
# User [EMAIL PROTECTED]
# Date 1179004720 -7200
# Node ID a76995d2eede8336dec553f24e1640e92fd77cb1
# Parent c23d6dc7ac4ba567fda8d7f05cca65f0daabc87a
Fix crash when floor and ceil are applied to a non number.
diff -r c23d6dc7ac4b -r a76995d2eede sage/rings/real_mpfr.pyx
--- a/sage/rings/real_mpfr.pyx Fri May 11 09:52:14 2007 -0700
+++ b/sage/rings/real_mpfr.pyx Sat May 12 23:18:40 2007 +0200
@@ -1163,8 +1163,14 @@ cdef class RealNumber(sage.structure.ele
2
sage: floor(RR(-5/2))
-3
- """
- cdef RealNumber x
+ sage: floor(RR(+infinity))
+ Traceback (most recent call last):
+ ...
+ ValueError: Calling floor() on infinity or NaN
+ """
+ cdef RealNumber x
+ if not mpfr_number_p(self.value):
+ raise ValueError, 'Calling floor() on infinity or NaN'
x = self._new()
mpfr_floor(x.value, self.value)
return x.integer_part()
@@ -1188,8 +1194,14 @@ cdef class RealNumber(sage.structure.ele
10000000000000000
sage: ceil(10^17 * 1.0)
100000000000000000
- """
- cdef RealNumber x
+ sage: ceil(RR(+infinity))
+ Traceback (most recent call last):
+ ...
+ ValueError: Calling ceil() on infinity or NaN
+ """
+ cdef RealNumber x
+ if not mpfr_number_p(self.value):
+ raise ValueError, 'Calling ceil() on infinity or NaN'
x = self._new()
mpfr_ceil(x.value, self.value)
return x.integer_part()
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