The example in http://www.sagemath.org/doc/html/prog/node43.html
does not compile on Debian 2.6.22-3-686
[cython]$ cat muladd.spyx
cimport sage.rings.integer
def muladd(sage.rings.integer.Integer a,
sage.rings.integer.Integer b,
sage.rings.integer.Integer c):
"""
Compute a*b + c
"""
cdef sage.rings.integer.Integer d
d = sage.rings.integer.Integer()
mpz_mul(d.value, a.value, b.value)
mpz_add(d.value, d.value, c.value)
return d
Replacing
cdef sage.rings.integer.Integer d
d = sage.rings.integer.Integer()
with
cdef sage.rings.integer.Integer d = sage.rings.integer.Integer()
it compiles and runs.
Here is the error message (very cryptic):
[cython]$ sage
----------------------------------------------------------------------
| SAGE Version 3.0.1, Release Date: 2008-05-05 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: load "muladd.spyx"
Compiling muladd.spyx...
Error compiling cython file:
Error converting muladd.spyx to C:
Traceback (most recent call last):
File "/home/mario/Packages/sage/sage-2.10/local/bin/cython", line 8,
in <module>
main(command_line = 1)
File "/home/mario/Packages/sage/sage-2.10/local/lib/python2.5/site-
packages/Cy
thon/Compiler/Main.py", line 340, in main
result = context.compile(source, options)
File "/home/mario/Packages/sage/sage-2.10/local/lib/python2.5/site-
packages/Cy
thon/Compiler/Main.py", line 213, in compile
tree.process_implementation(scope, options, result)
File "/home/mario/Packages/sage/sage-2.10/local/lib/python2.5/site-
packages/Cy
thon/Compiler/ModuleNode.py", line 57, in process_implementation
self.generate_c_code(env, options, result)
File "/home/mario/Packages/sage/sage-2.10/local/lib/python2.5/site-
packages/Cy
thon/Compiler/ModuleNode.py", line 251, in generate_c_code
code.save_annotation(result.c_file[:-1] + "pyx") # change?
File "/home/mario/Packages/sage/sage-2.10/local/lib/python2.5/site-
packages/Cy
thon/Compiler/Annotate.py", line 146, in save_annotation
line = line.replace(cc, html)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xf0 in position
0: ordinal
not in range(128)
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