#13352: Running time improvement of the bitset_len method
---------------------------------+----------------------------
Reporter: dcoudert | Owner: jason
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.12
Component: misc | Resolution:
Keywords: | Merged in:
Authors: David Coudert | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by ncohen):
I meant your patch, without modifications. As for the errors you get, I
think it's because the file gets compiled with gcc instead of g++. Volker
said that it should be sufficient to make it a .cc file, and that GCC
would take the hint and use the right compiler instead. It does work when
outside of Sage :
{{{
~$ cp a.cc a.c
~$ gcc a.c -o a
a.c:31:12: error: redefinition of ‘popcount’
inline int popcount(unsigned int i){
^
a.c:26:12: note: previous definition of ‘popcount’ was here
inline int popcount(unsigned int i){
^
a.c:35:12: error: redefinition of ‘popcountl’
inline int popcountl(unsigned long i){
^
a.c:10:12: note: previous definition of ‘popcountl’ was here
inline int popcountl(unsigned long i){
^
~$ gcc a.cc -o a
~$
}}}
Though there does not seem to be anything wrong with "default" on my
computer. Which version of gcc are you using ? It's probably < 4.8.
Nathann
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Ticket URL: <http://trac.sagemath.org/ticket/13352#comment:24>
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