Ruud van Silfhout wrote:
Hi,
I have made an extension for the reverse function in std_vector.hh. The
code suggests to implement template specialisation for reverse vector<int>.
This is what I have done, plus specialisation for float and double vectors.
The code depends on the availability of memrev, which is not available
on all platforms.So a check is required (during configure) to
on which platforms is it available?
[EMAIL PROTECTED] ~]$ grep memrev /usr/include/* /usr/include/c++/4.1.1/*/*
[EMAIL PROTECTED] ~]$
In case memrev is not available there are two options:
1. skip the specialized template implementation for <int> <float>
<double> and keep the generic template code. This is what is implemented
now.
2. implement a replacement for memrev. a simple replacement is added
below. I don't know where to put it.
libc-extension.cc seems like a good place.
it uses malloc to allocate memory for each item. This can also be done
using alloca, which allocates memory on the stack and, as a consequence,
Why not simply swap byte by byte in an inner loop?
--
Han-Wen Nienhuys - [EMAIL PROTECTED] - http://www.xs4all.nl/~hanwen
LilyPond Software Design
-- Code for Music Notation
http://www.lilypond-design.com
_______________________________________________
lilypond-devel mailing list
[email protected]
http://lists.gnu.org/mailman/listinfo/lilypond-devel
