wichtounet / etl Goto Github PK

Great library. 👍

However I encountered some issues with the example on README page. The code below does not compile:

etl::dyn_vector<double> a({1.0,2.0,3.0});
etl::dyn_vector<double> b({3.0,2.0,1.0});
etl::dyn_vector<double> c(1.4 * (a + b) / b + b + a / 1.2);

However this works:

etl::dyn_vector<double> a({1.0,2.0,3.0});
etl::dyn_vector<double> b({3.0,2.0,1.0});
etl::dyn_vector<double> c;
c = 1.4 * (a + b) / b + b + a / 1.2;

I haven't investigated the code carefully, but it seems that the assignment operator is well defined but not the expression constructor. Since the example is taken from README, I suppose this is not by design. Any thoughts?

The library seem to be missing some parts:
/usr/local/include/etl/std.hpp:21:32: fatal error: cpp_utils/compat.hpp: No such file or directory
from "/etl/std.hpp" the inclusions are not provided
....
// cpp_utils
#include "cpp_utils/compat.hpp"
#include "cpp_utils/tmp.hpp"
#include "cpp_utils/likely.hpp"
#include "cpp_utils/assert.hpp"
#include "cpp_utils/parallel.hpp"

investingating source tree, no files in git directory.

Method of installation:
git clone https://github.com/wichtounet/etl.git
cp -R etl /usr/local/lib

Out of curiosity, have you compared performance between ETL and something like Eigen or Blaze? I know at least Eigen can link against BLAS as well.

I'm looking for a matrix library to use and came across yours.

Thanks!