Merge branch 'artifacts' into 'master'

Build source release tarballs

See merge request mtr/cxxbase!6

.gitlab-ci.yml

@@ -7,6 +7,7 @@ variables:
 stages:
   - build_docker
   - testing
+  - build_tarballs
 
 build_docker:
   image: docker:stable
@@ -89,3 +90,25 @@ test_pyinterpol_ng_clang:
     - cd ../pyinterpol_ng
     - CC="clang -fsized-deallocation" python3 setup.py install --user -f
     - pytest-3 -q test
+
+release:
+  stage: build_tarballs
+  script:
+    - cd pypocketfft
+    - python3 setup.py sdist
+    - 'mv dist/*.tar.gz ..'
+    - cd ../pysharp
+    - python3 setup.py sdist
+    - 'mv dist/*.tar.gz ..'
+    - cd ../nifty_gridder
+    - python3 setup.py sdist
+    - 'mv dist/*.tar.gz ..'
+    - cd ../pyHealpix
+    - python3 setup.py sdist
+    - 'mv dist/*.tar.gz ..'
+    - cd ../pyinterpol_ng
+    - python3 setup.py sdist
+    - 'mv dist/*.tar.gz ..'
+  artifacts:
+    paths:
+      - '*.tar.gz'

pyinterpol_ng/interpol_ng.h

@@ -535,9 +535,13 @@ template<typename T> class Interpolator
       }
   };
 
+double epsilon_guess(size_t support, double ofactor)
+  { return std::sqrt(12.)*std::exp(-(support*ofactor)); }
+
 }
 
 using detail_interpol_ng::Interpolator;
+using detail_interpol_ng::epsilon_guess;
 
 }
 

pyinterpol_ng/pyinterpol_ng.cc

@@ -256,4 +256,5 @@ PYBIND11_MODULE(pyinterpol_ng, m)
   m.def("rotate_alm", &pyrotate_alm<fptype>, "alm"_a, "lmax"_a, "psi"_a, "theta"_a,
     "phi"_a);
 #endif
+  m.def("epsilon_guess", &epsilon_guess, "support"_a, "ofactor"_a);
   }

pyinterpol_ng/usage.py

@@ -57,6 +57,8 @@ print("...done")
 # If we had specified `separate=True`, it would be of shape(nptg, 3).
 print(res.shape)
 
+# Since the interpolator object holds large data structures, it should be
+# deleted once it is no longer needed
 del inter_classic
 
 # Now the same thing for an experiment with HWP. In this case we need the