Merge pull request #92 from zdaq12/units

adding cm and um to units

Author: slayoo

src/pypartmc.cpp

@@ -189,6 +189,8 @@ PYBIND11_MODULE(PyPartMC, m) {
     si.attr("mol") = py::float_(1.);
     si.attr("kg") = py::float_(1.);
     si.attr("g") = py::float_(1e-3);
+    si.attr("cm") = py::float_(.01);
+    si.attr("um") = py::float_(1e-6);
 
     m.attr("__version__") = MACRO_STRINGIFY(VERSION_INFO);
 }

tests/test_units.py

@@ -6,6 +6,8 @@ class TestUnits:
     @staticmethod
     def test_length():
         assert ppmc.si.m == 1
+        assert ppmc.si.cm == 0.01
+        assert ppmc.si.um == 1e-6
 
     @staticmethod
     def test_temperatur():