add is_hdf5()

Author: scivision

+stdlib/is_hdf5.m

@@ -0,0 +1,10 @@
+%% IS_HDF5 is file an HDF5 file?
+
+function is_hdf5 = is_hdf5(filename)
+arguments
+  filename {mustBeTextScalar}
+end
+
+is_hdf5 = H5F.is_hdf5(filename) == 1;
+
+end

test/TestHDF5.m

@@ -38,6 +38,9 @@ function setup_file(tc)
 
 % create test data first, so that parallel tests works
 stdlib.h5save(bf, '/A0', A0)
+
+tc.assertTrue(stdlib.is_hdf5(bf))
+
 stdlib.h5save(bf, '/A1', A1)
 stdlib.h5save(bf, '/A2', A2)
 stdlib.h5save(bf, '/A3', A3, "size", size(A3))