* [#16596](https://bugzilla.scilab.org/16596): Concatenating encoded integers with sparse numeric data was not possible.
* [#16608](https://bugzilla.scilab.org/16608): `union` did not support input boolean, sparse boolean, nor sparse numerical matrices. The result of `union(complexA, complexB)` was wrongly conjugate.
* [#16609](https://bugzilla.scilab.org/16609): `bitcmp` needed to be upgraded for Scilab 6.
+* [#16612](https://bugzilla.scilab.org/16612): Unlike the `.*.` operator, `kron()` was not defined for sparse numeric matrices.
* [#16622](https://bugzilla.scilab.org/16622): `inv` could no longer be overloaded for hypermatrices of decimal or complex numbers.
* [#16623](https://bugzilla.scilab.org/16623): `rand(2,2,2)^2` yielded a wrong result instead of trying to call the `%s_p_s` overload for input hypermatrices.
* [#16629](https://bugzilla.scilab.org/16629): `interp1`'s documentation did not tell the spline edges conditions ; extrapolation modes were poorly explained. ; the description of the result's size was completely wrong ; x as an option was not documented. A wrong extrapolation value could silently return a wrong result. There was some dead code like `if varargin(5)==%nan`. A bugged error message yielded its own error. When x is implicit, the argument index in error messages could be wrong. `periodic` and `edgevalue` extrapolation modes were not available. `linear` extrapolation was not available for splines. When `xp` is an hypermatrix with `size(xp,1)==1`, the size of the result was irregular/wrong.
--- /dev/null
+// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+// Copyright (C) 2020 - Samuel GOUGEON
+//
+// This file is hereby licensed under the terms of the GNU GPL v2.0,
+// pursuant to article 5.3.4 of the CeCILL v.2.1.
+// This file was originally licensed under the terms of the CeCILL v2.1,
+// and continues to be available under such terms.
+// For more information, see the COPYING file which you should have received
+// along with this program.
+
+function r = %s_kron(s, op2)
+ r = s .*. op2
+endfunction
--- /dev/null
+// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+// Copyright (C) 2020 - Samuel GOUGEON
+//
+// This file is hereby licensed under the terms of the GNU GPL v2.0,
+// pursuant to article 5.3.4 of the CeCILL v.2.1.
+// This file was originally licensed under the terms of the CeCILL v2.1,
+// and continues to be available under such terms.
+// For more information, see the COPYING file which you should have received
+// along with this program.
+
+function r = %sp_kron(sp, op2)
+ r = sp .*. op2
+endfunction
--- /dev/null
+// =============================================================================
+// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+// Copyright (C) 2020 - Samuel GOUGEON
+//
+// This file is distributed under the same license as the Scilab package.
+// =============================================================================
+// <-- CLI SHELL MODE -->
+// <-- NO CHECK REF -->
+//
+// <-- Non-regression test for bug 16612 -->
+//
+// <-- Bugzilla URL -->
+// http://bugzilla.scilab.org/16612
+//
+// <-- Short Description -->
+// kron() did not map .*. for sparse numeric argins
+
+m = 0:2;
+sp = sparse(m);
+assert_checkequal(kron(sp, m), sp .*. m);
+assert_checkequal(kron(sp, sp), sp .*. sp);
+assert_checkequal(kron(m, sp), m .*. sp);