add copysign

Author: ikbuibui

include/pmacc/math/functions/Copysign.hpp

@@ -0,0 +1,33 @@
+/* Copyright 2025-2025 Tapish Narwal
+ *
+ * This file is part of PMacc.
+ *
+ * PMacc is free software: you can redistribute it and/or modify
+ * it under the terms of either the GNU General Public License or
+ * the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * PMacc is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License and the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * and the GNU Lesser General Public License along with PMacc.
+ * If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#pragma once
+
+#include "pmacc/math/functions/Common.hpp"
+
+#include <alpaka/alpaka.hpp>
+
+namespace pmacc::math
+{
+    //! Create value with the magnitude of x and the sign of y.
+    ALPAKA_BINARY_MATH_FN(copysign, alpaka::math::ConceptMathCopysign, Copysign)
+} // namespace pmacc::math

include/pmacc/math/math.hpp

@@ -24,6 +24,7 @@
 
 #include "pmacc/math/functions/Abs.hpp"
 #include "pmacc/math/functions/Comparison.hpp"
+#include "pmacc/math/functions/Copysign.hpp"
 #include "pmacc/math/functions/Erf.hpp"
 #include "pmacc/math/functions/Exp.hpp"
 #include "pmacc/math/functions/Log.hpp"