add support for global math function for array

1 files changed, 55 insertions, 0 deletions

diff --git a/Eigen/src/Array/GlobalFunctions.h b/Eigen/src/Array/GlobalFunctions.h
new file mode 100644
index 000000000..33f00c2ba
--- /dev/null
+++ b/Eigen/src/Array/GlobalFunctions.h
@@ -0,0 +1,55 @@
+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2010 Gael Guennebaud <g.gael@free.fr>
+//
+// Eigen is free software; you can redistribute it and/or
+// modify it under the terms of 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.
+//
+// Alternatively, you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// Eigen 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 Lesser General Public License or the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License and a copy of the GNU General Public License along with
+// Eigen. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef EIGEN_GLOBAL_FUNCTIONS_H
+#define EIGEN_GLOBAL_FUNCTIONS_H
+
+#define EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(NAME,FUNCTOR) \
+  template<typename Derived> \
+  inline const Eigen::CwiseUnaryOp<Eigen::FUNCTOR<typename Derived::Scalar>, Derived> \
+  NAME(const Eigen::ArrayBase<Derived>& x) { \
+    return x.derived(); \
+  }
+  
+namespace std
+{
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(sin,ei_scalar_sin_op)
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(cos,ei_scalar_cos_op)
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(exp,ei_scalar_exp_op)
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(log,ei_scalar_log_op)
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(abs,ei_scalar_abs_op)
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(sqrt,ei_scalar_sqrt_op)
+}
+
+namespace Eigen
+{
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(ei_sin,ei_scalar_sin_op)
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(ei_cos,ei_scalar_cos_op)
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(ei_exp,ei_scalar_exp_op)
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(ei_log,ei_scalar_log_op)
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(ei_abs,ei_scalar_abs_op)
+  EIGEN_ARRAY_DECLARARE_GLOBAL_UNARY(ei_sqrt,ei_scalar_sqrt_op)
+}
+
+#endif // EIGEN_GLOBAL_FUNCTIONS_H