added scalar_sign_op (both real,complex)

1 files changed, 12 insertions, 0 deletions

diff --git a/Eigen/src/plugins/MatrixCwiseUnaryOps.h b/Eigen/src/plugins/MatrixCwiseUnaryOps.h
index e339140bf..e16bb374b 100644
--- a/Eigen/src/plugins/MatrixCwiseUnaryOps.h
+++ b/Eigen/src/plugins/MatrixCwiseUnaryOps.h
@@ -14,6 +14,7 @@
 typedef CwiseUnaryOp<internal::scalar_abs_op<Scalar>, const Derived> CwiseAbsReturnType;
 typedef CwiseUnaryOp<internal::scalar_abs2_op<Scalar>, const Derived> CwiseAbs2ReturnType;
 typedef CwiseUnaryOp<internal::scalar_sqrt_op<Scalar>, const Derived> CwiseSqrtReturnType;
+typedef CwiseUnaryOp<internal::scalar_sign_op<Scalar>, const Derived> CwiseSignReturnType;
 typedef CwiseUnaryOp<internal::scalar_inverse_op<Scalar>, const Derived> CwiseInverseReturnType;
 
 /** \returns an expression of the coefficient-wise absolute value of \c *this
@@ -49,6 +50,17 @@ EIGEN_DEVICE_FUNC
 inline const CwiseSqrtReturnType
 cwiseSqrt() const { return CwiseSqrtReturnType(derived()); }
 
+/** \returns an expression of the coefficient-wise signum of *this.
+  *
+  * Example: \include MatrixBase_cwiseSign.cpp
+  * Output: \verbinclude MatrixBase_cwiseSign.out
+  *
+  */
+EIGEN_DEVICE_FUNC
+inline const CwiseSignReturnType
+cwiseSign() const { return CwiseSignReturnType(derived()); }
+
+
 /** \returns an expression of the coefficient-wise inverse of *this.
   *
   * Example: \include MatrixBase_cwiseInverse.cpp