From 39baff850c2f4fe1fee3b7a3918ba62a526e4f08 Mon Sep 17 00:00:00 2001
From: Eugene Brevdo <ebrevdo@gmail.com>
Date: Thu, 2 Jun 2016 17:04:19 -0700
Subject: Add TernaryFunctors and the betainc SpecialFunction. TernaryFunctors
 and their executors allow operations on 3-tuples of inputs. API fully
 implemented for Arrays and Tensors based on binary functors.

Ported the cephes betainc function (regularized incomplete beta
integral) to Eigen, with support for CPU and GPU, floats, doubles, and
half types.

Added unit tests in array.cpp and cxx11_tensor_cuda.cu


Collapsed revision
* Merged helper methods for betainc across floats and doubles.
* Added TensorGlobalFunctions with betainc().  Removed betainc() from TensorBase.
* Clean up CwiseTernaryOp checks, change igamma_helper to cephes_helper.
* betainc: merge incbcf and incbd into incbeta_cfe.  and more cleanup.
* Update TernaryOp and SpecialFunctions (betainc) based on review comments.
---
 unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h')

diff --git a/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h b/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
index a1a18d938..f35275ffb 100644
--- a/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
+++ b/unsupported/Eigen/CXX11/src/Tensor/TensorForwardDeclarations.h
@@ -21,6 +21,7 @@ template<typename Derived, int AccessLevel = internal::accessors_level<Derived>:
 template<typename NullaryOp, typename PlainObjectType> class TensorCwiseNullaryOp;
 template<typename UnaryOp, typename XprType> class TensorCwiseUnaryOp;
 template<typename BinaryOp, typename LeftXprType, typename RightXprType> class TensorCwiseBinaryOp;
+template<typename TernaryOp, typename Arg1XprType, typename Arg2XprType, typename Arg3XprType> class TensorCwiseTernaryOp;
 template<typename IfXprType, typename ThenXprType, typename ElseXprType> class TensorSelectOp;
 template<typename Op, typename Dims, typename XprType> class TensorReductionOp;
 template<typename XprType> class TensorIndexTupleOp;
-- 
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