From f10a72f74763c703909fc3a598bff5daa3f7140d Mon Sep 17 00:00:00 2001
From: dogvane <dogvane@163.com>
Date: Sun, 1 Mar 2020 20:33:17 +0800
Subject: [PATCH] =?UTF-8?q?1.=20=E5=A2=9E=E5=8A=A0=E4=B8=80=E4=B8=AA?=
 =?UTF-8?q?=E5=87=8F=E6=B3=95=E8=BF=90=E7=AE=97=E5=87=BD=E6=95=B0=202.=20?=
 =?UTF-8?q?=E4=BF=AE=E6=AD=A3=E4=B8=80=E4=B8=AA=E7=BC=BA=E5=B0=91=E5=8F=82?=
 =?UTF-8?q?=E6=95=B0=E5=A4=84=E7=90=86=E7=9A=84bug?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/TensorFlowNET.Core/APIs/tf.math.cs        | 23 +++++++++++++++++--
 .../Sessions/_FetchHandler.cs                 |  3 +++
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/src/TensorFlowNET.Core/APIs/tf.math.cs b/src/TensorFlowNET.Core/APIs/tf.math.cs
index a28ec9d3..6e093cb6 100644
--- a/src/TensorFlowNET.Core/APIs/tf.math.cs
+++ b/src/TensorFlowNET.Core/APIs/tf.math.cs
@@ -269,6 +269,16 @@ namespace Tensorflow
         public Tensor subtract<T>(Tensor x, T[] y, string name = null) where T : struct
             => gen_math_ops.sub(x, ops.convert_to_tensor(y, dtype: x.dtype.as_base_dtype(), name: "y"), name);
 
+        /// <summary>
+        /// return x - y
+        /// </summary>
+        /// <param name="x"></param>
+        /// <param name="y"></param>
+        /// <param name="name"></param>
+        /// <returns></returns>
+        public Tensor subtract(Tensor x, Tensor y, string name = null)
+            => gen_math_ops.sub(x, y, name);
+
         public Tensor log(Tensor x, string name = null)
             => gen_math_ops.log(x, name);
 
@@ -335,8 +345,17 @@ namespace Tensorflow
         public Tensor minimum<T1, T2>(T1 x, T2 y, string name = null)
             => gen_math_ops.minimum(x, y, name: name);
 
-        public Tensor multiply<Tx, Ty>(Tx x, Ty y) 
-            => gen_math_ops.mul(x, y);
+        /// <summary>
+        /// return x * y
+        /// </summary>
+        /// <typeparam name="Tx"></typeparam>
+        /// <typeparam name="Ty"></typeparam>
+        /// <param name="x"></param>
+        /// <param name="y"></param>
+        /// <param name="name"></param>
+        /// <returns></returns>
+        public Tensor multiply<Tx, Ty>(Tx x, Ty y, string name = null) 
+            => gen_math_ops.mul(x, y, name: name);
 
         public Tensor negative(Tensor x, string name = null)
             => gen_math_ops.neg(x, name);
diff --git a/src/TensorFlowNET.Core/Sessions/_FetchHandler.cs b/src/TensorFlowNET.Core/Sessions/_FetchHandler.cs
index 79692798..84cae247 100644
--- a/src/TensorFlowNET.Core/Sessions/_FetchHandler.cs
+++ b/src/TensorFlowNET.Core/Sessions/_FetchHandler.cs
@@ -80,6 +80,9 @@ namespace Tensorflow
                             case NPTypeCode.Single:
                                 full_values.Add(float.NaN);
                                 break;
+                            case NPTypeCode.Double:
+                                full_values.Add(float.NaN);
+                                break;
                             case NPTypeCode.String:
                                 full_values.Add(float.NaN);
                                 break;