From 95b814e1637c281b6cc771b0c89e3475a27323c9 Mon Sep 17 00:00:00 2001
From: Andrei Kislitsyn <kisandy@yandex.ru>
Date: Fri, 12 Mar 2021 14:29:51 +0300
Subject: [PATCH] add fromMatrix

---
 .../kotlin/space/kscience/kmath/tensors/BufferTensor.kt  | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/kmath-core/src/commonMain/kotlin/space/kscience/kmath/tensors/BufferTensor.kt b/kmath-core/src/commonMain/kotlin/space/kscience/kmath/tensors/BufferTensor.kt
index 4d8aea32c..817c51f11 100644
--- a/kmath-core/src/commonMain/kotlin/space/kscience/kmath/tensors/BufferTensor.kt
+++ b/kmath-core/src/commonMain/kotlin/space/kscience/kmath/tensors/BufferTensor.kt
@@ -2,8 +2,12 @@ package space.kscience.kmath.tensors
 
 import space.kscience.kmath.linear.BufferMatrix
 import space.kscience.kmath.linear.RealMatrixContext.toBufferMatrix
+import space.kscience.kmath.nd.Matrix
 import space.kscience.kmath.nd.MutableNDBuffer
+import space.kscience.kmath.nd.Structure2D
 import space.kscience.kmath.nd.as2D
+import space.kscience.kmath.structures.Buffer
+import space.kscience.kmath.structures.BufferAccessor2D
 import space.kscience.kmath.structures.MutableBuffer
 import space.kscience.kmath.structures.toList
 
@@ -22,7 +26,8 @@ public fun <T : Any> BufferTensor<T>.toBufferMatrix(): BufferMatrix<T> {
     return BufferMatrix(shape[0], shape[1], this.buffer)
 }
 
-public fun  <T : Any> BufferMatrix<T>.BufferTensor(): BufferTensor<T> {
-    return BufferTensor(intArrayOf(rowNum, colNum), buffer)
+// T???
+public fun BufferMatrix<Double>.BufferTensor(): BufferTensor<Double> {
+    return BufferTensor(intArrayOf(rowNum, colNum),  BufferAccessor2D(rowNum, colNum, Buffer.Companion::real).create(this))
 }