com.intel.analytics.bigdl.nn.ops.Digamma.scala Maven / Gradle / Ivy
/*
* Copyright 2016 The BigDL Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intel.analytics.bigdl.nn.ops
import com.intel.analytics.bigdl.tensor.Tensor
import com.intel.analytics.bigdl.tensor.TensorNumericMath.TensorNumeric
import scala.reflect.ClassTag
class Digamma[T: ClassTag, D: ClassTag]()(implicit ev: TensorNumeric[T], ev2: TensorNumeric[D])
extends Operation[Tensor[D], Tensor[D], T] {
output = Tensor[D]()
override def updateOutput(input: Tensor[D]): Tensor[D] = {
output.resizeAs(input).copy(input).digamma()
output
}
override def getClassTagNumerics() : (Array[ClassTag[_]], Array[TensorNumeric[_]]) = {
(Array(scala.reflect.classTag[T], scala.reflect.classTag[D]), Array(ev, ev2))
}
}
object Digamma {
def apply[T: ClassTag, D: ClassTag]()(
implicit ev: TensorNumeric[T], ev2: TensorNumeric[D]): Digamma[T, D] = new Digamma()
}