com.intel.analytics.bigdl.utils.HashFunc.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.utils

import scala.util.hashing.MurmurHash3

object HashFunc {
  def stringHashBucket32(string: String, buckets: Int): Int = {
    MurmurHash3.stringHash(string) % buckets match {
      case v if v < 0 => v + buckets
      case v if v >= 0 => v
    }
  }
}