37 lines
1.4 KiB
Swift
37 lines
1.4 KiB
Swift
// Copyright 2018 Google Inc. All rights reserved.
|
|
//
|
|
// 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.
|
|
|
|
/// Parameters that determine the mapping of quantized values to real values. Quantized values can
|
|
/// be mapped to float values using the following conversion:
|
|
/// `realValue = scale * (quantizedValue - zeroPoint)`.
|
|
public struct QuantizationParameters {
|
|
|
|
/// Difference between real values corresponding to consecutive quantized values differing by 1.
|
|
/// For example, the range of quantized values for `UInt8` data type is [0, 255].
|
|
public let scale: Float
|
|
|
|
/// Quantized value that corresponds to the real 0 value.
|
|
public let zeroPoint: Int
|
|
|
|
/// Creates a new quantization parameters instance.
|
|
///
|
|
/// - Parameters:
|
|
/// - scale: Scale value for asymmetric quantization.
|
|
/// - zeroPoint: Zero point for asymmetric quantization.
|
|
init(scale: Float, zeroPoint: Int) {
|
|
self.scale = scale
|
|
self.zeroPoint = zeroPoint
|
|
}
|
|
}
|