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//===--- BinaryFloatingPointConversionFromBinaryInteger.swift -------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
// This test checks performance of generic binary floating-point conversion from
// a binary integer.
import TestsUtils
#if swift(>=4.2)
public let benchmarks = [
BenchmarkInfo(
name: "BinaryFloatingPointConversionFromBinaryInteger",
runFunction: run_BinaryFloatingPointConversionFromBinaryInteger,
tags: [.validation, .algorithm]
),
]
#else
public let benchmarks: [BenchmarkInfo] = []
#endif
struct MockBinaryInteger<T : BinaryInteger> {
var _value: T
init(_ value: T) {
_value = value
}
}
extension MockBinaryInteger : CustomStringConvertible {
var description: String {
return _value.description
}
}
extension MockBinaryInteger : ExpressibleByIntegerLiteral {
init(integerLiteral value: T.IntegerLiteralType) {
_value = T(integerLiteral: value)
}
}
extension MockBinaryInteger : Comparable {
static func < (lhs: MockBinaryInteger<T>, rhs: MockBinaryInteger<T>) -> Bool {
return lhs._value < rhs._value
}
static func == (
lhs: MockBinaryInteger<T>, rhs: MockBinaryInteger<T>
) -> Bool {
return lhs._value == rhs._value
}
}
extension MockBinaryInteger : Hashable {
func hash(into hasher: inout Hasher) {
hasher.combine(_value)
}
}
extension MockBinaryInteger : BinaryInteger {
static var isSigned: Bool {
return T.isSigned
}
init<Source>(_ source: Source) where Source : BinaryFloatingPoint {
_value = T(source)
}
init?<Source>(exactly source: Source) where Source : BinaryFloatingPoint {
guard let result = T(exactly: source) else { return nil }
_value = result
}
init<Source>(_ source: Source) where Source : BinaryInteger {
_value = T(source)
}
init?<Source>(exactly source: Source) where Source : BinaryInteger {
guard let result = T(exactly: source) else { return nil }
_value = result
}
init<Source>(truncatingIfNeeded source: Source) where Source : BinaryInteger {
_value = T(truncatingIfNeeded: source)
}
init<Source>(clamping source: Source) where Source : BinaryInteger {
_value = T(clamping: source)
}
var magnitude: MockBinaryInteger<T.Magnitude> {
return MockBinaryInteger<T.Magnitude>(_value.magnitude)
}
var words: T.Words {
return _value.words
}
var bitWidth: Int {
return _value.bitWidth
}
var trailingZeroBitCount: Int {
return _value.trailingZeroBitCount
}
func isMultiple(of other: MockBinaryInteger<T>) -> Bool {
return _value.isMultiple(of: other._value)
}
static func + (
lhs: MockBinaryInteger<T>, rhs: MockBinaryInteger<T>
) -> MockBinaryInteger<T> {
return MockBinaryInteger(lhs._value + rhs._value)
}
static func += (lhs: inout MockBinaryInteger<T>, rhs: MockBinaryInteger<T>) {
lhs._value += rhs._value
}
static func - (
lhs: MockBinaryInteger<T>, rhs: MockBinaryInteger<T>
) -> MockBinaryInteger<T> {
return MockBinaryInteger(lhs._value - rhs._value)
}
static func -= (lhs: inout MockBinaryInteger<T>, rhs: MockBinaryInteger<T>) {
lhs._value -= rhs._value
}
static func * (
lhs: MockBinaryInteger<T>, rhs: MockBinaryInteger<T>
) -> MockBinaryInteger<T> {
return MockBinaryInteger(lhs._value * rhs._value)
}
static func *= (lhs: inout MockBinaryInteger<T>, rhs: MockBinaryInteger<T>) {
lhs._value *= rhs._value
}
static func / (
lhs: MockBinaryInteger<T>, rhs: MockBinaryInteger<T>
) -> MockBinaryInteger<T> {
return MockBinaryInteger(lhs._value / rhs._value)
}
static func /= (lhs: inout MockBinaryInteger<T>, rhs: MockBinaryInteger<T>) {
lhs._value /= rhs._value
}
static func % (
lhs: MockBinaryInteger<T>, rhs: MockBinaryInteger<T>
) -> MockBinaryInteger<T> {
return MockBinaryInteger(lhs._value % rhs._value)
}
static func %= (lhs: inout MockBinaryInteger<T>, rhs: MockBinaryInteger<T>) {
lhs._value %= rhs._value
}
static func &= (lhs: inout MockBinaryInteger<T>, rhs: MockBinaryInteger<T>) {
lhs._value &= rhs._value
}
static func |= (lhs: inout MockBinaryInteger<T>, rhs: MockBinaryInteger<T>) {
lhs._value |= rhs._value
}
static func ^= (lhs: inout MockBinaryInteger<T>, rhs: MockBinaryInteger<T>) {
lhs._value ^= rhs._value
}
static prefix func ~ (x: MockBinaryInteger<T>) -> MockBinaryInteger<T> {
return MockBinaryInteger(~x._value)
}
static func >>= <RHS>(
lhs: inout MockBinaryInteger<T>, rhs: RHS
) where RHS : BinaryInteger {
lhs._value >>= rhs
}
static func <<= <RHS>(
lhs: inout MockBinaryInteger<T>, rhs: RHS
) where RHS : BinaryInteger {
lhs._value <<= rhs
}
}
#if swift(>=4.2)
@inline(never)
public func run_BinaryFloatingPointConversionFromBinaryInteger(_ n: Int) {
var xs = [Double]()
xs.reserveCapacity(n)
for _ in 1...n {
var x = 0 as Double
for i in 0..<2000 {
x += Double._convert(from: MockBinaryInteger(getInt(i))).value
}
xs.append(x)
}
check(xs[getInt(0)] == 1999000)
}
#endif
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