| //===--- StrToInt.swift ---------------------------------------------------===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 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 String to Int conversion. |
| // It is reported to be very slow: <rdar://problem/17255477> |
| import TestsUtils |
| |
| public let StrToInt = BenchmarkInfo( |
| name: "StrToInt", |
| runFunction: run_StrToInt, |
| tags: [.validation, .api, .String]) |
| |
| @inline(never) |
| public func run_StrToInt(_ N: Int) { |
| // 64 numbers from -500_000 to 500_000 generated randomly |
| let input = ["-237392", "293715", "126809", "333779", "-362824", "144198", |
| "-394973", "-163669", "-7236", "376965", "-400783", "-118670", |
| "454728", "-38915", "136285", "-448481", "-499684", "68298", |
| "382671", "105432", "-38385", "39422", "-267849", "-439886", |
| "292690", "87017", "404692", "27692", "486408", "336482", |
| "-67850", "56414", "-340902", "-391782", "414778", "-494338", |
| "-413017", "-377452", "-300681", "170194", "428941", "-291665", |
| "89331", "329496", "-364449", "272843", "-10688", "142542", |
| "-417439", "167337", "96598", "-264104", "-186029", "98480", |
| "-316727", "483808", "300149", "-405877", "-98938", "283685", |
| "-247856", "-46975", "346060", "160085",] |
| let ref_result = 517492 |
| func DoOneIter(_ arr: [String]) -> Int { |
| var r = 0 |
| for n in arr { |
| r += Int(n)! |
| } |
| if r < 0 { |
| r = -r |
| } |
| return r |
| } |
| var res = Int.max |
| for _ in 1...1000*N { |
| res = res & DoOneIter(input) |
| } |
| CheckResults(res == ref_result) |
| } |
