mirror of
https://github.com/apple/swift.git
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57a4553832
This implements the protocols and static functions proposed in SE-0246, plus some initial test coverage. It also has some rough accompanying cleanup of tgmath. It does not include the globals (on scalars or SIMD types) nor does it deprecate much in tgmath.h.
248 lines
11 KiB
Swift
248 lines
11 KiB
Swift
//===--- tgmath.swift.gyb -------------------------------------*- swift -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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// -*- swift -*-
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// RUN: %empty-directory(%t)
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// RUN: %gyb %s -o %t/tgmath.swift
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// RUN: %line-directive %t/tgmath.swift -- %target-build-swift %t/tgmath.swift -o %t/a.out
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// RUN: %target-codesign %t/a.out
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// RUN: %line-directive %t/tgmath.swift -- %target-run %t/a.out
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// REQUIRES: executable_test
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#if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
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import Darwin.C.tgmath
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#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
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import Glibc
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#elseif os(Windows)
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import MSVCRT
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#else
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#error("Unsupported platform")
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#endif
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#if (arch(i386) || arch(x86_64)) && !os(Windows)
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typealias TestLiteralType = Float80
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#else
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typealias TestLiteralType = Double
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#endif
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import StdlibUnittest
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let MathTests = TestSuite("TGMath")
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func expectEqualWithTolerance<T>(_ expected: TestLiteralType, _ actual: T,
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ulps allowed: T = 3,
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file: String = #file, line: UInt = #line)
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where T: BinaryFloatingPoint {
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if actual == T(expected) || actual.isNaN && expected.isNaN {
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return
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}
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// Compute error in ulp, compare to tolerance.
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let absoluteError = T(abs(TestLiteralType(actual) - expected))
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let ulpError = absoluteError / T(expected).ulp
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expectTrue(ulpError <= allowed,
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"\(actual) != \(expected) as \(T.self)" +
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"\n \(ulpError)-ulp error exceeds \(allowed)-ulp tolerance.",
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file: file, line: line)
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}
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%{
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unary = [
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'acos', 'asin', 'atan',
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'cos', 'sin', 'tan',
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'acosh', 'asinh', 'atanh',
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'cosh', 'sinh', 'tanh',
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'exp', 'exp2', 'expm1',
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'log', 'log2', 'log1p', 'log10', 'logb',
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'fabs', 'cbrt', 'sqrt',
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'erf', 'erfc',
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'tgamma',
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'ceil', 'floor', 'nearbyint', 'rint', 'trunc',
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]
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binary = [
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'atan2', 'hypot', 'pow', 'fmod', 'copysign', 'nextafter',
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'fdim', 'fmin', 'fmax'
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]
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}%
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internal protocol TGMath: BinaryFloatingPoint {
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%for f in unary:
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static func _${f}(_ x: Self) -> Self
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%end
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%for f in binary:
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static func _${f}(_ x: Self, _ y: Self) -> Self
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%end
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static func _remquo(_ x: Self, _ y: Self) -> (Self, Int)
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static func _fma(_ x: Self, _ y: Self, _ z: Self) -> Self
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#if !os(Windows)
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static func _lgamma(_ x: Self) -> (Self, Int)
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#endif
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static func _modf(_ x: Self) -> (Self, Self)
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static func _scalbn(_ x: Self, _ n: Int) -> Self
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static func _frexp(_ x: Self) -> (Self, Int)
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static func _ilogb(_ x: Self) -> Int
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}
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internal extension TGMath {
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static func allTests() {
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/* Default tolerance is 3 ulps unless specified otherwise. It's OK to relax
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* this as needed for new platforms, as these tests are *not* intended to
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* validate the math library--they are only intended to check that the
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* Swift bindings are calling the right functions in the math library. */
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expectEqualWithTolerance(1.1863995522992575361931268186727044683, Self._acos(0.375))
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expectEqualWithTolerance(0.3843967744956390830381948729670469737, Self._asin(0.375))
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expectEqualWithTolerance(0.3587706702705722203959200639264604997, Self._atan(0.375))
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expectEqualWithTolerance(0.9305076219123142911494767922295555080, Self._cos(0.375))
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expectEqualWithTolerance(0.3662725290860475613729093517162641571, Self._sin(0.375))
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expectEqualWithTolerance(0.3936265759256327582294137871012180981, Self._tan(0.375))
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expectEqualWithTolerance(0.4949329230945269058895630995767185785, Self._acosh(1.125))
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expectEqualWithTolerance(0.9670596312833237113713762009167286709, Self._asinh(1.125))
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expectEqualWithTolerance(0.7331685343967135223291211023213964500, Self._atanh(0.625))
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expectEqualWithTolerance(1.0711403467045867672994980155670160493, Self._cosh(0.375))
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expectEqualWithTolerance(0.3838510679136145687542956764205024589, Self._sinh(0.375))
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expectEqualWithTolerance(0.3583573983507859463193602315531580424, Self._tanh(0.375))
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expectEqualWithTolerance(1.4549914146182013360537936919875185083, Self._exp(0.375))
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expectEqualWithTolerance(1.2968395546510096659337541177924511598, Self._exp2(0.375))
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expectEqualWithTolerance(0.4549914146182013360537936919875185083, Self._expm1(0.375))
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expectEqualWithTolerance(-0.980829253011726236856451127452003999, Self._log(0.375))
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expectEqualWithTolerance(-1.415037499278843818546261056052183491, Self._log2(0.375))
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expectEqualWithTolerance(0.3184537311185346158102472135905995955, Self._log1p(0.375))
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expectEqualWithTolerance(-0.425968732272281148346188780918363771, Self._log10(0.375))
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expectEqual(-2, Self._logb(0.375))
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expectEqual(0.375, Self._fabs(-0.375))
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expectEqualWithTolerance(0.7211247851537041911608191553900547941, Self._cbrt(0.375))
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expectEqualWithTolerance(0.6123724356957945245493210186764728479, Self._sqrt(0.375))
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expectEqualWithTolerance(0.4041169094348222983238250859191217675, Self._erf(0.375))
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expectEqualWithTolerance(0.5958830905651777016761749140808782324, Self._erfc(0.375))
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expectEqualWithTolerance(2.3704361844166009086464735041766525098, Self._tgamma(0.375))
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#if !os(Windows)
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expectEqualWithTolerance( -0.11775527074107877445136203331798850, Self._lgamma(1.375).0, ulps: 16)
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expectEqual(1, Self._lgamma(1.375).1)
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#endif
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expectEqual(1, Self._ceil(0.375))
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expectEqual(0, Self._floor(0.375))
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expectEqual(0, Self._nearbyint(0.375))
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expectEqual(0, Self._rint(0.375))
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expectEqual(0, Self._trunc(0.375))
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expectEqual(0, Self._ceil(-0.625))
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expectEqual(-1, Self._floor(-0.625))
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expectEqual(-1, Self._nearbyint(-0.625))
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expectEqual(-1, Self._rint(-0.625))
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expectEqual(0, Self._trunc(-0.625))
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expectEqual(0, Self._ceil(-0.5))
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expectEqual(-1, Self._floor(-0.5))
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expectEqual(-0.0, Self._nearbyint(-0.5))
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expectEqual(-0.0, Self._rint(-0.5))
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expectEqual(0, Self._trunc(-0.5))
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expectEqualWithTolerance(0.54041950027058415544357836460859991, Self._atan2(0.375, 0.625))
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expectEqualWithTolerance(0.72886898685566255885926910969319788, Self._hypot(0.375, 0.625))
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expectEqualWithTolerance(0.54171335479545025876069682133938570, Self._pow(0.375, 0.625))
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expectEqual(0.375, Self._fmod(1, 0.625))
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expectEqual(-0.375, Self._copysign(0.375, -0.625))
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expectEqual(Self(0.375).nextUp, Self._nextafter(0.375, 1))
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expectEqual(Self(0.375).nextDown, Self._nextafter(0.375, 0))
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expectEqual(0, Self._fdim(0.375, 0.625))
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expectEqual(0.375, Self._fmin(0.375, 0.625))
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expectEqual(0.625, Self._fmax(0.375, 0.625))
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expectEqual(-Self.ulpOfOne*Self.ulpOfOne,
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Self._fma(1 + .ulpOfOne, 1 - .ulpOfOne, -1))
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expectEqual((1.0, 0.125), Self._modf(1.125))
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expectEqual(2.5, Self._scalbn(0.625, 2))
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expectEqual((0.625, 2), Self._frexp(2.5))
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expectEqual(1, Self._ilogb(2.5))
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#if os(Linux) && arch(x86_64)
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// double-precision remquo is broken in the glibc in 14.04. Disable this
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// test for all Linux in the short-term to un-FAIL the build. SR-7234.
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if Self.significandBitCount != 52 {
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expectEqual(-0.25, Self._remquo(16, 0.625).0)
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expectEqual(2, Self._remquo(16, 0.625).1 & 7)
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}
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#else
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expectEqual(-0.25, Self._remquo(16, 0.625).0)
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expectEqual(2, Self._remquo(16, 0.625).1 & 7)
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#endif
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}
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}
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%for T in ['Float', 'Double', 'CGFloat', 'Float80']:
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% if T == 'Float80':
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#if (arch(i386) || arch(x86_64)) && !os(Windows)
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% elif T == 'CGFloat':
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#if canImport(CoreGraphics)
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import CoreGraphics
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% end
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extension ${T}: TGMath {
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#if os(macOS) || os(iOS) || os(tvOS) || os(watchOS)
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% Module = 'CoreGraphics' if T == 'CGFloat' else 'Darwin'
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% for f in unary:
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static func _${f}(_ x: ${T}) -> ${T} { return ${Module}.${f}(x) }
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% end
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%for f in binary:
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static func _${f}(_ x: ${T}, _ y: ${T}) -> ${T} { return ${Module}.${f}(x, y) }
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%end
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static func _remquo(_ x: ${T}, _ y: ${T}) -> (${T}, Int) { return ${Module}.remquo(x, y) }
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static func _fma(_ x: ${T}, _ y: ${T}, _ z: ${T}) -> ${T} { return ${Module}.fma(x, y, z) }
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static func _lgamma(_ x: ${T}) -> (${T}, Int) { return ${Module}.lgamma(x) }
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static func _modf(_ x: ${T}) -> (${T}, ${T}) { return ${Module}.modf(x) }
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static func _scalbn(_ x: ${T}, _ n: Int) -> ${T} { return ${Module}.scalbn(x, n) }
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static func _frexp(_ x: ${T}) -> (${T}, Int) { return ${Module}.frexp(x) }
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static func _ilogb(_ x: ${T}) -> Int { return ${Module}.ilogb(x) }
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#elseif os(Linux) || os(FreeBSD) || os(PS4) || os(Android) || os(Cygwin) || os(Haiku)
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% for f in unary:
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static func _${f}(_ x: ${T}) -> ${T} { return Glibc.${f}(x) }
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% end
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%for f in binary:
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static func _${f}(_ x: ${T}, _ y: ${T}) -> ${T} { return Glibc.${f}(x, y) }
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%end
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static func _remquo(_ x: ${T}, _ y: ${T}) -> (${T}, Int) { return Glibc.remquo(x, y) }
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static func _fma(_ x: ${T}, _ y: ${T}, _ z: ${T}) -> ${T} { return Glibc.fma(x, y, z) }
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static func _lgamma(_ x: ${T}) -> (${T}, Int) { return Glibc.lgamma(x) }
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static func _modf(_ x: ${T}) -> (${T}, ${T}) { return Glibc.modf(x) }
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static func _scalbn(_ x: ${T}, _ n: Int) -> ${T} { return Glibc.scalbn(x, n) }
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static func _frexp(_ x: ${T}) -> (${T}, Int) { return Glibc.frexp(x) }
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static func _ilogb(_ x: ${T}) -> Int { return Glibc.ilogb(x) }
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#elseif os(Windows)
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% for f in unary:
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static func _${f}(_ x: ${T}) -> ${T} { return MSVCRT.${f}(x) }
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% end
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%for f in binary:
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static func _${f}(_ x: ${T}, _ y: ${T}) -> ${T} { return MSVCRT.${f}(x, y) }
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%end
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static func _remquo(_ x: ${T}, _ y: ${T}) -> (${T}, Int) { return MSVCRT.remquo(x, y) }
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static func _fma(_ x: ${T}, _ y: ${T}, _ z: ${T}) -> ${T} { return MSVCRT.fma(x, y, z) }
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static func _modf(_ x: ${T}) -> (${T}, ${T}) { return MSVCRT.modf(x) }
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static func _scalbn(_ x: ${T}, _ n: Int) -> ${T} { return MSVCRT.scalbn(x, n) }
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static func _frexp(_ x: ${T}) -> (${T}, Int) { return MSVCRT.frexp(x) }
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static func _ilogb(_ x: ${T}) -> Int { return MSVCRT.ilogb(x) }
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#endif
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}
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MathTests.test("${T}") {
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${T}.allTests()
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% if T in ['Double','CGFloat']:
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// Functions that are defined only for Double and CGFloat
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expectEqualWithTolerance(0.99750156206604, j0(0.1), ulps: 16)
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expectEqualWithTolerance(0.049937526036242, j1(0.1), ulps: 16)
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expectEqualWithTolerance(1.2229926610356451e-22, jn(11, 0.1), ulps: 16)
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expectEqualWithTolerance(-1.5342386513503667, y0(0.1), ulps: 16)
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expectEqualWithTolerance(-6.458951094702027, y1(0.1), ulps: 16)
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expectEqualWithTolerance(-2.3662012944869576e+20, yn(11, 0.1), ulps: 16)
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% end
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}
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% if T in ['CGFloat', 'Float80']:
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#endif
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% end
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%end
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runAllTests()
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