All Versions
12
Latest Version
Avg Release Cycle
88 days
Latest Release
362 days ago

Changelog History
Page 1

  • v1.20 Changes

    October 26, 2020

    ๐Ÿ”„ Changes for QuantLib 1.20:

    QuantLib 1.20 includes 24 pull requests from several contributors.

    The most notable changes are included below. A detailed list of changes is available in ChangeLog.txt and at https://github.com/lballabio/QuantLib/milestone/16?closed=1.

    Portability

    • ๐Ÿ‘Œ Support for Visual C++ 2012 is being deprecated. It will be dropped after the next release in order to enable use of C++11 features.
    • ๐Ÿ‘‰ It is now possible to opt into using std::tuple instead of boost::tuple when the compiler allows it. The default is still to use the Boost implementation. The feature can be enabled by uncommenting the QL_USE_STD_TUPLE macro in ql/userconfig.hpp on Visual C++ or by passing the --enable-std-tuple switch to ./configure on other systems. The --enable-std-tuple switch is also implied by --enable-std-classes. (Thanks to Joseph Wang.)

    Instruments

    • โž• Added mixing-factor parameter to Heston finite-differences barrier, rebate and double-barrier engines (thanks to Jack Gillett).
    • โž• Added a few additional results to Black swaption engine and to analytic European option engine (thanks to Peter Caspers and Marcin Rybacki).
    • ๐Ÿ‘Œ Improved calculation of spot date for vanilla swap around holidays (thanks to Paul Giltinan).
    • โž• Added ex-coupon feature to amortizing bonds, callable bonds and convertible bonds.
    • โž• Added optional first-coupon day counter to fixed-rate bonds (thanks to Jacob Lee-Howes).

    Math

    • โž• Added convenience classes LogCubic and LogMixedLinearCubic hiding a few default parameters (thanks to Andrea Maffezzoli).

    Models

    • โž• Added control variate based on asymptotic expansion for the Heston model (thanks to Klaus Spanderen).

    Date/time

    • โž• Added missing Hong Kong holiday (thanks to GitHub user CarrieMY).
    • โž• Added a couple of one-off closing days to the Romanian calendar.
    • โž• Added a one-off holiday to South Korean calendar (thanks to GitHub user fayce66).
    • โž• Added a missing holiday to Turkish calendar (thanks to Berat Postalcioglu).

    ๐Ÿ“š Documentation

    • โž• Added basic documentation to optimization methods (thanks to GitHub user martinbrose).

    ๐Ÿ—„ Deprecated features

    • ๐Ÿ”‹ Features deprecate in version 1.16 were removed: a constructor of the FdmOrnsteinUhlenbeckOp class and a constructor of the SwaptionVolatilityMatrix class.
  • v1.19 Changes

    July 20, 2020

    ๐Ÿ”„ Changes for QuantLib 1.19:

    QuantLib 1.19 includes 40 pull requests from several contributors.

    The most notable changes are included below. A detailed list of changes is available in ChangeLog.txt and at https://github.com/lballabio/QuantLib/milestone/15?closed=1.

    Portability

    • ๐Ÿ‘Œ Support for Visual C++ 2012 is being deprecated. It will be dropped around the end of 2020 or the beginning of 2021 in order to enable use of C++11 features.
    • Avoided use in Makefiles of functions only available to GNU Make (thanks to GitHub user UnitedMarsupials for the heads-up).

    ๐Ÿ— Build

    • ๐Ÿ— Automated builds on Travis and GitHub Actions were extended. We now have a build for Mac OS X, as well as a few builds that run a number of checks on the code (including clang-tidy) and automatically open pull requests with fixes.

    Term structures

    • โž• Added options for iterative bootstrap to widen the search domain or to keep the best result upon failure (thanks to Francis Duffy).
    • โž• Added flat-extrapolation option to fitted bond curves (thanks to Peter Caspers).

    Instruments

    • โž• Added finite-difference pricing engine for equity options under the Cox-Ingersoll-Ross process (thanks to Lew Wei Hao).
    • โž• Added Heston engine based on exponentially-fitted Laguerre quadrature rule (thanks to Klaus Spanderen).
    • โž• Added Monte Carlo pricing engines for lookback options (thanks to Lew Wei Hao).
    • โž• Added Monte Carlo pricing engine for double-barrier options (thanks to Lew Wei Hao).
    • โž• Added analytic pricing engine for equity options under the Vasicek model (thanks to Lew Wei Hao).
    • The Bond::yield method can now specify a guess and whether the passed price is clean or dirty (thanks to Francois Botha).

    Models

    • ๐Ÿ‘Œ Improved grid scaling for FDM Heston SLV calibration, and fixed drift and diffusion for Heston SLV process (thanks to Klaus Spanderen and Peter Caspers).
    • โž• Added mixing factor to Heston SLV process (thanks to Lew Wei Hao).

    Math

    • ๐Ÿ‘Œ Improved nodes/weights for the exponentially fitted Laguerre quadrature rule and added sine and cosine quadratures (thanks to Klaus Spanderen).

    Date/time

    • ๐Ÿ‘Œ Improved performance of the Calendar class (thanks to Leonardo Arcari).
    • โšก๏ธ Updated holidays for Indian and Russian calendars (thanks to Alexey Indiryakov).
    • โž• Added missing All Souls Day holiday to Mexican calendar (thanks to GitHub user phil-zxx for the heads-up).
    • โช Restored New Year's Eve holiday to Eurex calendar (thanks to Joshua Engelman).

    ๐Ÿ—„ Deprecated features

    • ๐Ÿ”‹ Features deprecate in version 1.15 were removed: constructors of inflation swap helpers, inflation-based pricing engines and inflation coupon pricers that didn't take a nominal term structure.
    • ๐Ÿ—„ The constructor of BMAIndex taking a calendar was deprecated.
    • ๐Ÿ—„ The constructors of several interest-rate term structures taking jumps without a reference date were deprecated.
    • ๐Ÿ—„ The CurveDependentStepCondition class and related typedefs were deprecated.
    • ๐Ÿ—„ The constructor of BlackCalibrationHelper taking an interest-rate structure was deprecated.
    • ๐Ÿ—„ The constructors of several inflation curves taking a nominal curve were deprecated. The nominal curve should now be passed to the used coupon pricers.
  • v1.18 Changes

    March 23, 2020

    ๐Ÿ”„ Changes for QuantLib 1.18:

    QuantLib 1.18 includes 34 pull requests from several contributors.

    The most notable changes are included below. A detailed list of changes is available in ChangeLog.txt and at https://github.com/lballabio/QuantLib/milestone/14?closed=1.

    Portability

    • ๐Ÿš€ As announced in the past release, support of Visual C++ 2010 is dropped. Also, we'll probably deprecate Visual C++ 2012 in the next release in order to drop it around the end of 2020.

    ๐Ÿ— Build

    Term structures

    • A new GlobalBootstrap class can now be used with PiecewiseYieldCurve and other bootstrapped curves (thanks to Peter Caspers). It allows to produce curves close to Bloomberg's.
    • The experimental SofrFutureRateHelper class and its parent OvernightIndexFutureRateHelper can now choose to use either compounding or averaging, in order to accommodate different conventions for 1M and 3M SOFR futures (thanks to GitHub user tani3010).
    • The FraRateHelper class has new constructors that take IMM start / end offsets (thanks to Peter Caspers).
    • ๐Ÿšš It is now possible to pass explicit minimum and maximum values to the IterativeBootstrap class. The accuracy parameter was also moved to the same class; passing it to the curve constructor is now deprecated.

    Instruments

    • โฑ It is now possible to build fixed-rate bonds with an arbitrary schedule, even without a regular tenor (thanks to Steven Van Haren).

    Models

    • It is now possible to use normal volatilities to calibrate a short-rate model over caps.

    Date/time

    • The Austrian calendar was added (thanks to Benjamin Schwendinger).
    • ๐Ÿ›  The German calendar incorrectly listed December 31st as a holiday; this is now fixed (thanks to Prasad Somwanshi).
    • โšก๏ธ Chinese holidays were updated for 2020 and the coronavirus event (thanks to Cheng Li).
    • โšก๏ธ South Korea holidays were updated for 2016-2020 (thanks to GitHub user fayce66).
    • ๐Ÿ—„ In the calendar class, holidayList is now an instance method; the static version is deprecated. The businessDayList method was also added. (Thanks to Piotr Siejda.)
    • ๐Ÿ›  A bug in the 30/360 German day counter was fixed (thanks to Kobe Young for the heads-up).

    โšก๏ธ Optimizers

    • โšก๏ธ The differential evolution optimizer was updated (thanks to Peter Caspers).

    Currencies

    • โž• Added Kazakstani Tenge to currencies (thanks to Jonathan Barber).

    ๐Ÿ—„ Deprecated features

    • ๐Ÿ”‹ Features deprecate in version 1.14 were removed: one of the constructors of the BSMOperator class, the whole OperatorFactory class, and the typedef CalibrationHelper which was used to alias the BlackCalibrationHelper class.
    • ๐Ÿ—„ The CalibrationHelperBase class is now called CalibrationHelper. The old name remains as a typedef but is deprecated.
    • ๐Ÿ—„ The overload of CalibratedModel::calibrate and CalibratedModel::value taking a vector of BlackCalibrationHelpers are deprecated in favor of the ones taking a vector of CalibrationHelpers.
    • ๐Ÿ—„ The static method Calendar::holidayList is deprecated in favor of the instance method by the same name.
    • ๐Ÿ—„ The constructors of PiecewiseDefaultCurve and PiecewiseYieldCurve taking an accuracy parameter are deprecated in favor of passing the parameter to an instance of the bootstrap class.
    • ๐Ÿ—„ The constructors of BondHelper and derived classes taking a boolean flag to choose between clean and dirty price are deprecated in favor of the ones taking a Bond::Price::Type argument. The useCleanPrice method is also deprecated in favor of priceType.

    ๐Ÿ›  Thanks go also to Ralf Konrad, Klaus Spanderen, Carlos Fidel Selva Ochoa, F. Eugene Aumson and Francois Botha for smaller fixes, enhancements, and bug reports.

  • v1.17 Changes

    December 03, 2019

    ๐Ÿ”„ Changes for QuantLib 1.17:

    QuantLib 1.17 includes 30 pull requests from several contributors.

    The most notable changes are included below. A detailed list of changes is available in ChangeLog.txt and at https://github.com/lballabio/QuantLib/milestone/13?closed=1.

    Portability

    • ๐Ÿš€ As of this release, support of Visual C++ 2010 is deprecated; it will be dropped in next release. Also, we'll probably deprecate Visual C++ 2012 in one of the next few releases in order to drop it around the end of 2020.

    ๐Ÿ”ง Configuration

    • A new function compiledBoostVersion() is available, (thanks to Andrew Smith). It returns the version of Boost used to compile the library, as reported by the BOOST_VERSION macro. This can help avoid linking the library with user code compiled with a different Boost version (which can result in erratic behavior).
    • ๐Ÿ”ง It is now possible to specify at run time whether to use indexed coupons (thanks to Ralf Konrad). The compile-time configuration is still used as a default, but it is also possible to call either of the static methods IborCoupon::createAtParCoupons or IborCoupon::createIndexedCoupons to specify your preference. For the time being, the methods above must necessarily be called before creating any instance of IborCoupon or of its derived classes.

    ๐Ÿ— Build

    • As of this version, the names of the binaries produced by the included Visual C++ solution no longer contain the toolset version (e.g., v142).

    Instruments

    • โž• Added ex-coupon functionality to floating-rate bonds (thanks to Steven Van Haren).
    • ๐Ÿšš The inner structure Callability::Price was moved to the class Bond and can now be used to specify what kind of price was passed to the BondFunctions::yield method (thanks to Francois Botha).
    • It is now possible to use a par-coupon approximation for FRAs like the one used in Ibor coupons (thanks to Peter Caspers).

    Pricing engines

    • โž• Added escrowed dividend model to the new-style FD engine for DividendVanillaOption (thanks to Klaus Spanderen).
    • Black cap/floor engine now also returns caplet deltas (thanks to Wojciech Slusarski).

    Term structures

    • OIS rate helpers can now choose whether to use as a pillar for the bootstrap either their maturity date or the end date of the last underlying fixing. This provides an alternative if the bootstrap should fail. (Thanks to Drew Saunders for the heads-up.)
    • Instances of the FittedBondDiscountCurve class now behave as simple evaluators (that is, they use the given paramters without performing root-solving) when the maxIterations parameter is set to 0. (Thanks to Nick Firoozye for the heads-up.)

    Date/time

    • โž• Added a few special closing days to the US government bond calendar (thanks to Mike DelMedico).
    • ๐Ÿ›  Fixed an incorrect 2019 holiday in Chinese calendar (thanks to Cheng Li).
    • โž• Added missing holiday to Swedish calendar (thanks to GitHub users periculus and tonyzhipengzhou).

    ๐Ÿ—„ Deprecated features

    • ๐Ÿ—„ The classes FDEuropeanEngine, FDAmericanEngine, FDBermudanEngine, FDDividendEuropeanEngine, FDDividendEuropeanEngineShiftScale, FDDividendAmericanEngine, FDDividendAmericanEngineShiftScale are now deprecated. They are superseded by FdBlackScholesVanillaEngine.

    ๐Ÿ›  Thanks go also to Joel King, Kai Striega, Francis Duffy, Tom Anderson and GitHub user lab4quant for smaller fixes, enhancements, and bug reports.

  • v1.16 Changes

    August 05, 2019

    ๐Ÿ”„ Changes for QuantLib 1.16:

    QuantLib 1.16 includes 34 pull requests from several contributors.

    The most notable changes are included below. A detailed list of changes is available in ChangeLog.txt and at https://github.com/lballabio/QuantLib/milestone/12?closed=1.

    Portability

    • โž• Added support for Visual Studio 2019 (thanks to Paul Giltinan).

    ๐Ÿ”ง Configuration

    • ๐Ÿš€ As announced in past release, the compile-time switch to force non-negative rates was removed.

    Pricing engines

    • โž• Added constant elasticity of variance (CEV) pricing engines for vanilla options. Analytic, FD and SABR engines are available (thanks to Klaus Spanderen).
    • โž• Added quanto pricing functionality to a couple of FD engines for DividendVanillaOption (thanks to Klaus Spanderen).

    Cash flows

    • Digital coupons can now optionally return the value of the naked option (thanks to Peter Caspers).

    Date/time

    • โšก๏ธ Updated Taiwan holidays for 2019 (thanks to Hank Liu).
    • โž• Added two newly announced holidays to Chinese calendar (thanks to Cheng Li).
    • โšก๏ธ Updated Japan calendar (thanks to Eisuke Tani).
    • ๐Ÿ›  Fixed New Year's day adjustment for Canadian calendar (thanks to Roy Zywina).
    • โž• Added a couple of exceptions for UK bank holidays (thanks to GitHub user Vililikku for the heads-up).
    • โž• Added French calendar (thanks to GitHub user NJeanray).
    • โž• Added public methods to expose a calendar's added and removed holidays (thanks to Francois Botha).
    • ๐Ÿ‘ Allow the stub date of a schedule to equal the maturity.

    ๐Ÿ—„ Deprecated features

    • ๐Ÿ—„ Deprecated a constructor of the SwaptionVolatilityMatrix class that didn't take a calendar.
    • โœ‚ Removed typedefs GammaDistribution, ChiSquareDistribution, NonCentralChiSquareDistribution and InverseNonCentralChiSquareDistribution, deprecated in version 1.12. Use CumulativeGammaDistribution, CumulativeChiSquareDistribution, NonCentralCumulativeChiSquareDistribution and InverseNonCentralCumulativeChiSquareDistribution instead.
    • โœ‚ Removed Actual365NoLeap class, deprecated in version 1.11. It was folded into Actual365Fixed.

    Term structures

    • Take payment days into account when calculating the nodes of a bootstrapped curve based on overnight swaps.
  • v1.15 Changes

    February 19, 2019

    ๐Ÿ”„ Changes for QuantLib 1.15:

    QuantLib 1.15 includes 32 pull requests from several contributors.

    The most notable changes are included below. A detailed list of changes is available in ChangeLog.txt and at https://github.com/lballabio/QuantLib/milestone/11?closed=1.

    Portability

    • ๐Ÿš€ This release drops support for Boost version 1.43 to 1.47; the minimum required version is now Boost 1.48, released in 2011.
    • โž• Added a .clang-format file to the repository. The format is not going to be enforced, but the style file is provided as a convenience in case you want to format new code according to the conventions of the library.
    • โšก๏ธ boost::function, boost::bind and a few related classes and functions were imported into the new namespace QuantLib::ext. This allows them to be conditionally replaced with their std:: versions (see the "opt-in features" section below). The default is still to use the Boost implementation. Client code using the boost namespace explicitly doesn't need to be updated.

    Models

    • โž• Added an experimental volatility basis model for caplet and swaptions (thanks to Sebastian Schlenkrich).

    Pricing engines

    • It is now possible to specify polynomial order and type when creating a MCAmericanBasketEngine instance (thanks to Klaus Spanderen).

    Term structures

    • ๐Ÿ—„ Inflation curves used to store the nominal curve used during their construction. This is still supported for backward compatibility, but is deprecated. You should instead pass the nominal curve explicitly to objects that need one (e.g., inflation helpers, engines, or cashflow pricers).
    • โž• Added experimental helpers to bootstrap an interest-rate curve on SOFR futures (thanks to Roy Zywina).

    Indexes

    • It is now possible to choose the fixing calendar for the BMA index (thanks to Jan Ladislav Dussek).

    Cash flows

    • ๐Ÿ›  Fixed broken observability in CMS-spread coupon pricer (thanks to Peter Caspers).

    Date/time

    • ๐Ÿ›  Fix implementation of Actual/Actual (ISMA) day counter in case a schedule is provided (thanks to Philip Stephens).
    • ๐Ÿ›  Fix implementation of Calendar::businessDaysBetween method when the initial and final date are the same (thanks to Weston Steimel).
    • โž• Added day of mourning for G.H.W. Bush to the list of United States holidays (thanks to Joshua Engelman).
    • โšก๏ธ Updated list of Chinese holidays for 2019 (thanks to Cheng Li).
    • โž• Added basic unit tests for the TimeGrid class (thanks to Kai Striega).

    Math

    • Prevent solver failure in Richardson extrapolation (thanks to Klaus Spanderen).

    Examples

    • โž• Added multi-curve bootstrapping example (thanks to Jose Garcia). This examples supersedes the old swap-valuation example, that was therefore removed.

    ๐Ÿ—„ Deprecated features

    • Up to this release, it has been possible to force interest rates to be non-negative by commenting the QL_NEGATIVE_RATES macro in ql/userconfig.hpp on Visual C++ or by passing the --disable-negative-rates switch to ./configure on other systems. This possibility will no longer be supported in future releases.

    ๐Ÿ†• New opt-in features

    • ๐Ÿ‘‰ It is now possible to use std::function, std::bind and their related classes instead of boost::function and boost::bind. The feature can be enabled by uncommenting the QL_USE_STD_FUNCTION macro in ql/userconfig.hpp on Visual C++ or by passing the --enable-std-function switch to ./configure on other systems. This requires using at least the C++11 standard during compilation.
    • ๐Ÿ”ง A new ./configure switch, --enable-std-classes, was added as a shortcut for --enable-std-pointers --enable-std-unique-ptr --enable-std-function.
  • v1.14 Changes

    October 01, 2018

    ๐Ÿ”„ Changes for QuantLib 1.14:

    QuantLib 1.14 includes 40 pull requests from several contributors.

    The most notable changes are included below.
    A detailed list of changes is available in ChangeLog.txt and at https://github.com/lballabio/QuantLib/milestone/10?closed=1.

    Portability

    • ๐Ÿš€ In April 2018, Microsoft ended its support for Microsoft Visual C++ 2008. As previously announced, this release drops support for it.
    • ๐Ÿ›  Fixed generation of RPM from QuantLib.spec (thanks to Simon Rees).
    • ๐Ÿšš Avoided uses of some features removed in C++17 so that the library can be compiled under the latest standard if needed.
    • โšก๏ธ boost::shared_ptr and a few related classes and functions were imported into the new namespace QuantLib::ext. This allows them to be conditionally replaced with their std:: versions (see the "opt-in features" section below). The default is still to use the boost implementation. Client code using the boost namespace explicitly doesn't need to be updated.
    • ๐Ÿ›  Fixed build and tests on FreeBSD-11 (thanks to Klaus Spanderen and to Mikhail Teterin for the heads-up).
    • ๐Ÿ›  Fixed tests with the -ffast-math compilation flag enabled (thanks to Klaus Spanderen and to Jon Davies for the heads-up).

    Instruments and pricing engines

    • โž• Add different settlement methods for swaptions (thanks to Peter Caspers).
    • Take into account distinct day-count conventions for different curves in the analytic barrier-option engine (thanks to GitHub user cosplay-raven).
    • Extract the correct constant coefficients to use in finite-difference vanilla-option engine when using a time-dependent Black-Scholes process (thanks to GitHub user Grant6899 for the analysis).

    Cash flows and interest rates

    • โž• Added Bibor and THBFIX indices (thanks to Matthias Lungwitz).

    Models

    • โž• Added a hook for using a custom smile model in the Markov functional model (thanks to Peter Caspers).
    • โž• Added a base class CalibrationHelperBase to the hierarchy of calibration helpers in order to allow for helpers not using the Black model.
    • Return underlying dynamics from Black-Karasinski model (thanks to Fanis Antoniou).

    Finite differences

    • โž• Added higher-order spatial operators (thanks to Klaus Spanderen).
    • โž• Added TR-BDF2 finite-difference scheme (thanks to Klaus Spanderen).

    Term structures

    • ๐Ÿ‘ Allow swap helpers to specify end-of-month convention (thanks to Matthias Lungwitz).

    Date/time

    • Prevented division by zero in Actual/365 Canadian day counter (thanks to Ioannis Rigopoulos for the heads-up).
    • โž• Added Children's Day to the list of Romanian holidays (thanks to Matthias Lungwitz).
    • โž• Added new calendar for Thailand (thanks to Matthias Lungwitz).
    • โž• Added 30/360 German day counter (thanks to Peter Caspers and Alexey Indiryakov).

    Math

    • ๐Ÿ›  Fixed bug in convex-monotone interpolation (thanks to Peter Caspers for the fix and to Tom Anderson for finding the bug).

    ๐Ÿ†• New opt-in features

    • It is now possible to use std::shared_ptr and its related classes instead of boost::shared_ptr. Note that, unlike its boost counterpart, std::shared_ptr doesn't check for null pointers before access; this can lead to crashes. The feature can be enabled by uncommenting the QL_USE_STD_SHARED_PTR macro in ql/userconfig.hpp on Visual C++ or by passing the --enable-std-pointers to ./configure on other systems. This requires using at least the C++11 standard during compilation.
    • It is now possible to use std::unique_ptr instead of std::auto_ptr; this makes it possible to compile the library in strict C++17 mode and to avoid deprecation warnings in C++11 and C++14 mode. The feature can be enabled by uncommenting the QL_USE_STD_UNIQUE_PTR macro in ql/userconfig.hpp on Visual C++ or by passing the --enable-std-unique-ptr to ./configure on other systems.

    ๐Ÿ›  Thanks go also to Sam Danbury, Barry Devlin, Roland Kapl, and GitHub user todatamining for smaller fixes, enhancements, and bug reports.

  • v1.13 Changes

    May 24, 2018

    ๐Ÿ”„ Changes for QuantLib 1.13:

    QuantLib 1.13 includes 42 pull requests from several contributors.

    The most notable changes are included below. A detailed list of changes is available in ChangeLog.txt and at https://github.com/lballabio/QuantLib/milestone/8?closed=1.

    Portability

    • ๐Ÿš€ In April 2018, Microsoft ended its support for Microsoft Visual C++ 2008. This release still includes a solution file for VC++ 2008, but we won't support it further or take bug reports for it. The next release will only contain project files for Visual C++ 2010 and later.
    • ๐Ÿ›  Fixed build on Solaris 12.5 in C++11 mode (thanks to Nick Glass).

    Instruments and pricing engines

    • ๐Ÿ›  Fix CDS calculation when the start date falls during the week-end (thanks to Guillaume Horel).
    • ๐Ÿ‘ Allow construction of a ForwardRateAgreement instance even if the interest-rate curve is not yet linked (thanks to Tom Anderson).

    Cash flows and interest rates

    • โž• Added Mosprime, Pribor, Robor and Wibor indices (thanks to Matthias Lungwitz).
    • ๐Ÿ‘Œ Improved performance of Black pricer for LIBOR coupons (thanks to Peter Caspers).
    • ๐Ÿ›  Fixed experimental quanto coupon pricer (thanks to Peter Caspers).
    • Revised experimental CMS-spread coupon pricer (thanks to Peter Caspers).

    Models

    • ๐Ÿ‘Œ Improvements for the experimental generalized Hull-White model (thanks to Roy Zywina).
    • ๐Ÿ›  Fixed drift in GSR process (thanks to Peter Caspers for the fix and to Seung Beom Bang for the heads up).
    • ๐Ÿ›  Fixed an out-of-bound access in the TwoFactorModel::ShortRateDynamics::process method (thanks to Weston Steimel).

    Finite differences

    • ๐Ÿ‘Œ Improved Black-Scholes mesher for low volatilities and high discrete dividends (thanks to Klaus Spanderen).
    • โž• Added method-of-lines scheme (thanks to Klaus Spanderen).

    Date/time

    • โฑ Schedule::until can now be used with schedules built from vectors of dates (thanks to GitHub user Grant6899).
    • โž• Added Good Friday to the list of Hungarian and Czech holidays (thanks to Matthias Lungwitz).
    • โšก๏ธ Updated the list of Turkish holidays after 2014 (thanks to Matthias Lungwitz).

    Math

    • โž• Added convenience operators to initialize array and matrices (thanks to Peter Caspers).

    โœ… Test suite

    • โž• Added test case for CIR++ model (thanks to Klaus Spanderen).

    ๐Ÿ›  Thanks go also to Jose Aparicio, Roland Kapl and GitHub user lab4quant for smaller fixes and enhancements.

  • v1.12.1 Changes

    April 16, 2018

    ๐Ÿ”„ Changes for QuantLib 1.12.1:

    ๐Ÿš€ QuantLib 1.12.1 is a bug-fix release for version 1.12.

    ๐Ÿš€ It fixes an error that would occur during initialization of the test suite when using the newly released Boost 1.67.0 (see #446 for details). Thanks to Klaus Spanderen for the prompt fix.

    The library code is unchanged from version 1.12.

  • v1.12 Changes

    March 01, 2018

    ๐Ÿ”„ Changes for QuantLib 1.12:

    QuantLib 1.12 includes 54 pull requests from several contributors.

    The most notable changes are included below. A detailed list of changes is available in ChangeLog.txt and at https://github.com/lballabio/QuantLib/milestone/7?closed=1.

    Portability

    • ๐Ÿš€ As announced in the previous release, support for the Dev-C++ IDE was removed.
    • ๐Ÿš€ In April 2018, Microsoft will end its support for Microsoft Visual C++ 2008. Therefore, this is the last version of QuantLib to support it with maintained project files. The next release will only contain project files for Visual C++ 2010 and later.
    • ๐Ÿ It is now possible to build a usable library with CMake on Windows (thanks to Javier G. Sogo).
    • ๐Ÿ›  Fix autotools build outside the source tree (thanks to Joshua Ulrich).

    Instruments and pricing engines

    • โž• Added OAS calculation to experimental callable bonds (thanks to Bojan Nikolic).
    • Avoided infinite loop for some sets of parameters in experimental variance-gamma engine (thanks to Roy Zywina).

    Cash flows

    • โฑ It is now possible to build a cash-flow leg from a schedule created from a precalculated vector of dates (thanks to Peter Caspers).

    Models

    • 0๏ธโƒฃ Affine models can now be used to bootstrap a default-probability curve (thanks to Jose Aparicio).
    • โž• Added Andreasen-Huge volatility interpolation and local volatility calibration (thanks to Klaus Spanderen).
    • โž• Added Rannacher smoothing steps for Heston stochastic local volatility calibration (thanks to Klaus Spanderen).

    Term structures

    • โž• Added L2 penalty to fitted parameters of fitted bond discount curve (thanks to Robin Northcott).
    • โž• Added an optional trading calendar to the FX-swap rate helper and and optional payment lag to the OIS rate helper (thanks to Wojciech Slusarski).
    • ๐Ÿ›  Fixed inconsistent treatment of strike in experimental CPI cap/floor term price surface (thanks to Francis Duffy).
    • Correctly handled the case of overlapping strike regions for caps and floors in experimental CPI cap/floor term price surface (thanks to Peter Caspers).
    • ๐Ÿ›  Fixed calculation of seasonality correction for interpolated inflation indexes (thanks to Francis Duffy).
    • Implemented composite zero-yield curve as combination of two existing curves via a given binary function (thanks to Francois Botha).
    • ๐Ÿ›  Fixed interpolation of shift in swaption volatility matrix (thanks to Peter Caspers).

    Date/time

    • โšก๏ธ Updated Chinese calendar for 2018 (thanks to Cheng Li).
    • โž• Added Botswana calendar (thanks to Francois Botha).
    • ๐Ÿ›  Fixed a few problems with US calendars (thanks to Mike DelMedico and to GitHub user ittegrat).
    • ๐Ÿ‘‰ User-added holidays now work correctly when intraday calculations are enabled (thanks to Klaus Spanderen for the fix and to GitHub user volchemist for the report).

    Math

    • ๐Ÿ›  Fixed monotonicity of Fritsch-Butland and prevented NaNs in some cases (thanks to GitHub user Grant6899 for the fix and to Tom Anderson for the report).

    ๐Ÿ—„ Deprecated features

    • ๐Ÿš€ The ChiSquareDistribution, NonCentralChiSquareDistribution, InverseNonCentralChiSquareDistribution and GammaDistribution were renamed to CumulativeChiSquareDistribution, NonCentralCumulativeChiSquareDistribution, InverseNonCentralCumulativeChiSquareDistribution and CumulativeGammaDistribution, respectively (thanks to GitHub user IGonza). The old names are still available as typedefs and will be removed in a future release.

    ๐Ÿ›  Thanks go also to Marco Craveiro, Dirk Eddelbuettel, Lakshay Garg, Guillaume Horel, Alix Lassauzet, Patrick Lewis, and GitHub users bmmay, bingoko and tournierjc for smaller fixes and enhancements.