piecewisefunction.hpp

/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 
/*
 Copyright (C) 2015 Peter Caspers
 
 This file is part of QuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://quantlib.org/
 
 QuantLib is free software: you can redistribute it and/or modify it
 under the terms of the QuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 <quantlib-dev@lists.sf.net>. The license is also available online at
 <http://quantlib.org/license.shtml>.
 
 This program is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE.  See the license for more details.
*/
 
#ifndef quantlib_piecewise_function_hpp
#define quantlib_piecewise_function_hpp
 
#include <ql/qldefines.hpp>
#include <algorithm>
 
#define QL_PIECEWISE_FUNCTION(X, Y, x)                                         \
    Y[std::min<std::size_t>(                                                   \
        std::upper_bound(X.begin(), X.end(), x) - X.begin(), Y.size() - 1)]
 
#endif