fix macOS build (following Projucer changes made in Windows, which removed /Applications/JUCE/modules from its headers). move JUCE headers under source control, so that Windows and macOS can both build against same version of JUCE. remove AUv3 target (I think it's an iOS thing, so it will never work with this macOS fluidsynth dylib).

modules/juce_dsp/maths/juce_Polynomial.h

@@ -0,0 +1,169 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2017 - ROLI Ltd.
+
+   JUCE is an open source library subject to commercial or open-source
+   licensing.
+
+   By using JUCE, you agree to the terms of both the JUCE 5 End-User License
+   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
+   27th April 2017).
+
+   End User License Agreement: www.juce.com/juce-5-licence
+   Privacy Policy: www.juce.com/juce-5-privacy-policy
+
+   Or: You may also use this code under the terms of the GPL v3 (see
+   www.gnu.org/licenses).
+
+   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+   DISCLAIMED.
+
+  ==============================================================================
+*/
+
+namespace juce
+{
+namespace dsp
+{
+
+/**
+    A class representing a polynomial
+
+    @tags{DSP}
+*/
+template <typename FloatingType>
+class Polynomial
+{
+public:
+    //==============================================================================
+    /** Creates a new polynomial which will always evaluate to zero. */
+    Polynomial()
+    {
+        coeffs.add (0);
+    }
+
+    /** Creates a new polynomial with given coefficients.
+
+        @param numCoefficients The number of coefficients stored in coefficients.
+                               This is also the order of the returned polynomial.
+        @param coefficients    The coefficients which will be used by the newly
+                               created polynomial. The Polynomial class will keep
+                               a private copy of the coefficients.
+    */
+    Polynomial (const FloatingType* coefficients, int numCoefficients)
+        : coeffs (coefficients, numCoefficients)
+    {
+        jassert (! coeffs.isEmpty());
+    }
+
+    /** Creates a copy of another polynomial. */
+    Polynomial (const Polynomial&) = default;
+
+    /** Creates a copy of another polynomial. */
+    Polynomial (Polynomial&&) = default;
+
+    /** Creates a copy of another polynomial. */
+    Polynomial& operator= (const Polynomial&) = default;
+
+    /** Creates a copy of another polynomial. */
+    Polynomial& operator= (Polynomial&&) = default;
+
+    /** Creates a new polynomial with coefficients by a C++11 initializer list.
+        This function can be used in the following way:
+        Polynomial<float> p ({0.5f, -0.3f, 0.2f});
+    */
+    template <typename... Values>
+    Polynomial (Values... items)  : coeffs (items...)
+    {
+        jassert (! coeffs.isEmpty());
+    }
+
+    //==============================================================================
+    /** Returns a single coefficient of the receiver for reading */
+    FloatingType operator[] (int index) const noexcept              { return coeffs.getUnchecked (index); }
+
+    /** Returns a single coefficient of the receiver for modifying. */
+    FloatingType& operator[] (int index) noexcept                   { return coeffs.getReference (index); }
+
+    /** Evaluates the value of the polynomial at a single point x. */
+    FloatingType operator() (FloatingType x) const noexcept
+    {
+        // Horner's method
+        FloatingType y (0);
+
+        for (int i = coeffs.size(); --i >= 0;)
+            y = (x * y) + coeffs.getUnchecked(i);
+
+        return y;
+    }
+
+    /** Returns the order of the polynomial. */
+    int getOrder() noexcept
+    {
+        return coeffs.size() - 1;
+    }
+
+    //==============================================================================
+    /** Returns the polynomial with all its coefficients multiplied with a gain factor */
+    Polynomial<FloatingType> withGain (double gain) const
+    {
+        auto result = *this;
+
+        for (auto& c : result.coeffs)
+            c *= gain;
+
+        return result;
+    }
+
+    /** Returns the sum of this polynomial with another */
+    Polynomial<FloatingType> getSumWith (const Polynomial<FloatingType>& other) const
+    {
+        if (coeffs.size() < other.coeffs.size())
+            return other.getSumWith (*this);
+
+        auto result = *this;
+
+        for (int i = 0; i < other.coeffs.size(); ++i)
+            result[i] += other[i];
+
+        return result;
+    }
+
+    /** computes the product of two polynomials and return the result */
+    Polynomial<FloatingType> getProductWith (const Polynomial<FloatingType>& other) const
+    {
+        Polynomial<FloatingType> result;
+        result.coeffs.clearQuick();
+
+        auto N1 = coeffs.size();
+        auto N2 = other.coeffs.size();
+        auto Nmax = jmax (N1, N2);
+
+        auto N = N1 + N2 - 1;
+
+        for (int i = 0; i < N; ++i)
+        {
+            FloatingType value (0);
+
+            for (int j = 0; j < Nmax; ++j)
+                if (j >= 0 && j < N1 && i - j >= 0 && i - j < N2)
+                    value = value + (*this)[j] * other[i - j];
+
+            result.coeffs.add (value);
+        }
+
+        return result;
+    }
+
+private:
+    //==============================================================================
+    Array<FloatingType> coeffs;
+
+    JUCE_LEAK_DETECTOR (Polynomial)
+};
+
+} // namespace dsp
+} // namespace juce