Fix instability of Luv/Lab color conversions
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@ -124,8 +124,8 @@ template<typename _Tp> static void splineBuild(const _Tp* f, int n, _Tp* tab)
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// interpolates value of a function at x, 0 <= x <= n using a cubic spline.
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template<typename _Tp> static inline _Tp splineInterpolate(_Tp x, const _Tp* tab, int n)
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{
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int ix = cvFloor(x);
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ix = std::min(std::max(ix, 0), n-1);
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// don't touch this function without urgent need - some versions of gcc fail to inline it correctly
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int ix = std::min(std::max(int(x), 0), n-1);
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x -= ix;
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tab += ix*4;
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return ((tab[3]*x + tab[2])*x + tab[1])*x + tab[0];
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