atan() [2/2]

template<typename Derived, int IntBits, int FracBits>

static FASTLED_FORCE_INLINE Derived fl::fixed_point_base< Derived, IntBits, FracBits >::atan ( Derived x )

inlinestatic

Definition at line 166 of file base.h.

                                                        {
        constexpr Derived one(1.0f);
        constexpr Derived pi_over_2(1.5707963f);
        bool neg = x.mValue < 0;
        Derived ax = abs(x);
        Derived result;
        if (ax <= one) {
            result = atan_unit(ax);
        } else {
            result = pi_over_2 - atan_unit(one / ax);
        }
        return neg ? -result : result;
    }

References abs(), atan_unit(), FASTLED_FORCE_INLINE, and fl::x.

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