atan() [2/2]

static FASTLED_FORCE_INLINE s12x4 fl::s12x4::atan ( s12x4 x )

inlinestatic

Definition at line 152 of file s12x4.h.

                                                                {
        constexpr s12x4 one(1.0f);
        constexpr s12x4 pi_over_2(1.5707963f);
        bool neg = x.mValue < 0;
        s12x4 ax = abs(x);
        s12x4 result;
        if (ax <= one) {
            result = atan_unit(ax);
        } else {
            result = pi_over_2 - atan_unit(one / ax);
        }
        return neg ? -result : result;
    }

References s12x4(), abs(), atan_unit(), FASTLED_FORCE_INLINE, FL_NOEXCEPT, and fl::x.

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