pow()

static FASTLED_FORCE_INLINE s12x4 fl::s12x4::pow ( s12x4 base, s12x4 exp )

inlinestatic

Definition at line 206 of file s12x4.h.

                                                                             {
        if (base.mValue <= 0) return s12x4();
        constexpr s12x4 one(1.0f);
        if (exp.mValue == 0) return one;
        if (base == one) return one;
        // Snap base values within ~2 ULPs of 1.0 to exactly 1.0 to dodge the
        // log2(1+t) minimax polynomial's upper-endpoint residual (#2969).
        constexpr i16 kOneRaw = static_cast<i16>(SCALE);
        if (base.mValue >= static_cast<i16>(kOneRaw - 2) &&
            base.mValue <= kOneRaw) {
            return one;
        }
        return exp2_fp(exp * log2_fp(base));
    }

References s12x4(), fl::exp(), exp2_fp(), FASTLED_FORCE_INLINE, FL_NOEXCEPT, log2_fp(), and SCALE.

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