pow()

static FASTLED_FORCE_INLINE s16x16 fl::s16x16::pow ( s16x16 base, s16x16 exp )

inlinestatic

Definition at line 235 of file s16x16.h.

                                                                                {
        if (base.mValue <= 0) return s16x16();
        constexpr s16x16 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 i32 kOneRaw = static_cast<i32>(SCALE);
        if (base.mValue >= (kOneRaw - 2) && base.mValue <= kOneRaw) {
            return one;
        }
        return exp2_fp(exp * log2_fp(base));
    }

References s16x16(), fl::exp(), exp2_fp(), FASTLED_FORCE_INLINE, FL_NOEXCEPT, log2_fp(), and SCALE.

Referenced by fl::applyGamma_video(), and fl::FlowFieldFP::flowAdvect().

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