fade()

FASTLED_FORCE_INLINE fl::i32 fl::perlin_i16_optimized::fade ( fl::i16 t, const fl::i32 * table )

staticprivate

Definition at line 76 of file perlin_i16_optimized.cpp.hpp.

                                                                                              {
    fl::u32 idx = static_cast<fl::u32>(t) >> 8;  // i16 → 8-bit index
    fl::i32 frac = t & 0xFF;
    fl::i32 a = table[idx];
    fl::i32 b = table[idx + 1];
    return a + ((static_cast<fl::i32>(frac << 8) * (b - a)) >> 16);
}

References FASTLED_FORCE_INLINE, fl::FL_NO_EXCEPT, and fl::t.