lerp7by8()

static int8_t lerp7by8 ( int8_t a, int8_t b, fract8 frac )

inlinestatic

Definition at line 298 of file noise.cpp.

{
    // int8_t delta = b - a;
    // int16_t prod = (uint16_t)delta * (uint16_t)frac;
    // int8_t scaled = prod >> 8;
    // int8_t result = a + scaled;
    // return result;
    int8_t result;
    if( b > a) {
        uint8_t delta = b - a;
        uint8_t scaled = scale8( delta, frac);
        result = a + scaled;
    } else {
        uint8_t delta = a - b;
        uint8_t scaled = scale8( delta, frac);
        result = a - scaled;
    }
    return result;
}

References scale8().

Referenced by inoise8_raw(), inoise8_raw(), and inoise8_raw().

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