export uniform int width() { return programCount; }

export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
    varying unsigned int16 a_max = 65535, a_min = 0; // max and min unsigned int16
    if (programIndex % 2 == 0) {
        RET[programIndex] = saturating_sub(a_min, b);
    }
    else {
        RET[programIndex] = saturating_sub(a_max, b);
    } 
}

export void result(uniform float RET[]) {
    if (programIndex % 2 == 0) {
        RET[programIndex] = (varying unsigned int16) 0;
    }
    else {
        RET[programIndex] = (varying unsigned int16) 65530;
    } 
}