if ((GPIOX_DATA & 0xXX) == 1) // IF THE PORTS' DATA REGISTER, AT PIN, IS HIGH,
    GPIOX_DATA |= 0xXX;       // SET THIS PORTS' DATA REGISTER, AT PIN, TO HIGH

0b10110101
0b00000100 &
==========
0b00000100 = 4

if (GPIOX_DATA & 0xXX) // IF THE PORTS' DATA REGISTER, AT PIN, IS HIGH,
    GPIOX_DATA |= 0xXX;       // SET THIS PORTS' DATA REGISTER, AT PIN, TO HIGH