#version 310 es
layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;

void main()
{
    int signed_value = 0;
    uint unsigned_value = 0u;
    int s = bitfieldExtract(signed_value, 5, 20);
    uint u = bitfieldExtract(unsigned_value, 6, 21);
    s = bitfieldInsert(s, 40, 5, 4);
    u = bitfieldInsert(u, 60u, 5, 4);
    u = bitfieldReverse(u);
    s = bitfieldReverse(s);
    int v0 = bitCount(u);
    int v1 = bitCount(s);
    int v2 = findMSB(u);
    int v3 = findLSB(s);
}