README.md

3.5

xp in %rdi, yp in %rsi, zp in %rdx.

The c code:

void decode1(long* xp, long* yp, long* zp) {
    long x = *xp;
    long y = *yp;
    long z = zp;
    *yp = x;
    *zp = y;
    *xp = z;
    return ;
}