$for (silrdx)
# TYXZ3 -- Generic 3d transpose, x->y, y->x, z->z. The arrays need not be
# identical.
procedure tyxz3$t (a, b, nx, ny, nz)
PIXEL a[nx, ny, nz], b[ny, nx, nz]
int nx, ny, nz, x, y, z
begin
do x = 1, nx
do y = 1, ny
do z = 1, nz
b[y, x, z] = a[x, y, z]
end
$endfor