$for (silrdx)
# TZYX3 -- Generic 3d transpose, x->z, y->y, z->x. The arrays need not be
# identical.
procedure tzyx3$t (a, b, nx, ny, nz)
PIXEL a[nx, ny, nz], b[nz, ny, nx]
int nx, ny, nz, x, y, z
begin
do x = 1, nx
do y = 1, ny
do z = 1, nz
b[z, y, x] = a[x, y, z]
end
$endfor