To vtc (Vectorizable Treecode written in C) users...

1) To compile the code, modify Makefile so that it would suit your
environment. Then just type 'make'. This will generate executable
'vtc' and library 'libvtc.a'.


2a) To use 'vtc' executable, run 'vtc' with '-h' option. You will see
a brief description for option switches.


2b) To use 'libvtc.a' library, include 'vtc.h' into your code before
linking 'libvtc.a'. The function prototypes are defined in it.

Actually this is the usage of this software the author initially
intended.  By linking the library to your own code, you can use the
function vtc_get_force_tree() as an replacement of your own
force-calculation function. The executable 'vtc' is just an example
which shows the usage of the library.

If you have any question, please do not hesitate to email me at:
kawai@kfcr.jp

enjoy,

Atsushi Kawai
kawai@kfcr.jp
K&F Computing Research
