| XDR routines for R, gnuwin32 version |
| ==================================== |
| |
| R can make use of XDR to read/write binary dumps in a |
| machine-independent format. This directory was put together by Brian |
| Ripley from the version of the sunrpc distribution put together for |
| ONC RPC 1.10 for Windows NT by Martin F. Gergeleit. This is no longer |
| available directly, but is part of the NISGINA distribution |
| <www.dcs.qmw.ac.uk/~williams>. Only that part of XDR used by R is |
| included. |
| |
| [A later version of ONC/RPC is available at |
| http://www.plt.rwth-aachen.de/ks/english/oncrpc.html] |
| |
| For copyright see the Sun copyright in COPYRGHT.TXT and the header |
| of xdr.c. |
| |
| The only changes I made were |
| |
| (a) to comment out definitions in rpc/types.h that are duplicates of |
| those in Windows/Sockets.h |
| |
| (b) to define ntohl and htonl via assembler code at the head of |
| xdr_stdio.c. This will need to be altered for any other little-endian |
| system; generic code for 32-bit systems is provided. |
| |
| (c) to report errors directly rather than to NT services. |
| |
| Note that this code assume long is 4 bytes, and also implicitly |
| assumes that a pointer can be stored in a long. |
| |
| These functions are only used in saveload.c, which uses xdr_bytes, |
| xdr_double, xdr_int, xdr_string, xdrmem_create and xdrstdio_create. |
| |
| There was some further tidying up in July 2011 to enable this to be |
| used on other systems. In particular, we replaced 'long' by int32_t |
| and 'u_long' by uint32_t to ensure 32-bit types. |
