CONSTANTS(5) LAM FORTRAN LIBRARY CONSTANTS(5)NAME
CONSTANTS - constants for LAM Fortran programming
DESCRIPTION
The following table describes the values appropriate to various constants used in LAM. It also describes the meaning of the constants and
lists the cpp(1) header files in which the constants can be found. To use these files, the Fortran source files will need to be passed
through cpp(1) before they are given to the Fortran compiler. Some compiler drivers will run cpp(1) if the source file suffix is .F.
In lieu of cpp(1), the constants can be copied to parameter statements in the Fortran source files.
CONSTANT VALUE DESCRIPTION FILE
Network Constants:
LOCAL -2147483647 local node NET.h
MAXNMSGLEN 8192 maximum length of one message packet NET.h
NHDSIZE 8 maximum size in words of ndata NET.h
argument
NOTNODEID -2147483648 error occurred in IGNDID(2) NET.h
NOTNODETYPE -2147483648 error occurred in IGRTP(2) NET.h
Node Types:
NTCAST 2 multicast definition NET.h
NTWASTE 4 not fully used/wasted NET.h
NTDISK 8 node with attached disk NET.h
NTTUBE 16 node with attached video unit NET.h
NTJONES 32 node is a neighbour NET.h
NTBOOT 64 neighbour node to boot NET.h
NTALL 127 matches any type NET.h
Message Flags:
NOBUF 16 turn off buffering NET.h
NREEL 1024 multireel NET.h
DRAWDATA 65536 ndata representation will not be NET.h
changed
DINT4DATA 131072 ndata holds 8 32-bit integer NET.h
DFLT4DATA 262144 ndata holds 8 single precision reals NET.h
DFLT8DATA 524288 ndata holds 4 double precision reals NET.h
DRAWMSG 1048576 nmsg representation will not be NET.h
changed
DINT4MSG 2097152 nmsg holds integers NET.h
DFLT4MSG 4194304 nmsg holds single precision reals NET.h
DFLT8MSG 8388608 nmsg holds double precision reals NET.h
Reserved Cast Identifiers:
HOST2ALL -2147483646 multicast from origin to all nodes NET.h
HOST2COMP -2147483642 multicast from origin to compute nodes NET.h
File Flags:
O_RDONLY 0 open for reading only FREQ.h
O_WRONLY 1 open for writing only FREQ.h
O_RDWR 2 open for reading and writing FREQ.h
O_APPEND 8 append on each write FREQ.h
O_CREAT 512 create file if it does not exist FREQ.h
O_TRUNC 1024 truncate length to 0 FREQ.h
O_EXCL 2048 error if create and file exists FREQ.h
O_SYNC 8192 update file data and file status FREQ.h
before writing
O_LOCK 65536 lock file descriptor active FREQ.h
O_REUSE 131072 reuse existing file descriptor FREQ.h
O_1WAY 4194304 do not acknowledge writes FREQ.h
Process Runtime Flags:
RTF_WAIT 16 child sends a message to NET.h
parent when it exits
RTF_TRACE 256 enable process tracing NET.h
LAM 7.1.4 July, 2007 CONSTANTS(5)
Check Out this Related Man Page
NETROM(4) Linux Programmer's Manual NETROM(4)NAME
AF_NETROM - NET/ROM amateur packet radio protocol family
DESCRIPTION
NET/ROM is a protocol used extensively by radio amateurs. The Linux NET/ROM protocol family permits access to these protocols via the stan-
dard networking socket metaphor.
The NET/ROM protocol layer only supports connected mode. IP traffic may be stacked on top of NET/ROM frames using a non-standard extension
to the NET/ROM protocol.
The only mode of operation is connected mode which is the mode used for a socket of type SOCK_SEQPACKET (stream sockets are not available
in NET/ROM). This requires that the user ensures output data is suitably packetised, and that input data is read a packet at a time into a
buffer of suitable size.
NET/ROM addresses consist of 6 ascii characters and a number called the SSID. These are encoded into a sockaddr_ax25 structure which is
provided to the relevant system calls.
NET/ROM has some unusual properties. Notably in a multi-user system an AX.25 address is often associated with a user, and some users may
not have such an association. a set of ioctl calls are provided to manage an association table.
NET/ROM supports the following socket options for SOL_NETROM. NETROM_T1 is the T1 timer in 1/10ths of a second, NETROM_T2 is the T2 timer
in 1/10ths of a second. NETROM_N2, the retry counter is also configurable. There is no 'infinite retry' option supported however. It is
possible for an application to request that the NET/ROM layer return the NET/ROM header as well as the application data, this is done via
the NETROM_HDRINCL socket option.
SEE ALSO call(1), socket(2), setsockopt(2), getsockopt(2), nrbroadcast(5), nrports(5), netromd(8), noderest(8), nodesave(8), nrparms(8).
AUTHOR
Jonathan Naylor G4KLX <g4klx@g4klx.demon.co.uk>
Linux 25 July 1996 NETROM(4)