Word Addressable I/O

NAME

waread - Reads a word addressable file

USAGE

call waread (iun, buf, addr, nwords) (FORTRAN)

c_waread(iun, &buf, addr, nwords) (C)

DESCRIPTION

Reads nwords words starting at address addr into buffer buf .

On byte addressable machines, WA software routines store the information in a "most significant byte first" fashion.

(click here for an FORTRAN example of use and here for a C example of use)

iun

FORTRAN unit number associated to the external file to read.

buf

Buffer to store the read information.

addr

Starting word address position from which reading occurs.

nwords

Number of words to read.

Mario Lépine - RPN

WA (Word Addressable) file are 1 based, i.e. first address of the file start at word #1.

Warning: Do not mix different I/O access to the same file (ex: writda, wawrit).

Buffering configuration can be controlled via the WA_CONFIG environment variable for performance issue.

SEE ALSO

( waopen, wawrit, waclos)