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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <mach.h>
# AREAD -- Asychronous block read from a binary file. Reads can only
# start at a character offset which is an integral multiple of the file
# block size.
procedure aread (fd, buffer, maxchars, char_offset)
int fd # FIO file descriptor
int maxchars # maximum number of chars to be read
char buffer[ARB] # buffer into which data is to be read
long char_offset # one-indexed char offset in file
int maxbytes
long byte_offset
begin
maxbytes = maxchars * SZB_CHAR
byte_offset = (char_offset-1) * SZB_CHAR + 1
call areadb (fd, buffer, maxbytes, byte_offset)
end
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