FWRITE  FWRITE File Write Function


Usage
 
 Writes an array to a given file handle as a block of binary (raw) data.
 The general use of the function is
 
   n = fwrite(handle,A)
 
 The handle argument must be a valid value returned by the fopen 
 function, and accessable for writing. The array A is written to
 the file a column at a time.  The form of the output data depends
 on (and is inferred from) the precision of the array A.  If the 
 write fails (because we ran out of disk space, etc.) then an error
 is returned.  The output n indicates the number of elements
 successfully written.
 