6.1 SREIBW/WRITEM: write to a file

      subroutine sreibw(a,len,ifil,namx,ioffx)
      implicit double precision  (a-h,o-z)
      character*(*) string
      dimension a(*)
      entry writem(a,len,ifil,namx,ioffx,string)

Write a(1:len) to record namx on file ifil. If ioffx is non-zero, the first element of a is written ioffx words after the start of the record. string, which for sreibw defaults to ` ', is descriptive information which is included in the file summary printed after each program step.