1 files changed, 46 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftmodr.f b/pkg/tbtables/fitsio/ftmodr.f
new file mode 100644
index 00000000..97336703
--- /dev/null
+++ b/pkg/tbtables/fitsio/ftmodr.f
@@ -0,0 +1,46 @@
+C--------------------------------------------------------------------------
+        subroutine ftmodr(ounit,record,status)
+
+C       modify the preceeding 80 character record in the FITS header
+C
+C       ounit   i  fortran output unit number
+C       record  c  input 80 character header record
+C       OUTPUT PARAMETERS:
+C       status  i  output error status (0 = ok)
+C
+C       written by Wm Pence, HEASARC/GSFC, June 1991
+
+        character*(*) record
+        character*80  rec
+        integer ounit,status,ibuff
+
+C-------COMMON BLOCK DEFINITIONS:--------------------------------------------
+        integer nb,ne
+        parameter (nb = 20)
+        parameter (ne = 200)
+        integer bufnum,chdu,hdutyp,maxhdu,hdstrt,hdend,nxthdr,dtstrt
+        integer nxtfld
+        logical wrmode
+        common/ft0001/bufnum(199),chdu(nb),hdutyp(nb),maxhdu(nb),
+     &  wrmode(nb),hdstrt(nb,ne),hdend(nb),nxthdr(nb),dtstrt(nb),nxtfld
+C-------END OF COMMON BLOCK DEFINITIONS:------- -----------------------------
+
+        if (status .gt. 0)return
+
+C       get the number of the data buffer used for this unit
+        ibuff=bufnum(ounit)
+
+        rec=record
+
+C       make sure keyword name is in upper case
+        call ftupch(rec(1:8))
+
+C       test that keyword name contains only legal characters
+        call fttkey(rec(1:8),status)
+
+C       move the I/O pointer back to the beginning of the preceeding keyword
+        call ftmbyt(ounit,nxthdr(ibuff)-80,.false.,status)
+
+C       overwrite the 80 characters to the output buffer:
+        call ftpcbf(ounit,1,80,rec,status)
+        end