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C--------------------------------------------------------------------------
subroutine ftmkye(ounit,keywrd,rval,decim,comm,status)
C modify a real*4 value header record in E format
C
C ounit i fortran output unit number
C keywrd c keyword name ( 8 characters, cols. 1- 8)
C rval r keyword value
C decim i number of decimal places to display in value field
C comm c keyword comment (47 characters, cols. 34-80)
C OUTPUT PARAMETERS:
C status i output error status (0 = ok)
C
C written by Wm Pence, HEASARC/GSFC, June 1991
character*(*) keywrd,comm
real rval
integer ounit,status,decim
character value*20,cmnt*48
C find the old keyword
call ftgkey(ounit,keywrd,value,cmnt,status)
C check for special symbol indicating that comment should not be changed
if (comm .ne. '&')then
cmnt=comm
end if
C convert real to E format character string
call ftr2e(rval,decim,value,status)
C modify the keyword record
call ftmkey(ounit,keywrd,value,cmnt,status)
end
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