mat_wdiv Subroutine

public subroutine mat_wdiv(ar, ai, br, bi, cr, ci)

Arguments

Type IntentOptional Attributes Name
doubleprecision :: ar
doubleprecision :: ai
doubleprecision :: br
doubleprecision :: bi
doubleprecision :: cr
doubleprecision :: ci

Contents

Variables

Source Code

mat_wdiv

Variables

Type Visibility Attributes Name Initial
doubleprecision, public :: ais
doubleprecision, public :: ars
doubleprecision, public :: bis
doubleprecision, public :: brs
doubleprecision, public :: d
doubleprecision, public :: s

Source Code

subroutine mat_wdiv(ar,ai,br,bi,cr,ci)

! ident_17="@(#)M_LA::mat_wdiv(3fp): c = a/b"

doubleprecision :: ar
doubleprecision :: ai
doubleprecision :: br
doubleprecision :: bi
doubleprecision :: cr
doubleprecision :: ci

doubleprecision :: s
doubleprecision :: d
doubleprecision :: ars
doubleprecision :: ais
doubleprecision :: brs
doubleprecision :: bis

   s = dabs(br) + dabs(bi)
   if (s .eq. 0.0d0) then
      call mat_err(27)
      return
   endif
   ars = ar/s
   ais = ai/s
   brs = br/s
   bis = bi/s
   d = brs**2 + bis**2
   cr = mat_flop((ars*brs + ais*bis)/d)
   ci = (ais*brs - ars*bis)/d
   if (ci .ne. 0.0d0) ci = mat_flop(ci)
end subroutine mat_wdiv