LAPACK 3.12.0
LAPACK: Linear Algebra PACKage
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◆ sladiv()

subroutine sladiv ( real a,
real b,
real c,
real d,
real p,
real q )

SLADIV performs complex division in real arithmetic, avoiding unnecessary overflow.

Download SLADIV + dependencies [TGZ] [ZIP] [TXT]

Purpose:
!>
!> SLADIV performs complex division in  real arithmetic
!>
!>                       a + i*b
!>            p + i*q = ---------
!>                       c + i*d
!>
!> The algorithm is due to Michael Baudin and Robert L. Smith
!> and can be found in the paper
!> 
!> 
Parameters
[in]A
!>          A is REAL
!> 
[in]B
!>          B is REAL
!> 
[in]C
!>          C is REAL
!> 
[in]D
!>          D is REAL
!>          The scalars a, b, c, and d in the above expression.
!> 
[out]P
!>          P is REAL
!> 
[out]Q
!>          Q is REAL
!>          The scalars p and q in the above expression.
!> 
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.