NAME

SRC/dladiv.f

SYNOPSIS

Functions/Subroutines

subroutine dladiv (a, b, c, d, p, q)
DLADIV performs complex division in real arithmetic, avoiding unnecessary overflow. subroutine dladiv1 (a, b, c, d, p, q)
double precision function dladiv2 (a, b, c, d, r, t)

Function/Subroutine Documentation

subroutine dladiv (double precision a, double precision b, double precision c, double precision d, double precision p, double precision q)

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

Purpose:



 DLADIV 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


 'A Robust Complex Division in Scilab'

Parameters



          A is DOUBLE PRECISION



          B is DOUBLE PRECISION



          C is DOUBLE PRECISION



          D is DOUBLE PRECISION


          The scalars a, b, c, and d in the above expression.



          P is DOUBLE PRECISION



          Q is DOUBLE PRECISION


          The scalars p and q in the above expression.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 90 of file dladiv.f.

subroutine dladiv1 (double precision a, double precision b, double precision c, double precision d, double precision p, double precision q)

Definition at line 176 of file dladiv.f.

double precision function dladiv2 (double precision a, double precision b, double precision c, double precision d, double precision r, double precision t)

Definition at line 215 of file dladiv.f.

Author

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