dladiv.f File Reference

Functions/Subroutines
subroutine	dladiv (a, b, c, d, p, q)
	DLADIV

Function/Subroutine Documentation

dladiv()

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

DLADIV

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Purpose:

 DLADIV performs complex division in  real arithmetic

                       a + i*b
            p + i*q = ---------
                       c + i*d

 The algorithm is due to Robert L. Smith and can be found
 in D. Knuth, The art of Computer Programming, Vol.2, p.195

Parameters

[in]	A	A is DOUBLE PRECISION
[in]	B	B is DOUBLE PRECISION
[in]	C	C is DOUBLE PRECISION
[in]	D	D is DOUBLE PRECISION The scalars a, b, c, and d in the above expression.
[out]	P	P is DOUBLE PRECISION
[out]	Q	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.

Date

November 2011