dlapy3()

double precision function dlapy3	(	double precision	X,
		double precision	Y,
		double precision	Z
	)

DLAPY3 returns sqrt(x2+y2+z2).

Download DLAPY3 + dependencies [TGZ] [ZIP] [TXT]

Purpose:

 DLAPY3 returns sqrt(x**2+y**2+z**2), taking care not to cause
 unnecessary overflow and unnecessary underflow.

Parameters

[in]	X	X is DOUBLE PRECISION
[in]	Y	Y is DOUBLE PRECISION
[in]	Z	Z is DOUBLE PRECISION X, Y and Z specify the values x, y and z.

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.