redhat man page for dlapy2

DLAPY2(l)								 )								 DLAPY2(l)

NAME
       DLAPY2 - return sqrt(x**2+y**2), taking care not to cause unnecessary overflow

SYNOPSIS
       DOUBLE PRECISION FUNCTION DLAPY2( X, Y )

	   DOUBLE	PRECISION X, Y

PURPOSE
       DLAPY2 returns sqrt(x**2+y**2), taking care not to cause unnecessary overflow.

ARGUMENTS
       X       (input) DOUBLE PRECISION
	       Y       (input) DOUBLE PRECISION X and Y specify the values x and y.

LAPACK version 3.0						   15 June 2000 							 DLAPY2(l)