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lapy2(3) LAPACK lapy2(3)

NAME

lapy2 - lapy2: robust sqrt( x^2 + y^2 )

SYNOPSIS

Functions


double precision function dlapy2 (x, y)
DLAPY2 returns sqrt(x2+y2). real function slapy2 (x, y)
SLAPY2 returns sqrt(x2+y2).

Detailed Description

Function Documentation

double precision function dlapy2 (double precision x, double precision y)

DLAPY2 returns sqrt(x2+y2).

Purpose:

!>
!> DLAPY2 returns sqrt(x**2+y**2), taking care not to cause unnecessary
!> overflow and unnecessary underflow.
!>

Parameters

X 

!>          X is DOUBLE PRECISION
!>

Y

!>          Y is DOUBLE PRECISION
!>          X and Y specify the values x and y.
!>

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

real function slapy2 (real x, real y)

SLAPY2 returns sqrt(x2+y2).

Purpose:

!>
!> SLAPY2 returns sqrt(x**2+y**2), taking care not to cause unnecessary
!> overflow and unnecessary underflow.
!>

Parameters

X 

!>          X is REAL
!>

Y

!>          Y is REAL
!>          X and Y specify the values x and y.
!>

Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Author

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Tue Jun 30 2026 04:57:07 Version 3.12.0