LAPACK  3.9.0
LAPACK: Linear Algebra PACKage

◆ dcombssq()

subroutine dcombssq ( double precision, dimension( 2 )  V1,
double precision, dimension( 2 )  V2 
)

DCOMBSSQ adds two scaled sum of squares quantities.

Purpose:
 DCOMBSSQ adds two scaled sum of squares quantities, V1 := V1 + V2.
 That is,

    V1_scale**2 * V1_sumsq := V1_scale**2 * V1_sumsq
                            + V2_scale**2 * V2_sumsq
Parameters
[in,out]V1
          V1 is DOUBLE PRECISION array, dimension (2).
          The first scaled sum.
          V1(1) = V1_scale, V1(2) = V1_sumsq.
[in]V2
          V2 is DOUBLE PRECISION array, dimension (2).
          The second scaled sum.
          V2(1) = V2_scale, V2(2) = V2_sumsq.
Author
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date
November 2018