Provided by: liblapack-doc_3.3.1-1_all bug

NAME

       LAPACK-3  - returns the values scl and ssq such that   ( scl**2 )*ssq = x( 1 )**2 +...+ x(
       n )**2 + ( scale**2 )*sumsq,

SYNOPSIS

       SUBROUTINE ZLASSQ( N, X, INCX, SCALE, SUMSQ )

           INTEGER        INCX, N

           DOUBLE         PRECISION SCALE, SUMSQ

           COMPLEX*16     X( * )

PURPOSE

       ZLASSQ returns the values scl and ssq such that
        where x( i ) = abs( X( 1 + ( i - 1 )*INCX ) ). The value of sumsq is
        assumed to be at least unity and the value of ssq will then satisfy
           1.0 .le. ssq .le. ( sumsq + 2*n ).
        scale is assumed to be non-negative and scl returns the value
           scl = max( scale, abs( real( x( i ) ) ), abs( aimag( x( i ) ) ) ),
                  i
        scale and sumsq must be supplied in SCALE and SUMSQ respectively.
        SCALE and SUMSQ are overwritten by scl and ssq respectively.
        The routine makes only one pass through the vector X.

ARGUMENTS

        N       (input) INTEGER
                The number of elements to be used from the vector X.

        X       (input) COMPLEX*16 array, dimension (N)
                The vector x as described above.
                x( i )  = X( 1 + ( i - 1 )*INCX ), 1 <= i <= n.

        INCX    (input) INTEGER
                The increment between successive values of the vector X.
                INCX > 0.

        SCALE   (input/output) DOUBLE PRECISION
                On entry, the value  scale  in the equation above.
                On exit, SCALE is overwritten with the value  scl .

        SUMSQ   (input/output) DOUBLE PRECISION
                On entry, the value  sumsq  in the equation above.
                On exit, SUMSQ is overwritten with the value  ssq .

 LAPACK auxiliary routine (version 3.2)     April 2011                            ZLASSQ(3lapack)