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

NAME

       LAPACK-3 - generates a plane rotation so that   [ CS SN ] [ F ] [ R ]  [ __ ]

SYNOPSIS

       SUBROUTINE ZLARTG( F, G, CS, SN, R )

           DOUBLE         PRECISION CS

           COMPLEX*16     F, G, R, SN

PURPOSE

       ZLARTG generates a plane rotation so that
           [ -SN  CS  ]     [ G ]     [ 0 ]
        This is a faster version of the BLAS1 routine ZROTG, except for
        the following differences:
           F and G are unchanged on return.
           If G=0, then CS=1 and SN=0.
           If F=0, then CS=0 and SN is chosen so that R is real.

ARGUMENTS

        F       (input) COMPLEX*16
                The first component of vector to be rotated.

        G       (input) COMPLEX*16
                The second component of vector to be rotated.

        CS      (output) DOUBLE PRECISION
                The cosine of the rotation.

        SN      (output) COMPLEX*16
                The sine of the rotation.

        R       (output) COMPLEX*16
                The nonzero component of the rotated vector.

FURTHER DETAILS

        3-5-96 - Modified with a new algorithm by W. Kahan and J. Demmel
        This version has a few statements commented out for thread safety
        (machine parameters are computed on each entry). 10 feb 03, SJH.

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