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clartg.f(3)                         LAPACK                         clartg.f(3)

NAME
       clartg.f -

SYNOPSIS
   Functions/Subroutines
       subroutine clartg (F, G, CS, SN, R)
           CLARTG generates a plane rotation with real cosine and complex
           sine.

Function/Subroutine Documentation
   subroutine clartg (complexF, complexG, realCS, complexSN, complexR)
       CLARTG generates a plane rotation with real cosine and complex sine.

       Purpose:

            CLARTG generates a plane rotation so that

               [  CS  SN  ]     [ F ]     [ R ]
               [  __      ]  .  [   ]  =  [   ]   where CS**2 + |SN|**2 = 1.
               [ -SN  CS  ]     [ G ]     [ 0 ]

            This is a faster version of the BLAS1 routine CROTG, 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.

       Parameters:
           F

                     F is COMPLEX
                     The first component of vector to be rotated.

           G

                     G is COMPLEX
                     The second component of vector to be rotated.

           CS

                     CS is REAL
                     The cosine of the rotation.

           SN

                     SN is COMPLEX
                     The sine of the rotation.

           R

                     R is COMPLEX
                     The nonzero component of the rotated vector.

       Author:
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Date:
           November 2013

       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.

       Definition at line 104 of file clartg.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2                   Sat Nov 16 2013                    clartg.f(3)