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RedHat 9 (Linux i386) - man page for clartg (redhat section l)

CLARTG(l)					)					CLARTG(l)

NAME
       CLARTG - generate a plane rotation so that  [ CS SN ] [ F ] [ R ] [ __ ]

SYNOPSIS
       SUBROUTINE CLARTG( F, G, CS, SN, R )

	   REAL 	  CS

	   COMPLEX	  F, G, R, SN

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.

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

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

       CS      (output) REAL
	       The cosine of the rotation.

       SN      (output) COMPLEX
	       The sine of the rotation.

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

FURTHER DETAILS
       3-5-96 - Modified with a new algorithm by W. Kahan and J. Demmel

LAPACK version 3.0			   15 June 2000 				CLARTG(l)


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