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CLARTG(3F)							    CLARTG(3F)

NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

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

	 REAL		CS

	 COMPLEX	F, G, R, SN

PURPOSE    [Toc]    [Back]

     CLARTG generates a	plane rotation so that
	[ -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 and (G .ne. 0), then CS=0 and SN=1 without doing	any
	   floating point operations.

ARGUMENTS    [Toc]    [Back]

     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.
CLARTG(3F)							    CLARTG(3F)

NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

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

	 REAL		CS

	 COMPLEX	F, G, R, SN

PURPOSE    [Toc]    [Back]

     CLARTG generates a	plane rotation so that
	[ -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 and (G .ne. 0), then CS=0 and SN=1 without doing	any
	   floating point operations.

ARGUMENTS    [Toc]    [Back]

     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.


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