.TH "zlartg.f" 3 "Sun May 26 2013" "Version 3.4.1" "LAPACK" \" -*- nroff -*-
.ad l
.nh
.SH NAME
zlartg.f \- 
.SH SYNOPSIS
.br
.PP
.SS "Functions/Subroutines"

.in +1c
.ti -1c
.RI "subroutine \fBzlartg\fP (F, G, CS, SN, R)"
.br
.RI "\fI\fBZLARTG\fP \fP"
.in -1c
.SH "Function/Subroutine Documentation"
.PP 
.SS "subroutine zlartg (complex*16F, complex*16G, double precisionCS, complex*16SN, complex*16R)"

.PP
\fBZLARTG\fP  
.PP
\fBPurpose: \fP
.RS 4

.PP
.nf
 ZLARTG 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 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.
.fi
.PP
 
.RE
.PP
\fBParameters:\fP
.RS 4
\fIF\fP 
.PP
.nf
          F is COMPLEX*16
          The first component of vector to be rotated.
.fi
.PP
.br
\fIG\fP 
.PP
.nf
          G is COMPLEX*16
          The second component of vector to be rotated.
.fi
.PP
.br
\fICS\fP 
.PP
.nf
          CS is DOUBLE PRECISION
          The cosine of the rotation.
.fi
.PP
.br
\fISN\fP 
.PP
.nf
          SN is COMPLEX*16
          The sine of the rotation.
.fi
.PP
.br
\fIR\fP 
.PP
.nf
          R is COMPLEX*16
          The nonzero component of the rotated vector.
.fi
.PP
 
.RE
.PP
\fBAuthor:\fP
.RS 4
Univ\&. of Tennessee 
.PP
Univ\&. of California Berkeley 
.PP
Univ\&. of Colorado Denver 
.PP
NAG Ltd\&. 
.RE
.PP
\fBDate:\fP
.RS 4
November 2011 
.RE
.PP
\fBFurther Details: \fP
.RS 4

.PP
.nf
  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.
.fi
.PP
 
.RE
.PP

.PP
Definition at line 104 of file zlartg\&.f\&.
.SH "Author"
.PP 
Generated automatically by Doxygen for LAPACK from the source code\&.