.TH "clartg.f" 3 "Wed Oct 15 2014" "Version 3.4.2" "LAPACK" \" -*- nroff -*-
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.SH NAME
clartg.f \- 
.SH SYNOPSIS
.br
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.SS "Functions/Subroutines"

.in +1c
.ti -1c
.RI "subroutine \fBclartg\fP (F, G, CS, SN, R)"
.br
.RI "\fI\fBCLARTG\fP generates a plane rotation with real cosine and complex sine\&. \fP"
.in -1c
.SH "Function/Subroutine Documentation"
.PP 
.SS "subroutine clartg (complexF, complexG, realCS, complexSN, complexR)"

.PP
\fBCLARTG\fP generates a plane rotation with real cosine and complex sine\&.  
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\fBPurpose: \fP
.RS 4

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.nf
 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.
.fi
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.RE
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\fBParameters:\fP
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\fIF\fP 
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          F is COMPLEX
          The first component of vector to be rotated.
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\fIG\fP 
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          G is COMPLEX
          The second component of vector to be rotated.
.fi
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\fICS\fP 
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          CS is REAL
          The cosine of the rotation.
.fi
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.br
\fISN\fP 
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          SN is COMPLEX
          The sine of the rotation.
.fi
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.br
\fIR\fP 
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          R is COMPLEX
          The nonzero component of the rotated vector.
.fi
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.RE
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\fBAuthor:\fP
.RS 4
Univ\&. of Tennessee 
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Univ\&. of California Berkeley 
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Univ\&. of Colorado Denver 
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NAG Ltd\&. 
.RE
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\fBDate:\fP
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November 2013 
.RE
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\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
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.RE
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Definition at line 104 of file clartg\&.f\&.
.SH "Author"
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Generated automatically by Doxygen for LAPACK from the source code\&.