zlartg.f - Online Linux Manual PageSection : 3
Updated : Tue Nov 14 2017
Source : Version 3.8.0
Note : LAPACK
NAMEzlartg.f
SYNOPSIS
Functions/Subroutinessubroutine zlartg (F, G, CS, SN, R)
ZLARTG generates a plane rotation with real cosine and complex sine.
Function/Subroutine Documentation
subroutine zlartg (complex*16 F, complex*16 G, double precision CS, complex*16 SN, complex*16 R)ZLARTG generates a plane rotation with real cosine and complex sine. Purpose: 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.Parameters: F F is COMPLEX*16
The first component of vector to be rotated.
G G is COMPLEX*16
The second component of vector to be rotated.
CS CS is DOUBLE PRECISION
The cosine of the rotation.
SN SN is COMPLEX*16
The sine of the rotation.
R R is COMPLEX*16
The nonzero component of the rotated vector.Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: December 2016 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 105 of file zlartg.f.
AuthorGenerated automatically by Doxygen for LAPACK from the source code. 0
Johanes Gumabo
Data Size : 10,031 byte
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