CentOS 7.0  man page for slartgp (centos section 3) 
Linux & Unix Commands  Search Man Pages 


slartgp.f(3) LAPACK slartgp.f(3)
NAME
slartgp.f 
SYNOPSIS
Functions/Subroutines
subroutine slartgp (F, G, CS, SN, R)
SLARTGP generates a plane rotation so that the diagonal is nonnegative.
Function/Subroutine Documentation
subroutine slartgp (realF, realG, realCS, realSN, realR)
SLARTGP generates a plane rotation so that the diagonal is nonnegative.
Purpose:
SLARTGP generates a plane rotation so that
[ CS SN ] . [ F ] = [ R ] where CS**2 + SN**2 = 1.
[ SN CS ] [ G ] [ 0 ]
This is a slower, more accurate version of the Level 1 BLAS routine SROTG,
with the following other 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.
The sign is chosen so that R >= 0.
Parameters:
F
F is REAL
The first component of vector to be rotated.
G
G is REAL
The second component of vector to be rotated.
CS
CS is REAL
The cosine of the rotation.
SN
SN is REAL
The sine of the rotation.
R
R is REAL
The nonzero component of the rotated vector.
This version has a few statements commented out for thread safety
(machine parameters are computed on each entry). 10 feb 03, SJH.
Author:
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Definition at line 96 of file slartgp.f.
Author
Generated automatically by Doxygen for LAPACK from the source code.
Version 3.4.2 Tue Sep 25 2012 slartgp.f(3) 



All times are GMT 4. The time now is 09:11 PM.