# slartgp.f(3) [centos man page]

```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

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)```

## Check Out this Related Man Page

```slartg.f(3)							      LAPACK							       slartg.f(3)

NAME
slartg.f -

SYNOPSIS
Functions/Subroutines
subroutine slartg (F, G, CS, SN, R)
SLARTG generates a plane rotation with real cosine and real sine.

Function/Subroutine Documentation
subroutine slartg (realF, realG, realCS, realSN, realR)
SLARTG generates a plane rotation with real cosine and real sine.

Purpose:

SLARTG generate 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 BLAS1 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 without doing any
floating point operations (saves work in SBDSQR when
there are zeros on the diagonal).

If F exceeds G in magnitude, CS will be positive.

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

NAG Ltd.

Date:
September 2012

Definition at line 98 of file slartg.f.

Author
Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.2							  Tue Sep 25 2012						       slartg.f(3)```
Man Page

## check_logfiles 2.5.5.1 (Default branch)

check_logfiles is a plugin for Nagios which checks logfiles for defined patterns. It is capable of detecting logfile rotation. If you tell it how the rotated archives look, it will also examine these files. Unlike check_logfiles, traditional logfile plugins were not aware of the gap which could...