org.netlib.blas
Class Srotm
java.lang.Object
org.netlib.blas.Srotm
public class Srotm
- extends java.lang.Object
Following is the description from the original
Fortran source. For each array argument, the Java
version will include an integer offset parameter, so
the arguments may not match the description exactly.
Contact seymour@cs.utk.edu with any questions.
* ..
*
* Purpose
* =======
*
* APPLY THE MODIFIED GIVENS TRANSFORMATION, H, TO THE 2 BY N MATRIX
*
* (SX**T) , WHERE **T INDICATES TRANSPOSE. THE ELEMENTS OF SX ARE IN
* (DX**T)
*
* SX(LX+I*INCX), I = 0 TO N-1, WHERE LX = 1 IF INCX .GE. 0, ELSE
* LX = (-INCX)*N, AND SIMILARLY FOR SY USING USING LY AND INCY.
* WITH SPARAM(1)=SFLAG, H HAS ONE OF THE FOLLOWING FORMS..
*
* SFLAG=-1.E0 SFLAG=0.E0 SFLAG=1.E0 SFLAG=-2.E0
*
* (SH11 SH12) (1.E0 SH12) (SH11 1.E0) (1.E0 0.E0)
* H=( ) ( ) ( ) ( )
* (SH21 SH22), (SH21 1.E0), (-1.E0 SH22), (0.E0 1.E0).
* SEE SROTMG FOR A DESCRIPTION OF DATA STORAGE IN SPARAM.
*
*
* Arguments
* =========
*
* N (input) INTEGER
* number of elements in input vector(s)
*
* SX (input/output) REAL array, dimension N
* double precision vector with 5 elements
*
* INCX (input) INTEGER
* storage spacing between elements of SX
*
* SY (input/output) REAL array, dimension N
* double precision vector with N elements
*
* INCY (input) INTEGER
* storage spacing between elements of SY
*
* SPARAM (input/output) REAL array, dimension 5
* SPARAM(1)=SFLAG
* SPARAM(2)=SH11
* SPARAM(3)=SH21
* SPARAM(4)=SH12
* SPARAM(5)=SH22
*
* =====================================================================
*
* .. Local Scalars ..
Field Summary |
static float |
two
|
static float |
zero
|
Constructor Summary |
Srotm()
|
Method Summary |
static void |
srotm(int n,
float[] sx,
int _sx_offset,
int incx,
float[] sy,
int _sy_offset,
int incy,
float[] sparam,
int _sparam_offset)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
zero
public static float zero
two
public static float two
Srotm
public Srotm()
srotm
public static void srotm(int n,
float[] sx,
int _sx_offset,
int incx,
float[] sy,
int _sy_offset,
int incy,
float[] sparam,
int _sparam_offset)