org.netlib.blas
Class Srotm

java.lang.Object
  extended by 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
 

Field Detail

zero

public static float zero

two

public static float two
Constructor Detail

Srotm

public Srotm()
Method Detail

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)