BLAS/SRC/srotm.f(3)        Library Functions Manual        BLAS/SRC/srotm.f(3)

NAME
       BLAS/SRC/srotm.f

SYNOPSIS
   Functions/Subroutines
       subroutine srotm (n, sx, incx, sy, incy, sparam)
           SROTM

Function/Subroutine Documentation
   subroutine srotm (integer n, real, dimension(*) sx, integer incx, real,
       dimension(*) sy, integer incy, real, dimension(5) sparam)
       SROTM

       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
           !>    (SX**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.
           !>
           !>

       Parameters
           N

           !>          N is INTEGER
           !>         number of elements in input vector(s)
           !>

           SX

           !>          SX is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
           !>

           INCX

           !>          INCX is INTEGER
           !>         storage spacing between elements of SX
           !>

           SY

           !>          SY is REAL array, dimension ( 1 + ( N - 1 )*abs( INCY ) )
           !>

           INCY

           !>          INCY is INTEGER
           !>         storage spacing between elements of SY
           !>

           SPARAM

           !>          SPARAM is REAL array, dimension (5)
           !>     SPARAM(1)=SFLAG
           !>     SPARAM(2)=SH11
           !>     SPARAM(3)=SH21
           !>     SPARAM(4)=SH12
           !>     SPARAM(5)=SH22
           !>

       Author
           Univ. of Tennessee


           Univ. of California Berkeley


           Univ. of Colorado Denver


           NAG Ltd.

       Definition at line 96 of file srotm.f.

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

LAPACK                          Version 3.12.0             BLAS/SRC/srotm.f(3)