BLAS/SRC/sdsdot.f(3)

NAME
BLAS/SRC/sdsdot.f

SYNOPSIS

  Functions/Subroutines
real function sdsdot (n, sb, sx, incx, sy, incy)
SDSDOT

Function/Subroutine Documentation

  real function sdsdot (integer n, real sb, real, dimension(*) sx, integer incx, real, dimension(*) sy, integer incy)

SDSDOT

Purpose:

    !>
    !>   Compute the inner product of two vectors with extended
    !>   precision accumulation.
    !>
    !>   Returns S.P. result with dot product accumulated in D.P.
    !>   SDSDOT = SB + sum for I = 0 to N-1 of SX(LX+I*INCX)*SY(LY+I*INCY),
    !>   where LX = 1 if INCX .GE. 0, else LX = 1+(1-N)*INCX, and LY is
    !>   defined in a similar way using INCY.
    !>

Parameters
    N

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

    SB

    !>          SB is REAL
    !>          single precision scalar to be added to inner product
    !>

    SX

    !>          SX is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
    !>          single precision vector with N elements
    !>

    INCX

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

    SY

    !>          SY is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
    !>          single precision vector with N elements
    !>

    INCY

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

Author
    Lawson, C. L., (JPL), Hanson, R. J., (SNLA),

    Kincaid, D. R., (U. of Texas), Krogh, F. T., (JPL)

    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Further Details:

    !>
    !>    REFERENCES
    !>
    !>    C. L. Lawson, R. J. Hanson, D. R. Kincaid and F. T.
    !>    Krogh, Basic linear algebra subprograms for Fortran
    !>    usage, Algorithm No. 539, Transactions on Mathematical
    !>    Software 5, 3 (September 1979), pp. 308-323.
    !>
    !>    REVISION HISTORY  (YYMMDD)
    !>
    !>    791001  DATE WRITTEN
    !>    890531  Changed all specific intrinsics to generic.  (WRB)
    !>    890831  Modified array declarations.  (WRB)
    !>    890831  REVISION DATE from Version 3.2
    !>    891214  Prologue converted to Version 4.0 format.  (BAB)
    !>    920310  Corrected definition of LX in DESCRIPTION.  (WRB)
    !>    920501  Reformatted the REFERENCES section.  (WRB)
    !>    070118  Reformat to LAPACK coding style
    !>

Definition at line 112 of file sdsdot.f.

Author

Generated automatically by Doxygen for LAPACK from the source code.