SDSDOT Function

Base Operating System and Extensions Technical Reference, Volume 2

Returns the dot product of two vectors plus a constant.

BLAS Library (libblas.a)

REAL FUNCTION SDSDOT(N,B,X,INCX,Y,INCY)
INTEGER N,INCX,INCY
REAL B,X(*),Y(*)

The SDSDOT function computes the sum of constant B and dot product of vectors X and Y.

N	On entry, N specifies the number of elements in X and Y; unchanged on exit.
B	Scalar; unchanged on exit.
X	Vector of dimension at least (1 + (N-1) * abs(INCX) ); unchanged on exit.
INCX	On entry, INCX specifies the increment for the elements of X; INCX must be greater than zero; unchanged on exit.
Y	Vector of dimension at least (1 + (N-1) * abs(INCY) ); unchanged on exit.
INCY	On entry, INCY specifies the increment for the elements of Y; INCY must be greater than 0; unchanged on exit.

For values of N <= 0, the subroutine returns immediately.

Computation is performed in double precision.