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Technical Reference: Base Operating System and Extensions , 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 + (N1) * 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 + (N1) * 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.
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