ZDOTC and CDOTC compute the dot product of the complex conjugate of x with y:
DSDOT computes the dot product of two real vectors x and y and accumulates the sum into a double precision accumulator.
SDSDOT computes the dot product of two real vectors x and y, adds a real constant to the result, and then returns the result rounded to single precision.
DQDOTI computes the dot product of two double precision vectors x and y, adds a real constant, stores the result in the extended precision variable C, and then returns the value of C rounded to double precision as the result of the function.
DQDOTA computes the dot product of two double precision vectors x and y, adds B and C, stores the result in the extended precision variable C, and then returns the value of C rounded to double precision as the result of the function.

x y 
1.0 3.0 
2.0 0.0 
3.0 1.0 
Vectors x and y are orthogonal. 