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dot product

release/4.3a0
Frank Dellaert 2009-12-11 21:37:40 +00:00
parent 76b55aba7d
commit bca489384e
1 changed files with 3 additions and 0 deletions
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cpp/Vector.h
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@ -142,6 +142,9 @@ Vector ediv(const Vector &a, const Vector &b);
*/ */
double sum(const Vector &a); double sum(const Vector &a);
/** Dot product */
inline double dot(const Vector &a, const Vector& b) { return sum(emul(a,b)); }
/** /**
* house(x,j) computes HouseHolder vector v and scaling factor beta * house(x,j) computes HouseHolder vector v and scaling factor beta
* from x, such that the corresponding Householder reflection zeroes out * from x, such that the corresponding Householder reflection zeroes out