dot product
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				|  | @ -142,6 +142,9 @@ Vector ediv(const Vector &a, const Vector &b); | |||
|  */ | ||||
| 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 | ||||
|  *  from x, such that the corresponding Householder reflection zeroes out | ||||
|  |  | |||
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