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}
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}
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/**
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/**
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 * Apply Householder transformations and the row permutation P to y
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 * Apply Householder transformations and the row permutation P to y
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 *
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 *
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 * @param a sparse matrix containing the vectors defining the
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 * @param V sparse matrix containing the vectors defining the
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 *        Householder transformations
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 *        Householder transformations
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 * @param beta scaling factors for the Householder transformations
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 * @param beta scaling factors for the Householder transformations
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 * @param y contents of a V->m by nrhs dense matrix
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 * @param p 0-based permutation vector of length V->m
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 * @param p 0-based permutation vector of length V->m
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 * @param nrhs number of right hand sides (i.e. ncol(y))
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 * @param trans logical value - if TRUE create Q'y[p] otherwise Qy[p]
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 * @param trans logical value - if TRUE create Q'y[p] otherwise Qy[p]
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 * @param y contents of a V->m by nrhs dense matrix
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 * @param ydims dimensions of y
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 */
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 */
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static
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static
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void sparseQR_Qmult(cs *V, double *beta, int *p, int trans,
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void sparseQR_Qmult(cs *V, double *beta, int *p, int trans,
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		    double *y, int *ydims)
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		    double *y, int *ydims)
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{
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{