BStri_mult(3) BlockSolve95 BStri_mult(3) NAME BStri_mult - Multiply the matrix (A - shift*B) by a block of vectors INPUT PARAMETERS A - a sparse matrix comm_A - the communication structure for A B - a sparse matrix comm_B - the communication structure for B v1 - the block of vectors to multiply by t1 - a block of work vectors t2 - a block of work vectors shift - the shift value in (A-shift*B) BS - the number of vectors in v1 procinfo - the usual processor stuff OUTPUT PARAMETERS v2 - the resulting block of vectors RETURNS void NOTES Different code is used to multiply a single vector than is used to multiply a block of vectors (this improves efficiency). Also different code is used if shift=0.0. If B is NULL, then we assume that it is the identity matrix. SYNOPSIS void BStri_mult(BSpar_mat *A, BScomm *comm_A, BSpar_mat *B, BScomm *comm_B, FLOAT *v1, FLOAT *v2, FLOAT *t1, FLOAT *t2, FLOAT shift, int BS, BSprocinfo *procinfo) LOCATION BlockSolve95/src/BStri_mult.c 4/4/1996 BStri_mult(3)
NAME | INPUT PARAMETERS | OUTPUT PARAMETERS | RETURNS | NOTES | SYNOPSIS | LOCATION
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