cs_lsolve.c
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00001 #include "cs.h"
00002 /* solve Lx=b where x and b are dense.  x=b on input, solution on output. */
00003 int cs_lsolve (const cs *L, double *x)
00004 {
00005     int p, j, n, *Lp, *Li ;
00006     double *Lx ;
00007     if (!CS_CSC (L) || !x) return (0) ;                     /* check inputs */
00008     n = L->n ; Lp = L->p ; Li = L->i ; Lx = L->x ;
00009     for (j = 0 ; j < n ; j++)
00010     {
00011         x [j] /= Lx [Lp [j]] ;
00012         for (p = Lp [j]+1 ; p < Lp [j+1] ; p++)
00013         {
00014             x [Li [p]] -= Lx [p] * x [j] ;
00015         }
00016     }
00017     return (1) ;
00018 }


hogman_minimal
Author(s): Maintained by Juergen Sturm
autogenerated on Mon Oct 6 2014 00:06:58