File: cs_pvec.c

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#include "cs.h"
/* x = b(p), for dense vectors x and b; p=NULL denotes identity */
int cs_pvec (const int *p, const double *b, double *x, int n)
{
    int k ;
    if (!x || !b) return (0) ;                              /* check inputs */
    for (k = 0 ; k < n ; k++) x [k] = b [p ? p [k] : k] ;
    return (1) ;
}