Coverage Report

Created: 2023-09-25 06:05

/src/igraph/vendor/cs/cs_lsolve.c
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#include "cs.h"
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/* solve Lx=b where x and b are dense.  x=b on input, solution on output. */
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CS_INT cs_lsolve (const cs *L, CS_ENTRY *x)
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{
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    CS_INT p, j, n, *Lp, *Li ;
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    CS_ENTRY *Lx ;
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    if (!CS_CSC (L) || !x) return (0) ;                     /* check inputs */
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    n = L->n ; Lp = L->p ; Li = L->i ; Lx = L->x ;
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    for (j = 0 ; j < n ; j++)
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    {
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        x [j] /= Lx [Lp [j]] ;
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        for (p = Lp [j]+1 ; p < Lp [j+1] ; p++)
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        {
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            x [Li [p]] -= Lx [p] * x [j] ;
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        }
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    }
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    return (1) ;
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}