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// CXSparse/Source/cs_load: load a triplet matrix from a file
// CXSparse, Copyright (c) 2006-2022, Timothy A. Davis. All Rights Reserved.
// SPDX-License-Identifier: LGPL-2.1+
#include "cs.h"
/* load a triplet matrix from a file */
cs *cs_load (FILE *f)
{
double i, j ; /* use double for integers to avoid csi conflicts */
double x ;
#ifdef CS_COMPLEX
double xi ;
#endif
cs *T ;
if (!f) return (NULL) ; /* check inputs */
T = cs_spalloc (0, 0, 1, 1, 1) ; /* allocate result */
#ifdef CS_COMPLEX
while (fscanf (f, "%lg %lg %lg %lg\n", &i, &j, &x, &xi) == 4)
#else
while (fscanf (f, "%lg %lg %lg\n", &i, &j, &x) == 3)
#endif
{
#ifdef CS_COMPLEX
if (!cs_entry (T, (CS_INT) i, (CS_INT) j, x + xi*I)) return (cs_spfree (T)) ;
#else
if (!cs_entry (T, (CS_INT) i, (CS_INT) j, x)) return (cs_spfree (T)) ;
#endif
}
return (T) ;
}
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