/* trid-lu.h -- 三項方程式を Gauss の消去法で解く */

void trid0(int, double *, double *, double *, double *);
void trilu0(int, double *, double *, double *);
void trisol0(int, double *, double *, double *, double *);

void trid1(int, double *, double *, double *, double *);
void trilu1(int, double *, double *, double *);
void trisol1(int, double *, double *, double *, double *);