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pcg.h
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1 #ifndef PCG_H
2 #define PCG_H
3 
4 int pcg(int n, int (*atimes) (int, double *, double *, void *),
5  int (*msolve) (int, double *, double *, int (*atimes)(int, double *, double *, void *), void *),
6  double *x, double *b, double *r, double *z, double *p, int itmax,
7  double eps, double *err, void *, double *valpha= 0, double *vbeta= 0);
8 
9 #endif //PCG_H