/* $Id: shoot_optim3d.h 4875 2012-08-30 20:04:30Z john $ */
/* (c) John Ashburner (2011) */
extern void fmg3(mwSize n0[], float *a0, float *b0, double param[], int c, int nit,
                 float *u0, float *scratch);
extern void cgs3(mwSize dm[], float A[], float b[], double param[], double tol, int nit,
                 float x[], float r[], float p[], float Ap[]);
extern void resize(mwSize na[], float *a, mwSize nc[], float *c, float *b);
extern void restrict_vol(mwSize na[], float *a, mwSize nc[], float *c, float *b);
extern float norm(mwSize m, float a[]);
extern mwSize fmg3_scratchsize(mwSize n0[], int use_hessian);