6 #include <gsl/gsl_errno.h>
7 #include <gsl/gsl_sf.h>
8 #include <gsl/gsl_siman.h>
9 #include <gsl/gsl_randist.h>
13 #define J_END_COL(i) \
14 for (j=0; j<PN; j++) gsl_matrix_set(J,i,j,J_COL[j]);
16 static inline _Bool IS_SMALL(double v) {
20 static inline double sinc(double x) {
21 return gsl_sf_sinc(x / M_PI);
24 static double *INPUT; /* dyanmic array, on main's stack */
25 static double PREP[NPREP];
27 static void prepare(double X[] /* startpoint */) {
28 /* fills in PREP and startpoint */
32 static double cb_Efunc(void *xp) {
39 for (P=0; P<NP-3; P++) {
47 static void cb_step(const gsl_rng *rng, void *xp, double step_size) {
51 gsl_ran_dir_nd(rng, N,step);
53 x[i] += step_size * step[i];
54 //printf("\n cb_step %p %10.7f [", xp, step_size);
55 //for (i=0; i<N; i++) printf(" %10.7f,", step[i]);
59 static double cb_metric(void *xp, void *yp) {
60 const double *x=xp, *y=yp;
63 for (i=0, s=0; i<N; i++) {
64 double d = x[i] - y[i];
70 static void printcore(const double *x) {
76 for (i=0; i<6; i++) printf(" %.18g,", x[i]);
77 for (i=0; i<6; i++) printf(" %.18g,", F[i]);
81 static void __attribute__((unused)) cb_print(void *xp) {
87 static double scan1double(void) {
92 if (ferror(stdin)) { perror("stdin"); exit(-1); }
93 if (feof(stdin)) exit(0);
94 if (r!=1) { fputs("bad input\n",stderr); exit(-1); }
98 int main(int argc, const char *const argv) {
104 gsl_rng *rng = gsl_rng_alloc(gsl_rng_ranlxd2);
106 double input[NINPUT]; INPUT = input;
107 double startpoint[NX];
110 /* NINPUT + 1 doubles: startpoint, epsilon for residual */
111 for (i=0; i<NINPUT; i++)
112 INPUT[i] = scan1double();
113 epsilon = scan1double();
117 gsl_siman_params_t siman_params = {
121 .t_min = epsilon * 1E-3,
122 .iters_fixed_T = 100,
131 cb_Efunc, cb_step, cb_metric,
133 0,0,0, sizeof(startpoint), siman_params);
135 printcore(startpoint);