7 #include <gsl/gsl_errno.h>
8 #include <gsl/gsl_sf.h>
9 #include <gsl/gsl_siman.h>
10 #include <gsl/gsl_randist.h>
14 #define J_END_COL(i) \
15 for (j=0; j<PN; j++) gsl_matrix_set(J,i,j,J_COL[j]);
17 static inline _Bool IS_SMALL(double v) {
21 static inline double sinc(double x) {
22 return gsl_sf_sinc(x / M_PI);
26 static double *INPUT; /* dyanmic array, on main's stack */
27 static double PREP[NPREP];
29 static void printcore(const double *X) {
36 printf(" %25.18g,", POINT(i)[j]);
40 static void prepare(double X[] /* startpoint */) {
41 /* fills in PREP and startpoint */
47 static double cb_Efunc(void *xp) {
58 printf(" %7.4f", POINT(P)[j]);
68 static void cb_step(const gsl_rng *rng, void *xp, double step_size) {
72 gsl_ran_dir_nd(rng, NX, step);
74 x[i] += step_size * step[i];
75 //printf("\n cb_step %p %10.7f [", xp, step_size);
76 //for (i=0; i<N; i++) printf(" %10.7f,", step[i]);
80 static double cb_metric(void *xp, void *yp) {
81 const double *x=xp, *y=yp;
84 for (i=0, s=0; i<NX; i++) {
85 double d = x[i] - y[i];
91 static void __attribute__((unused)) cb_print(void *xp) {
97 static double scan1double(void) {
102 if (ferror(stdin)) { perror("stdin"); exit(-1); }
103 if (feof(stdin)) exit(0);
104 if (r!=1) { fputs("bad input\n",stderr); exit(-1); }
108 int main(int argc, const char *const *argv) {
113 epsilon = atof(argv[2]);
115 gsl_rng *rng = gsl_rng_alloc(gsl_rng_ranlxd2);
117 double input[NINPUT]; INPUT = input;
118 double startpoint[NX];
121 /* NINPUT + 1 doubles: startpoint, epsilon for residual */
122 for (i=0; i<NINPUT; i++)
123 INPUT[i] = scan1double();
127 gsl_siman_params_t siman_params = {
131 .t_min = epsilon * 1E-3,
132 .iters_fixed_T = 100,
141 cb_Efunc, cb_step, cb_metric,
143 0,0,0, sizeof(startpoint), siman_params);
145 printcore(startpoint);