#include <math.h>
#include <string.h>
+#include <assert.h>
#include <gsl/gsl_errno.h>
#include <gsl/gsl_sf.h>
#include <gsl/gsl_siman.h>
#include <gsl/gsl_randist.h>
+#include <gsl/gsl_multimin.h>
#include "symbolic.c"
static double *INPUT; /* dyanmic array, on main's stack */
static double PREP[NPREP];
+#define GET_X(xg) \
+ double X[NX]; \
+ ({ int get_x_i; \
+ for (get_x_i=0; get_x_i<NX; get_x_i++) \
+ X[get_x_i] = gsl_vector_get(xg, get_x_i); \
+ })
+
static void printcore(const double *X) {
int i, j;
DECLARE_F_G;
//#define DEBUG
-static double cb_Efunc(void *xp) {
- const double *X = xp;
+static double cb_f(const gsl_vector *xg, void *params) {
int P;
+
+ GET_X(xg);
+
DECLARE_F_G;
CALCULATE_F_G;
return cost;
}
-static void cb_step(const gsl_rng *rng, void *xp, double step_size) {
+static void __attribute__((unused)) cb_step(const gsl_rng *rng, void *xp, double step_size) {
double *x = xp;
int i;
double step[NX];
//printf("]\n");
}
-static double cb_metric(void *xp, void *yp) {
+static double __attribute__((unused)) cb_metric(void *xp, void *yp) {
const double *x=xp, *y=yp;
int i;
double s;
}
static void __attribute__((unused)) cb_print(void *xp) {
- const double *x = xp;
+ GET_X(xp);
printf("\n");
- printcore(x);
+ printcore(X);
}
static double scan1double(void) {
int main(int argc, const char *const *argv) {
double epsilon;
- int i;
+ int i, r;
NP = atoi(argv[1]);
epsilon = atof(argv[2]);
- gsl_rng *rng = gsl_rng_alloc(gsl_rng_ranlxd2);
-
+ double startpoint_X[NX];
double input[NINPUT]; INPUT = input;
- double startpoint[NX];
+
+ gsl_multimin_function func = {
+ .f = cb_f,
+ .n = NX,
+ .params = 0,
+ };
+
+ gsl_vector *current_gx = gsl_vector_alloc(NX);
+ gsl_vector *step_size = gsl_vector_alloc(NX);
+ gsl_vector_set_all(step_size, 0.01);
+
+ gsl_multimin_fminimizer *minimiser =
+ gsl_multimin_fminimizer_alloc(gsl_multimin_fminimizer_nmsimplex2, NX);
for (;;) {
/* NINPUT + 1 doubles: startpoint, epsilon for residual */
for (i=0; i<NINPUT; i++)
INPUT[i] = scan1double();
- gsl_rng_set(rng,0);
+ prepare(startpoint_X);
+ for (i=0; i<NX; i++)
+ gsl_vector_set(current_gx, i, startpoint_X[i]);
- gsl_siman_params_t siman_params = {
- .k = 1.0,
- .t_initial = 0.5,
- .mu_t = 1.001,
- .t_min = epsilon * 1E-3,
- .iters_fixed_T = 100,
- .n_tries = 10,
- .step_size = 0.05,
- };
+ r = gsl_multimin_fminimizer_set(minimiser, &func, current_gx, step_size);
+ assert(!r);
- prepare(startpoint);
+ for (;;) {
+ r = gsl_multimin_fminimizer_iterate(minimiser);
+ assert(!r);
- gsl_siman_solve(rng,
- startpoint,
- cb_Efunc, cb_step, cb_metric,
- 0, // cb_print,
- 0,0,0, sizeof(startpoint), siman_params);
+ double size = gsl_multimin_fminimizer_size(minimiser);
+ if (size < epsilon) break;
+ }
- printcore(startpoint);
+ cb_print(startpoint_X);
printf("[]\n");
fflush(stdout);