-enum method_t { MAXMIN, LAGRANGE_RENO, LAGRANGE_VEGAS };
-
-static lmm::System* new_system(method_t method)
-{
- /* selective update would need real actions instead of NULL as a first parameter to the variable constructor */
- switch (method) {
- case MAXMIN:
- return lmm::make_new_maxmin_system(false);
- case LAGRANGE_VEGAS:
- case LAGRANGE_RENO:
- return lmm::make_new_lagrange_system(false);
- default:
- xbt_die("Invalid method");
- }
-}
-
-static double dichotomy(double func(double), double min, double max, double min_error)
-{
- double overall_error = 2 * min_error;
-
- double min_func = func(min);
- double max_func = func(max);
-
- if (min_func > 0 && max_func > 0)
- return min - 1.0;
- if (min_func < 0 && max_func < 0)
- return max + 1.0;
- if (min_func > 0 && max_func < 0)
- abort();
-
- SHOW_EXPR(min_error);
-
- while (overall_error > min_error) {
- SHOW_EXPR(overall_error);
- xbt_assert(min_func <= 0 || max_func <= 0);
- xbt_assert(min_func >= 0 || max_func >= 0);
- xbt_assert(min_func <= 0 || max_func >= 0);
-
- SHOW_EXPR(min);
- SHOW_EXPR(min_func);
- SHOW_EXPR(max);
- SHOW_EXPR(max_func);
-
- double middle = (max + min) / 2.0;
- if (fabs(min - middle) < 1e-12 || fabs(max - middle) < 1e-12) {
- break;
- }
- double middle_func = func(middle);
- SHOW_EXPR(middle);
- SHOW_EXPR(middle_func);
-
- if (middle_func < 0) {
- min = middle;
- min_func = middle_func;
- overall_error = max_func - middle_func;
- } else if (middle_func > 0) {
- max = middle;
- max_func = middle_func;
- overall_error = middle_func - min_func;
- } else {
- overall_error = 0;
- }
- }
- return ((min + max) / 2.0);
-}
-
-double a_test_1 = 0;
-double b_test_1 = 0;
-static double diff_lagrange_test_1(double x)
-{
- return -(3 / (1 + 3 * x * x / 2) - 3 / (2 * (3 * (a_test_1 - x) * (a_test_1 - x) / 2 + 1)) +
- 3 / (2 * (3 * (b_test_1 - a_test_1 + x) * (b_test_1 - a_test_1 + x) / 2 + 1)));
-}
-
-static void test1(method_t method)