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AZEN-SGG 2025-05-23 00:39:50 +03:00
parent 3c3c94b028
commit 056e721d9a
34 changed files with 718 additions and 559 deletions
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59
2025.05.02/dist/Krivoruchenko_SK/solve_04.c vendored Normal file
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#include "solve_04.h"
#include "comp.h"
#include <math.h>
#include <float.h>
int t4_solve (
double (*f) (double),
double a, double b,
double eps, int m, double *x
) {
int it = 0;
double c = DBL_MAX, y, y_a = f(a), y_b = f(b);
if (is_eps(y_a, eps))
{
*x = a;
return 1;
} if (is_eps(y_b, eps))
{
*x = b;
return 1;
} if (is_equal(fabs(y_b), fabs(y_a)))
{
*x = a;
return -1;
}
for (it = 1; it <= m; ++it)
{
// c = b - ((b - a) / (y_b - y_a)) * y_b;
c = a - ((b - a) / (y_b - y_a)) * y_a;
y = f(c);
if (is_eps(y, eps))
break;
else if (fabs(y_a) - fabs(y_b) > DBL_EPSILON)
{
a = c;
y_a = y;
} else
// if (fabs(y_b) - fabs(y_a) > DBL_EPSILON)
{
b = c;
y_b = y;
}
if (is_equal(y_a, y_b))
it = m+1;
}
if (it > m)
it = -1;
*x = c;
return it;
}