Started Example

2025.05.02/Example/solve.c

@@ -0,0 +1,53 @@
+#include "solve.h"
+#include "status.h"
+
+#include <math.h>
+
+status t1_solve (
+		double (*f) (double), 
+		double a, double b, 
+		double eps, int m, double *x, 
+		int *m_cl, int *m_it
+) {
+	static int it = 0
+	int cl = 0;
+	double y_a = f(a), y_b = f(b);
+	
+	it++;
+
+	if (y_a * y_b >= -DBL_EPSILON)
+	{
+		*x = DBL_MAX;
+		return MORE_ONE_ROOT;
+	}
+	
+	for (cl = 0; cl < m; ++cl)
+	{
+		double c = (a + b) * 0.5;
+		double y = f(c);
+		
+		if (fabs(y) < eps)
+		{
+			*x = c;
+			break;
+		} else if (y * y_a > DBL_EPSILON)
+		{
+			a = c;
+			y_a = y;
+		} else if (y * y_b > DBL_EPSILON)
+		{
+			b = c;
+			y_b = y;
+		}
+	}
+	
+	*m_it = it;
+	*cl = cl;
+	*x = c;
+
+	if (cl >= m)
+		return RUN_TIME;
+
+	return SUCCESS;
+}
+