From e5b2c0129539979f139dde8a024d712a60474f14 Mon Sep 17 00:00:00 2001
From: AZEN-SGG <rascatov.alex@gmail.com>
Date: Wed, 21 May 2025 22:51:04 +0300
Subject: [PATCH] In trying to solve 3

---
 2025.05.02/03Ex/solve.c |  4 ++--
 2025.05.02/05Ex/main.c  |  2 +-
 2025.05.02/05Ex/solve.c | 15 +++++++++++++++
 3 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/2025.05.02/03Ex/solve.c b/2025.05.02/03Ex/solve.c
index b89c3b3..cb6a09f 100644
--- a/2025.05.02/03Ex/solve.c
+++ b/2025.05.02/03Ex/solve.c
@@ -40,7 +40,7 @@ int t3_solve (
 	
 	for (it = 1; it <= m; ++it)
 	{
-		c = a - ((b - a) / (y_b - y_a)) * y_a;
+		c = a - ((a - b) / (y_a - y_b)) * y_a;
 		y = f(c);
 		
 		memcpy(&bits, &y, sizeof(bits));
@@ -57,7 +57,7 @@ int t3_solve (
 			b = c;
 			y_b = y;
 		}
-	}
+	}	
 	
 	if (it > m)
 		it = -1;
diff --git a/2025.05.02/05Ex/main.c b/2025.05.02/05Ex/main.c
index befd203..b2880a4 100644
--- a/2025.05.02/05Ex/main.c
+++ b/2025.05.02/05Ex/main.c
@@ -22,7 +22,7 @@ int main(int argc, char *argv[])
 			(a <= b) &&
 			(sscanf(argv[3], "%lf", &eps) == 1 && (eps >= 0)) &&
 			((sscanf(argv[4], "%d", &m) == 1) && m > 0) &&
-			((sscanf(argv[5], "%d", &k) == 1) && ((0 <= k) && (k <= len_f))))
+			((sscanf(argv[5], "%d", &k) == 1) && ((0 <= k) && (k < len_f))))
 	) {
 		fprintf(stderr, "Usage: %s a b eps M k\n", argv[0]);
 		return -1;
diff --git a/2025.05.02/05Ex/solve.c b/2025.05.02/05Ex/solve.c
index 009f9f4..0370646 100644
--- a/2025.05.02/05Ex/solve.c
+++ b/2025.05.02/05Ex/solve.c
@@ -39,6 +39,13 @@ int t5_solve (
 	else if (is_equal(b, c))
 		return -1;
 
+	if (
+		is_equal(y_a, y_b) ||
+		is_equal(y_a, y_c) ||
+		is_equal(y_b, y_c)
+	   )
+		return -3;
+
 	for (it = 1; it < m+1; ++it)
 	{
 		double *temp_pnt = 0, *inner_max_pnt;
@@ -61,6 +68,14 @@ int t5_solve (
 		   )
 			return -1;
 
+		if (
+			is_equal(y_new, y_a) ||
+			is_equal(y_new, y_c) ||
+			is_equal(y_new, y_b)
+		   )
+			return -3;
+
+
 		inner_max_pnt = fp_abs_max(&c, &b, &y_c, &y_b, &temp_pnt);	
 		*fp_abs_max(&a, inner_max_pnt, &y_a, temp_pnt, &temp_pnt) = x_new;
 		*temp_pnt = y_new;