add positiv_zero in output

headers/computorv1.h

@@ -206,6 +206,7 @@ void print_solution(s_solution *solution);
 bool is_nearly_equal(double num, int compare);
 bool is_nearly_equal_zero(double num);
 const s_polynom *get_term_of_power(const s_polynom *polynom, int power);
+double positiv_zero(double num);
 bool has_decimal_part(double num);
 bool any_has_decimal_part(double *num, size_t len);
 int gcd_int(int a, int b);

src/printer_solutions.c

@@ -129,14 +129,14 @@ static void print_solution_pure_radicand_negativ(s_solution_degree_2_pure soluti
 static void print_solution_delta_zero(s_solution_degree_2 solution)
 {
     ft_printf("Discriminant is equal to zero, the solution is:\n");
-    printf("%g\n", solution.left_term);
+    printf("%g\n", positiv_zero(solution.left_term));
 }
 
 static void print_solution_delta_positiv(s_solution_degree_2 solution)
 {
     ft_printf("Discriminant is strictly positive, the two solutions are:\n");
-    printf("%g\n", solution.left_term + solution.right_term);
-    printf("%g\n", solution.left_term - solution.right_term);
+    printf("%g\n", positiv_zero(solution.left_term + solution.right_term));
+    printf("%g\n", positiv_zero(solution.left_term - solution.right_term));
 }
 
 static void print_solution_delta_negativ(s_solution_degree_2 solution)
@@ -154,7 +154,7 @@ static void print_solution_delta_negativ(s_solution_degree_2 solution)
 
     if (solution.all_int)
     {
-        denominator = solution.a * 2;
+        denominator = positiv_zero(solution.a * 2);
         denominator_abs = ft_fabs(denominator);
         denominator_sign = ft_fsign(denominator);
         // solution 1
@@ -167,7 +167,7 @@ static void print_solution_delta_negativ(s_solution_degree_2 solution)
             printf("- ");
         else if (has_first_term)
             printf("+ "); // dont print '+' if it's first term
-        printf("%gi/%g\n", solution.delta_sqrt, denominator_abs);
+        printf("%gi/%g\n", positiv_zero(solution.delta_sqrt), denominator_abs);
 
         // solution 2
         if (!is_nearly_equal_zero(solution.b))
@@ -179,11 +179,11 @@ static void print_solution_delta_negativ(s_solution_degree_2 solution)
             printf("- ");
         else if (has_first_term)
             printf("+ "); // dont print '+' if it's first term
-        printf("%gi/%g\n", solution.delta_sqrt, denominator_abs);
+        printf("%gi/%g\n", positiv_zero(solution.delta_sqrt), denominator_abs);
     }
     else
     {
-        right_term_abs = ft_fabs(solution.right_term);
+        right_term_abs = positiv_zero(ft_fabs(solution.right_term));
         right_term_sign = ft_fsign(solution.right_term);
 
         // solution 1

src/solver.c

@@ -2,13 +2,6 @@
 
 #include "computorv1.h"
 
-static double positiv_zero(double num)
-{
-    if (num == 0)
-        return 0;
-    return num;
-}
-
 static void solve_degree_1(s_solution_degree_1 *solution, double a, double b)
 {
     solution->a = a;

src/utils/math.c

@@ -31,6 +31,13 @@ const s_polynom *get_term_of_power(const s_polynom *polynom, int power)
     return &polynom[i];
 }
 
+double positiv_zero(double num)
+{
+    if (is_nearly_equal_zero(num))
+        return 0.0;
+    return num;
+}
+
 bool has_decimal_part(double num)
 {
     return (!is_nearly_equal(num, (int)num));

tester.sh

@@ -170,17 +170,17 @@ run_test \
 Reduced form: 0 * x^0 + 2 * x^1 + 3 * x^2 = 0
 Polynomial degree: 2
 Discriminant is strictly positive, the two solutions are:
-2.66667
--3.33333"
+0
+-0.666667"
 
 run_test \
 "6. degree 2" \
 "3.4 * x^2 + 1 * x^1 - 2.0 * x^0 = 5.123 * x^1" "\
-Reduced form: 2 * x^0 - 4.123 * x^1 + 3.4 * x^2 = 0
+Reduced form: -2 * x^0 - 4.123 * x^1 + 3.4 * x^2 = 0
 Polynomial degree: 2
-Discriminant is strictly negative, the two complex solutions are:
-4.123/6.8 + 3.19388i/6.8
-4.123/6.8 - 3.19388i/6.8"
+Discriminant is strictly positive, the two solutions are:
+1.58401
+-0.371359"
 
 run_test \
 "7. float exponent" \
@@ -191,7 +191,7 @@ error
 run_test \
 "8. degree 4" \
 "3x^2 + 2x -7x^4 = x^4" "\
-Reduced form: 0 * x^0 + 2 * x^1 + 3 * x^2 + 6 * x^4 = 0
+Reduced form: 0 * x^0 + 2 * x^1 + 3 * x^2 + 0 * x^3 - 8 * x^4 = 0
 Polynomial degree: 4
 The polynomial degree is strictly greater than 2, I can't solve."