fix printer reduced form order

src/launcher.c

@@ -126,7 +126,7 @@ void launch_computorv1(char *input)
     print_debug("-> degree: %i\n\n", degree);
 
     // print before solution
-    print_reduced_form(polynom);
+    print_reduced_form(polynom, degree);
     print_degree(polynom, degree);
 
     // solve

src/printer_equation.c

@@ -82,10 +82,12 @@ static void print_reduced_form_beautify(s_polynom *polynom)
     ft_printf("%s= 0\n", default_form);
 }
 
-void print_reduced_form(s_polynom *polynom)
+void print_reduced_form(s_polynom *polynom, int degree)
 {
     int i;
     bool is_first_term;
+    const s_polynom *found_term;
+    char sign;
 
     if (flag_beautify_mode)
         return print_reduced_form_beautify(polynom);
@@ -94,25 +96,31 @@ void print_reduced_form(s_polynom *polynom)
     ft_putstr("Reduced form: ");
     is_first_term = true;
     i = 0;
-    while (polynom[i].sign != TERM_SIGN_END)
+    while (i <= degree)
     {
+        found_term = get_term_of_power(polynom, i);
+
         // print sign
         // don't output '+' if is first term
-        if (!(polynom[i].sign == TERM_PLUS && is_first_term))
+        sign = found_term->sign == TERM_SIGN_END ? TERM_PLUS : found_term->sign;
+        if (is_first_term)
         {
-            ft_putchar(polynom[i].sign);
+            if (sign == TERM_MINUS)
+                ft_putchar(sign);
+        }
+        else
+        {
+            ft_putchar(sign);
         }
 
         // print term
         if (!is_first_term)
-        {
             ft_putchar(' ');
-        }
-        printf("%g * x^%i ", ft_fabs(polynom[i].coefficient), polynom[i].exponent);
+        printf("%g * x^%i ", ft_fabs(found_term->coefficient), i);
         fflush(stdout);
 
-        i++;
         is_first_term = false;
+        i++;
     }
     ft_putstr("= 0\n");
 }

src/solver.c

@@ -2,29 +2,6 @@
 
 #include "computorv1.h"
 
-static double get_coefficient_of_power(int power, const s_polynom *polynom)
-{
-    int i;
-    double coefficient;
-
-    // if no term found with exponent, default coefficient is 0
-    coefficient = 0;
-
-    i = 0;
-    while (polynom[i].sign != TERM_SIGN_END)
-    {
-        if (polynom[i].exponent == power)
-        {
-            coefficient = polynom[i].coefficient;
-            break;
-        }
-        i++;
-    }
-
-    print_debug("- coefficient of power '%i' : %g (polynom[%i])\n", power, coefficient, i);
-    return coefficient;
-}
-
 static double positiv_zero(double num)
 {
     if (num == 0)
@@ -120,9 +97,9 @@ void solve(const s_polynom *polynom, s_solution *solution)
     double power1;
     double power0;
 
-    power2 = get_coefficient_of_power(2, polynom);
-    power1 = get_coefficient_of_power(1, polynom);
-    power0 = get_coefficient_of_power(0, polynom);
+    power2 = get_term_of_power(polynom, 2)->coefficient;
+    power1 = get_term_of_power(polynom, 1)->coefficient;
+    power0 = get_term_of_power(polynom, 0)->coefficient;
 
     if (solution->degree == 1)
     {

src/utils/math.c

@@ -16,6 +16,21 @@ bool is_nearly_equal_zero(double num)
     return true;
 }
 
+const s_polynom *get_term_of_power(const s_polynom *polynom, int power)
+{
+    int i;
+
+    i = 0;
+    while (polynom[i].sign != TERM_SIGN_END)
+    {
+        if (polynom[i].exponent == power)
+            break;
+        i++;
+    }
+
+    return &polynom[i];
+}
+
 bool has_decimal_part(double num)
 {
     return (!is_nearly_equal(num, (int)num));