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fix complex sign operation

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This commit is contained in:
hugogogo
2026-05-15 02:18:50 +02:00
parent b185647d2b
commit f25291f12f
5 changed files with 232 additions and 182 deletions
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2
src/lexer.c
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@@ -100,7 +100,7 @@ static bool token_is_number_double(const char *input, int input_pos, int *token_
return true;
}
// token is superscript int (e.g., ², ³, ⁴, ⁵, etc.)
// token is superscript int (e.g., ¹, ², ³, ⁴, ⁵, etc.)
static bool token_is_number_int_super(const char *input, int input_pos, int *token_size)
{
int digit_size = 0;

66
src/printer_solutions.c
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@@ -141,36 +141,76 @@ static void print_solution_delta_positiv(s_solution_degree_2 solution)
static void print_solution_delta_negativ(s_solution_degree_2 solution)
{
double denominator;
double denominator_abs;
int denominator_sign;
double right_term_abs;
int right_term_sign;
bool has_first_term;
ft_printf("Discriminant is strictly negative, the two complex solutions are:\n");
has_first_term = false;
if (solution.all_int)
{
denominator = solution.a * 2;
denominator_abs = ft_fabs(denominator);
denominator_sign = ft_fsign(denominator);
// solution 1
if (!is_nearly_equal_zero(solution.b))
printf("%g/%g + ", solution.b * -1, solution.a * 2);
printf("%gi/%g\n", solution.delta_sqrt, solution.a * 2);
{
has_first_term = true;
printf("%g/%g ", solution.b * -1 * denominator_sign, denominator_abs);
}
if (denominator_sign == -1)
printf("- ");
else if (has_first_term)
printf("+ "); // dont print '+' if it's first term
printf("%gi/%g\n", solution.delta_sqrt, denominator_abs);
// solution 2
if (!is_nearly_equal_zero(solution.b))
printf("%g/%g - ", solution.b * -1, solution.a * 2);
else
printf("-");
printf("%gi/%g\n", solution.delta_sqrt, solution.a * 2);
{
has_first_term = true;
printf("%g/%g ", solution.b * -1 * denominator_sign, denominator_abs);
}
if (denominator_sign == 1)
printf("- ");
else if (has_first_term)
printf("+ "); // dont print '+' if it's first term
printf("%gi/%g\n", solution.delta_sqrt, denominator_abs);
}
else
{
right_term_abs = ft_fabs(solution.right_term);
right_term_sign = ft_fsign(solution.right_term);
// solution 1
if (!is_nearly_equal_zero(solution.left_term))
printf("%g + ", solution.left_term);
if (!is_nearly_equal_zero(solution.right_term))
printf("i * %g\n", solution.right_term);
{
has_first_term = true;
printf("%g ", solution.left_term);
}
if (right_term_sign == -1)
printf("- ");
else if (has_first_term)
printf("+ "); // dont print '+' if it's first term
if (!is_nearly_equal_zero(right_term_abs))
printf("%g*i\n", right_term_abs);
// solution 2
if (!is_nearly_equal_zero(solution.left_term))
printf("%g - ", solution.left_term);
else
printf("-");
printf("i * %g\n", solution.right_term);
{
has_first_term = true;
printf("%g ", solution.left_term);
}
if (right_term_sign == 1)
printf("- ");
else if (has_first_term)
printf("+ "); // dont print '+' if it's first term
if (!is_nearly_equal_zero(right_term_abs))
printf("%g*i\n", right_term_abs);
}
}

12
src/solver.c
View File

@@ -28,11 +28,11 @@ static void solve_degree_2(s_solution_degree_2 *solution, double a, double b, do
solution->c = c;
delta = b * b - 4 * a * c;
solution->delta = delta; // Δ == b² - 4ac
solution->delta_sign = ft_fsign(delta); // DELTA_PLUS or DELTA_MINUS or DELTA_ZERO
solution->delta_absolute = ft_fabs(delta); // |Δ|
solution->delta_sqrt = ft_sqrt(solution->delta_absolute, DOUBLE_PRECISION); // √|Δ|
delta_sqrt = solution->delta_sqrt;
solution->delta = delta; // Δ == b² - 4ac
solution->delta_sign = ft_fsign(delta); // DELTA_PLUS or DELTA_MINUS or DELTA_ZERO
solution->delta_absolute = ft_fabs(delta); // |Δ|
delta_sqrt = ft_sqrt(solution->delta_absolute, DOUBLE_PRECISION); // √|Δ|
solution->delta_sqrt = delta_sqrt;
/**
* SOLVE LEFT AND RIGHT TERMS AS DOUBLES
@@ -41,7 +41,7 @@ static void solve_degree_2(s_solution_degree_2 *solution, double a, double b, do
if (!is_nearly_equal_zero(b))
solution->left_term = positiv_zero(-b / (2 * a)); // -b / 2a
if (!is_nearly_equal_zero(delta))
solution->right_term = positiv_zero(delta_sqrt / 2 * a); // √|Δ| / 2a
solution->right_term = positiv_zero(delta_sqrt / (2 * a)); // √|Δ| / 2a
/**
* COMPLEX : SOLVE TERMS AS FRACTIONS