170 lines
4.0 KiB
C
170 lines
4.0 KiB
C
/* computorv1.h */
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#ifndef COMPUTORV1_H
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#define COMPUTORV1_H
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#include "libft.h"
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#include <stdio.h> // tmp for printf, for float debug
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#include <stdarg.h> // for va_list
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#include <stdbool.h>
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#include <errno.h> // for errno
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#include <string.h> // for strerror
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/** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* MAIN.C
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*/
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typedef enum
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{
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MODE_ARGV, //
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MODE_STDIN, //
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MODE_LOOP, //
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} e_program_mode;
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/** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* COMPUTORV1.C
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*/
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void launch_computorv1(char *input);
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/** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* LEXER.C
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*/
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typedef enum
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{
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TOKEN_VARIABLE, // x, y, etc.
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TOKEN_NUMBER_INT, // int
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TOKEN_NUMBER_DOUBLE, // double
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TOKEN_NUMBER_INT_SUPER, // superscript int, like '²'
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TOKEN_POWER, // ^ or **
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TOKEN_SIGN_PLUS, // +
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TOKEN_SIGN_MINUS, // -
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TOKEN_FACTOR_MULT, // *
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TOKEN_FACTOR_DIV, // / or :
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TOKEN_EQUAL, // =
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TOKEN_END // null (end of input)
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} e_token_type;
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typedef enum
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{
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TOKEN_NO_TAG,
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TOKEN_NUMBER,
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TOKEN_SIGN,
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TOKEN_FACTOR,
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} e_token_tag;
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typedef struct
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{
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e_token_type type;
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e_token_tag tag;
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union
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{
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char value_char;
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int value_int;
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double value_double;
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};
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} s_token;
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void lexerize(const char *input, s_token *tokens);
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/** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* PARSER.C
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*/
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typedef enum
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{
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TERM_LEFT, // a in "a = b"
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TERM_RIGHT, // b in "a = b"
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TERM_END, // last term
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} e_term_position;
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typedef enum
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{
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TERM_PLUS, // +
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TERM_MINUS, // -
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TERM_NULL, // null -> for the last term
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} e_term_sign;
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typedef struct
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{
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e_term_position position;
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e_term_sign sign;
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double coefficient;
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int exponent;
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} s_term;
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void parse(s_token *tokens, s_term *terms, int terms_count_max);
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/** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* REDUCE.C
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*/
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void reduce(s_term *terms, double *polynom);
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/** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* SOLVE.C
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*/
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typedef enum
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{
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DELTA_PLUS, // +
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DELTA_MINUS, // -
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DELTA_ZERO, // 0
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} e_delta_sign;
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typedef struct
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{
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e_delta_sign delta_sign; // DELTA_PLUS or DELTA_MINUS or DELTA_ZERO
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double delta_absolute; // |Δ| == |b² - 4ac|
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int first_term_pgcd; // pgcd(b, 2a)
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int first_term_numerator; // -b / pgcd
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int first_term_denominator; // 2a / pgcd
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double first_term; // double (-b / 2a)
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int second_term_pgcd; // pgcd(√|Δ|, 2a)
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int second_term_numerator; // √|Δ| / pgcd
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int second_term_denominator; // 2a / pgcd
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double second_term; // double (√|Δ| / 2a)
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double solution1; // first_term + second_term
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double solution2; // first_term - second_term
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} s_solution;
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void solve(const double *polynom, s_solution *solution);
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/** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* UTILS/ERRORS.C
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*/
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void print_state();
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void stop_errors(const char *format, ...);
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/** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* UTILS/PRINT_ENUMS.C
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*/
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const char *token_type_to_str(e_token_type type);
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const char *token_tag_to_str(e_token_tag tag);
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const char *term_position_to_str(e_term_position pos);
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const char *term_sign_to_str(e_term_sign sign);
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const char *delta_sign_to_str(e_delta_sign sign);
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/** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* UTILS/PRINTER.C
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*/
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void print_debug(const char *description, ...);
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/** * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* GLOBALS
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*/
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extern char *input_g_err;
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extern s_token *tokens_g_err;
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extern s_term *terms_g_err;
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extern double *polynom_g_err;
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extern int polynom_len_g_err;
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extern bool flag_debug_mode;
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extern bool flag_loop_mode;
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extern s_solution *solution_g_err;
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#endif |