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/*
* Copyright (C) 2004-2008 Sami Pietila
* Copyright (C) 2008-2011 Robert Ancell.
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 2 of the License, or (at your option) any later
* version. See http://www.gnu.org/copyleft/gpl.html the full text of the
* license.
*/
#ifndef MP_EQUATION_H
#define MP_EQUATION_H
#include "mp.h"
typedef enum
{
PARSER_ERR_NONE = 0,
PARSER_ERR_INVALID,
PARSER_ERR_OVERFLOW,
PARSER_ERR_UNKNOWN_VARIABLE,
PARSER_ERR_UNKNOWN_FUNCTION,
PARSER_ERR_UNKNOWN_CONVERSION,
PARSER_ERR_MP
} MPErrorCode;
/* Options for parser */
typedef struct {
/* Default number base */
int base;
/* The wordlength for binary operations in bits (e.g. 8, 16, 32) */
int wordlen;
/* Units for angles (e.g. radians, degrees) */
MPAngleUnit angle_units;
// FIXME:
// int enable_builtins;
/* Data to pass to callbacks */
void *callback_data;
/* Function to check if a variable is defined */
int (*variable_is_defined)(const char *name, void *data);
/* Function to get variable values */
int (*get_variable)(const char *name, MPNumber *z, void *data);
/* Function to set variable values */
void (*set_variable)(const char *name, const MPNumber *x, void *data);
/* Function to check if a function is defined */
int (*function_is_defined)(const char *name, void *data);
/* Function to solve functions */
int (*get_function)(const char *name, const MPNumber *x, MPNumber *z, void *data);
/* Function to convert units */
int (*convert)(const MPNumber *x, const char *x_units, const char *z_units, MPNumber *z, void *data);
} MPEquationOptions;
MPErrorCode mp_equation_parse(const char *expression, MPEquationOptions *options, MPNumber *result, char **error_token);
const char *mp_error_code_to_string(MPErrorCode error_code);
int sub_atoi(const char *data);
int super_atoi(const char *data);
#endif
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