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/*
* HardInfo - Displays System Information
* Copyright (C) 2003-2007 Leandro A. F. Pereira <leandro@linuxmag.com.br>
*
* 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, version 2.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __EXPR_H__
#define __EXPR_H__
typedef struct _MathToken MathToken;
typedef enum {
TOKEN_OPERATOR,
TOKEN_VARIABLE,
TOKEN_VALUE
} MathTokenType;
struct _MathToken {
union {
gfloat value;
gchar op;
} val;
MathTokenType type;
};
#define math_postfix_free math_infix_free
GSList *math_infix_to_postfix(GSList *infix);
void math_infix_free(GSList *infix, gboolean free_tokens);
GSList *math_string_to_infix(gchar *string);
GSList *math_string_to_postfix(gchar *string);
gfloat math_postfix_eval(GSList *postfix, gfloat at_value);
gfloat math_string_eval(gchar *string, gfloat at_value);
#endif /* __EXPR_H__ */
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