forked from KolibriOS/kolibrios
32 lines
969 B
C
32 lines
969 B
C
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#ifndef PARSER_H
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#define PARSER_H
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void set_exp(char* exp, double x);
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void putback(double* hold); // puts the token back to line
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int get_exp(double* hold); // gets the expression. This function is used externally
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void level2(double* hold); // works with +-
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void level3(double* hold); // works with */%
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void level4(double* hold); // works with ^
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void level5(double* hold); // works with ()
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void level6(double* hold); // works with elementary tokens
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void primitive(double* hold); // gets value of number, function or variable
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void arith(char op, double* r, double* h); // performs arithmetical operation
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void unary(char op, double* r); // performs unary (one-operand) operation
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double find_var(const char* s); // gets variable value by name
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void serror(int code); // stops execution of parser and return error code
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int look_up(const char* s); // checks the function table to see if such a function exists
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#endif /* PARSER_H */
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