element.h

   1 #ifndef __ELEMENT_H__
   2 #define __ELEMENT_H__
   3
   4 /* function type */
   5
   6 typedef enum {
   7     Val = 0, Id, Sig,
   8     Add, Sub,
   9     Mul, Div, Mod,
  10     Pow, Sqr,
  11     Cos, Sin, Tan, Acos, Asin, Atan,
  12     Ln, Log, Exp,
  13     Erfc, Erf,
  14     Abs, Ceil, Floor,
  15     Store, Recall, Inc, Dec, Disp, Memory, Clear,
  16     Quit, Help, History,
  17     Ans, E, Pi,
  18     Equal, Diff, Ge, Le, Gt, Lt,
  19     And, Or, Not,
  20     Cond, While, Code, Print,
  21     Prog, Arg, Call, List, Edit, Del,
  22     Get, Length, Pop, Push, Put, Set, Show,
  23     Max, Mean, Median, Min, Order, Prod, Sum, Variance,
  24     Precision, Base, Deg, Grad, Rad,
  25 } func_t;
  26
  27 /* keyword type */
  28
  29 typedef struct _keyword_t {
  30     char *keyword;
  31     func_t func;
  32     int nbops;
  33     int offset;
  34     float prio;
  35 } keyword_t;
  36
  37 /* global variables */
  38
  39 #define NB_OPERATORS 14
  40 extern keyword_t operators[];
  41
  42 #define NB_FUNCTIONS 56
  43 extern keyword_t functions[];
  44
  45 #define NB_CONSTANTS 3
  46 extern keyword_t constants[];
  47
  48 #define NB_SYMBOLS 4
  49 extern char *symbols[];
  50
  51 /* calculus element type */
  52
  53 typedef struct _element_t {
  54     func_t func;
  55     int nbops;
  56     struct _element_t **ops;
  57     double value;
  58     int prio;
  59     int hidden;
  60     char *string;
  61 } element_t;
  62
  63 #define ERROR_OP ((element_t *)(-1))
  64
  65 /* functions */
  66
  67 element_t *newelement (func_t function, int nbops, int prio);
  68 void delelement (element_t *root);
  69 element_t *dupelement (element_t *root);
  70
  71 #endif /* __ELEMENT_H__ */
  72
  73 /* vim: set ts=4 sw=4 et: */