/*
 *  calculator.h
 *  Wcalc
 *
 *  Created by Kyle Wheeler on Thu Feb 07 2002.
 *  Copyright (c) 2001 Kyle Wheeler. All rights reserved.
 *
 */

#ifndef WCALC_CALCULATOR_H
#define WCALC_CALCULATOR_H

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "definitions.h"

#include "number.h"

#ifdef EBUG
#include <stdio.h>
#define Dprintf(fmt, ...) \
	fprintf(stderr, "[%s:%d] " fmt, __FILE__, __LINE__, ##__VA_ARGS__); \
	fflush(stderr);
#else
#define Dprintf(...) ;
#endif

enum functions
{ wnot,
    wbnot,
    wsin,
    wcos,
    wtan,
    wcot,
    wsec,
    wcsc,
    wasin,
    wacos,
    watan,
    wacot,
    wasec,
    wacsc,
    wsinh,
    wcosh,
    wtanh,
    wcoth,
    wsech,
    wcsch,
    wasinh,
    wacosh,
    watanh,
    wacoth,
    wasech,
    wacsch,
    wlog,
    wlogtwo,
    wln,
    wround,
    wneg,
    wabs,
    wsqrt,
    wfloor,
    wceil,
    wrand,
    wirand,
    wexp,
    wfact,
    wcomp,
    weint,
    wgamma,
    wlngamma,
    wzeta,
    wsinc,
    wcbrt
};
enum operations
{ wplus,
    wminus,
    wmult,
    wdiv,
    wmod,
    wpow,
    wor,
    wbor,
    wbxor,
    wand,
    wband,
    wequal,
    wnequal,
    wgt,
    wlt,
    wrshft,
    wlshft,
    wgeq,
    wleq,
    wnone
};
enum commands
{ redisplay, nothing };

void parseme(const char *);
void report_error(const char * fmt, ...);
void display_and_clear_errstring(void);
void set_prettyanswer(const Number num);
char *print_this_result(const Number result);
void uber_function(Number output, const enum functions func, Number input);
void simple_exp(Number output, const Number first, const enum operations op,
				const Number second);
int seed_random(void);
char *output_string(const unsigned int);

struct _conf
{
    int precision;
    unsigned int engineering:1;
    unsigned int picky_variables:1;
    unsigned int use_radians:1;
    unsigned int output_format:4;
    unsigned int print_prefixes:1;
    unsigned int rounding_indication:4;
    unsigned int remember_errors:1;
    unsigned char thou_delimiter;
    unsigned char dec_delimiter;
    unsigned int precision_guard:1;
    unsigned int history_limit:1;
    unsigned long history_limit_len;
    unsigned int print_equal:1;
    unsigned int print_ints:1;
    unsigned int simple_calc:1;
    unsigned int verbose:1;
    unsigned int print_commas:1;
    unsigned int live_precision:1;
    unsigned int c_style_mod:1;
};

/* configuration */
extern struct _conf conf;

/* results */
extern Number last_answer;
extern char *pretty_answer;

/* communication with parser */
extern char compute;
extern unsigned int sig_figs;

/* communication with the frontend */
extern char standard_output;
extern char not_all_displayed;

/* random state */
extern gmp_randstate_t randstate;

#define DECIMAL_FORMAT 0
#define OCTAL_FORMAT 1
#define HEXADECIMAL_FORMAT 2
#define BINARY_FORMAT 3

#define NO_ROUNDING_INDICATION 0
#define SIMPLE_ROUNDING_INDICATION 1
#define SIG_FIG_ROUNDING_INDICATION 2

#endif