C:\JS_KRESREAL\HBP_konverzia\lua\lobject.c		C:\JS_LUA\lua-5.2.0\src\lobject.c
	/*		/*
	** $Id: lobject.c,v 2.55 2011/11/30 19:30:16 roberto Exp $		** $Id: lobject.c,v 2.55 2011/11/30 19:30:16 roberto Exp $
	** Some generic functions over Lua objects		** Some generic functions over Lua objects
	** See Copyright Notice in lua.h		** See Copyright Notice in lua.h
	*/		*/
	#include <stdarg.h>		#include <stdarg.h>
	#include <stdio.h>		#include <stdio.h>
	#include <stdlib.h>		#include <stdlib.h>
	#include <string.h>		#include <string.h>
	#define lobject_c		#define lobject_c
	#define LUA_CORE		#define LUA_CORE
	#include "lua.h"		#include "lua.h"
	#include "lctype.h"		#include "lctype.h"
	#include "ldebug.h"		#include "ldebug.h"
	#include "ldo.h"		#include "ldo.h"
	#include "lmem.h"		#include "lmem.h"
	#include "lobject.h"		#include "lobject.h"
	#include "lstate.h"		#include "lstate.h"
	#include "lstring.h"		#include "lstring.h"
	#include "lvm.h"		#include "lvm.h"
	#ifdef GCW_BIT
	#include "lubit.h"
	#endif
	LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT};		LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT};
	/*		/*
	** converts an integer to a "floating point byte", represented as		** converts an integer to a "floating point byte", represented as
	** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if		** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if
	** eeeee != 0 and (xxx) otherwise.		** eeeee != 0 and (xxx) otherwise.
	*/		*/
	int luaO_int2fb (unsigned int x) {		int luaO_int2fb (unsigned int x) {
	int e = 0;  /* exponent */		int e = 0;  /* exponent */
	if (x < 8) return x;		if (x < 8) return x;
	while (x >= 0x10) {		while (x >= 0x10) {
	x = (x+1) >> 1;		x = (x+1) >> 1;
	e++;		e++;
	}		}
	return ((e+1) << 3) | (cast_int(x) - 8);		return ((e+1) << 3) | (cast_int(x) - 8);
	}		}
	/* converts back */		/* converts back */
	int luaO_fb2int (int x) {		int luaO_fb2int (int x) {
	int e = (x >> 3) & 0x1f;		int e = (x >> 3) & 0x1f;
	if (e == 0) return x;		if (e == 0) return x;
	else return ((x & 7) + 8) << (e - 1);		else return ((x & 7) + 8) << (e - 1);
	}		}
	int luaO_ceillog2 (unsigned int x) {		int luaO_ceillog2 (unsigned int x) {
	static const lu_byte log_2[256] = {		static const lu_byte log_2[256] = {
	0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,		0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
	6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,		6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,		7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
	7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,		7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
	8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
	8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
	8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
	8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8		8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
	};		};
	int l = 0;		int l = 0;
	x--;		x--;
	while (x >= 256) { l += 8; x >>= 8; }		while (x >= 256) { l += 8; x >>= 8; }
	return l + log_2[x];		return l + log_2[x];
	}		}
	lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2) {		lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2) {
	switch (op) {		switch (op) {
	case LUA_OPADD: return luai_numadd(NULL, v1, v2);		case LUA_OPADD: return luai_numadd(NULL, v1, v2);
	case LUA_OPSUB: return luai_numsub(NULL, v1, v2);		case LUA_OPSUB: return luai_numsub(NULL, v1, v2);
	case LUA_OPMUL: return luai_nummul(NULL, v1, v2);		case LUA_OPMUL: return luai_nummul(NULL, v1, v2);
	case LUA_OPDIV: return luai_numdiv(NULL, v1, v2);		case LUA_OPDIV: return luai_numdiv(NULL, v1, v2);
	case LUA_OPMOD: return luai_nummod(NULL, v1, v2);		case LUA_OPMOD: return luai_nummod(NULL, v1, v2);
	case LUA_OPPOW: return luai_numpow(NULL, v1, v2);		case LUA_OPPOW: return luai_numpow(NULL, v1, v2);
	#ifdef GCW_BIT
	case LUA_OPBAND: return bit_and(NULL,v1,v2);
	case LUA_OPBOR:  return bit_or(NULL,v1,v2);
	case LUA_OPBXOR: return bit_xor(NULL,v1,v2);
	case LUA_OPBLSH: return bit_lshift(NULL,v1,v2);
	case LUA_OPBRSH: return bit_rshift(NULL,v1,v2);
	case LUA_OPLAND: return log_and(NULL,v1,v2);
	case LUA_OPLOR:  return log_or(NULL,v1,v2);
	case LUA_OPLNOT: return log_not(NULL,v1);
	case LUA_OPBNOT: return bit_not(NULL,v1);
	#endif
	case LUA_OPUNM: return luai_numunm(NULL, v1);		case LUA_OPUNM: return luai_numunm(NULL, v1);
	default: lua_assert(0); return 0;		default: lua_assert(0); return 0;
	}		}
	}		}
	int luaO_hexavalue (int c) {		int luaO_hexavalue (int c) {
	if (lisdigit(c)) return c - '0';		if (lisdigit(c)) return c - '0';
	else return ltolower(c) - 'a' + 10;		else return ltolower(c) - 'a' + 10;
	}		}
	#if !defined(lua_strx2number)		#if !defined(lua_strx2number)
	#include <math.h>		#include <math.h>
	static int isneg (const char **s) {		static int isneg (const char **s) {
	if (**s == '-') { (*s)++; return 1; }		if (**s == '-') { (*s)++; return 1; }
	else if (**s == '+') (*s)++;		else if (**s == '+') (*s)++;
	return 0;		return 0;
	}		}
	static lua_Number readhexa (const char **s, lua_Number r, int *count) {		static lua_Number readhexa (const char **s, lua_Number r, int *count) {
	for (; lisxdigit(cast_uchar(**s)); (*s)++) {  /* read integer part */		for (; lisxdigit(cast_uchar(**s)); (*s)++) {  /* read integer part */
	r = (r * 16.0) + cast_num(luaO_hexavalue(cast_uchar(**s)));		r = (r * 16.0) + cast_num(luaO_hexavalue(cast_uchar(**s)));
	(*count)++;		(*count)++;
	}		}
	return r;		return r;
	}		}
	/*		/*
	** convert an hexadecimal numeric string to a number, following		** convert an hexadecimal numeric string to a number, following
	** C99 specification for 'strtod'		** C99 specification for 'strtod'
	*/		*/
	static lua_Number lua_strx2number (const char *s, char **endptr) {		static lua_Number lua_strx2number (const char *s, char **endptr) {
	lua_Number r = 0.0;		lua_Number r = 0.0;
	int e = 0, i = 0;		int e = 0, i = 0;
	int neg = 0;  /* 1 if number is negative */		int neg = 0;  /* 1 if number is negative */
	*endptr = cast(char *, s);  /* nothing is valid yet */		*endptr = cast(char *, s);  /* nothing is valid yet */
	while (lisspace(cast_uchar(*s))) s++;  /* skip initial spaces */		while (lisspace(cast_uchar(*s))) s++;  /* skip initial spaces */
	neg = isneg(&s);  /* check signal */		neg = isneg(&s);  /* check signal */
	if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X')))  /* check '0x' */		if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X')))  /* check '0x' */
	return 0.0;  /* invalid format (no '0x') */		return 0.0;  /* invalid format (no '0x') */
	s += 2;  /* skip '0x' */		s += 2;  /* skip '0x' */
	r = readhexa(&s, r, &i);  /* read integer part */		r = readhexa(&s, r, &i);  /* read integer part */
	if (*s == '.') {		if (*s == '.') {
	s++;  /* skip dot */		s++;  /* skip dot */
	r = readhexa(&s, r, &e);  /* read fractional part */		r = readhexa(&s, r, &e);  /* read fractional part */
	}		}
	if (i == 0 && e == 0)		if (i == 0 && e == 0)
	return 0.0;  /* invalid format (no digit) */		return 0.0;  /* invalid format (no digit) */
	e *= -4;  /* each fractional digit divides value by 2^-4 */		e *= -4;  /* each fractional digit divides value by 2^-4 */
	*endptr = cast(char *, s);  /* valid up to here */		*endptr = cast(char *, s);  /* valid up to here */
	if (*s == 'p' || *s == 'P') {  /* exponent part? */		if (*s == 'p' || *s == 'P') {  /* exponent part? */
	int exp1 = 0;		int exp1 = 0;
	int neg1;		int neg1;
	s++;  /* skip 'p' */		s++;  /* skip 'p' */
	neg1 = isneg(&s);  /* signal */		neg1 = isneg(&s);  /* signal */
	if (!lisdigit(cast_uchar(*s)))		if (!lisdigit(cast_uchar(*s)))
	goto ret;  /* must have at least one digit */		goto ret;  /* must have at least one digit */
	while (lisdigit(cast_uchar(*s)))  /* read exponent */		while (lisdigit(cast_uchar(*s)))  /* read exponent */
	exp1 = exp1 * 10 + *(s++) - '0';		exp1 = exp1 * 10 + *(s++) - '0';
	if (neg1) exp1 = -exp1;		if (neg1) exp1 = -exp1;
	e += exp1;		e += exp1;
	}		}
	*endptr = cast(char *, s);  /* valid up to here */		*endptr = cast(char *, s);  /* valid up to here */
	ret:		ret:
	if (neg) r = -r;		if (neg) r = -r;
	return ldexp(r, e);		return ldexp(r, e);
	}		}
	#endif		#endif
	int luaO_str2d (const char *s, size_t len, lua_Number *result) {		int luaO_str2d (const char *s, size_t len, lua_Number *result) {
	char *endptr;		char *endptr;
	if (strpbrk(s, "nN"))  /* reject 'inf' and 'nan' */		if (strpbrk(s, "nN"))  /* reject 'inf' and 'nan' */
	return 0;		return 0;
	else if (strpbrk(s, "xX"))  /* hexa? */		else if (strpbrk(s, "xX"))  /* hexa? */
	*result = lua_strx2number(s, &endptr);		*result = lua_strx2number(s, &endptr);
	else		else
	*result = lua_str2number(s, &endptr);		*result = lua_str2number(s, &endptr);
	if (endptr == s) return 0;  /* nothing recognized */		if (endptr == s) return 0;  /* nothing recognized */
	while (lisspace(cast_uchar(*endptr))) endptr++;		while (lisspace(cast_uchar(*endptr))) endptr++;
	return (endptr == s + len);  /* OK if no trailing characters */		return (endptr == s + len);  /* OK if no trailing characters */
	}		}
	static void pushstr (lua_State *L, const char *str, size_t l) {		static void pushstr (lua_State *L, const char *str, size_t l) {
	setsvalue2s(L, L->top, luaS_newlstr(L, str, l));		setsvalue2s(L, L->top, luaS_newlstr(L, str, l));
	incr_top(L);		incr_top(L);
	}		}
	/* this function handles only `%d', `%c', %f, %p, and `%s' formats */		/* this function handles only `%d', `%c', %f, %p, and `%s' formats */
	const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {		const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
	int n = 0;		int n = 0;
	for (;;) {		for (;;) {
	const char *e = strchr(fmt, '%');		const char *e = strchr(fmt, '%');
	if (e == NULL) break;		if (e == NULL) break;
	setsvalue2s(L, L->top, luaS_newlstr(L, fmt, e-fmt));		setsvalue2s(L, L->top, luaS_newlstr(L, fmt, e-fmt));
	incr_top(L);		incr_top(L);
	switch (*(e+1)) {		switch (*(e+1)) {
	case 's': {		case 's': {
	const char *s = va_arg(argp, char *);		const char *s = va_arg(argp, char *);
	if (s == NULL) s = "(null)";		if (s == NULL) s = "(null)";
	pushstr(L, s, strlen(s));		pushstr(L, s, strlen(s));
	break;		break;
	}		}
	case 'c': {		case 'c': {
	char buff;		char buff;
	buff = cast(char, va_arg(argp, int));		buff = cast(char, va_arg(argp, int));
	pushstr(L, &buff, 1);		pushstr(L, &buff, 1);
	break;		break;
	}		}
	case 'd': {		case 'd': {
	setnvalue(L->top, cast_num(va_arg(argp, int)));		setnvalue(L->top, cast_num(va_arg(argp, int)));
	incr_top(L);		incr_top(L);
	break;		break;
	}		}
	case 'f': {		case 'f': {
	setnvalue(L->top, cast_num(va_arg(argp, l_uacNumber)));		setnvalue(L->top, cast_num(va_arg(argp, l_uacNumber)));
	incr_top(L);		incr_top(L);
	break;		break;
	}		}
	case 'p': {		case 'p': {
	char buff[4*sizeof(void *) + 8]; /* should be enough space for a `%p' */		char buff[4*sizeof(void *) + 8]; /* should be enough space for a `%p' */
	int l = sprintf(buff, "%p", va_arg(argp, void *));		int l = sprintf(buff, "%p", va_arg(argp, void *));
	pushstr(L, buff, l);		pushstr(L, buff, l);
	break;		break;
	}		}
	case '%': {		case '%': {
	pushstr(L, "%", 1);		pushstr(L, "%", 1);
	break;		break;
	}		}
	default: {		default: {
	luaG_runerror(L,		luaG_runerror(L,
	"invalid option " LUA_QL("%%%c") " to " LUA_QL("lua_pushfstring"),		"invalid option " LUA_QL("%%%c") " to " LUA_QL("lua_pushfstring"),
	*(e + 1));		*(e + 1));
	}		}
	}		}
	n += 2;		n += 2;
	fmt = e+2;		fmt = e+2;
	}		}
	pushstr(L, fmt, strlen(fmt));		pushstr(L, fmt, strlen(fmt));
	if (n > 0) luaV_concat(L, n + 1);		if (n > 0) luaV_concat(L, n + 1);
	return svalue(L->top - 1);		return svalue(L->top - 1);
	}		}
	const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {		const char *luaO_pushfstring (lua_State *L, const char *fmt, ...) {
	const char *msg;		const char *msg;
	va_list argp;		va_list argp;
	va_start(argp, fmt);		va_start(argp, fmt);
	msg = luaO_pushvfstring(L, fmt, argp);		msg = luaO_pushvfstring(L, fmt, argp);
	va_end(argp);		va_end(argp);
	return msg;		return msg;
	}		}
	/* number of chars of a literal string without the ending \0 */		/* number of chars of a literal string without the ending \0 */
	#define LL(x)   (sizeof(x)/sizeof(char) - 1)		#define LL(x)   (sizeof(x)/sizeof(char) - 1)
	#define RETS    "..."		#define RETS    "..."
	#define PRE "[string \""		#define PRE "[string \""
	#define POS "\"]"		#define POS "\"]"
	#define addstr(a,b,l)   ( memcpy(a,b,(l) * sizeof(char)), a += (l) )		#define addstr(a,b,l)   ( memcpy(a,b,(l) * sizeof(char)), a += (l) )
	void luaO_chunkid (char *out, const char *source, size_t bufflen) {		void luaO_chunkid (char *out, const char *source, size_t bufflen) {
	size_t l = strlen(source);		size_t l = strlen(source);
	if (*source == '=') {  /* 'literal' source */		if (*source == '=') {  /* 'literal' source */
	if (l <= bufflen)  /* small enough? */		if (l <= bufflen)  /* small enough? */
	memcpy(out, source + 1, l * sizeof(char));		memcpy(out, source + 1, l * sizeof(char));
	else {  /* truncate it */		else {  /* truncate it */
	addstr(out, source + 1, bufflen - 1);		addstr(out, source + 1, bufflen - 1);
	*out = '\0';		*out = '\0';
	}		}
	}		}
	else if (*source == '@') {  /* file name */		else if (*source == '@') {  /* file name */
	if (l <= bufflen)  /* small enough? */		if (l <= bufflen)  /* small enough? */
	memcpy(out, source + 1, l * sizeof(char));		memcpy(out, source + 1, l * sizeof(char));
	else {  /* add '...' before rest of name */		else {  /* add '...' before rest of name */
	addstr(out, RETS, LL(RETS));		addstr(out, RETS, LL(RETS));
	bufflen -= LL(RETS);		bufflen -= LL(RETS);
	memcpy(out, source + 1 + l - bufflen, bufflen * sizeof(char));		memcpy(out, source + 1 + l - bufflen, bufflen * sizeof(char));
	}		}
	}		}
	else {  /* string; format as [string "source"] */		else {  /* string; format as [string "source"] */
	const char *nl = strchr(source, '\n');  /* find first new line (if any) */		const char *nl = strchr(source, '\n');  /* find first new line (if any) */
	addstr(out, PRE, LL(PRE));  /* add prefix */		addstr(out, PRE, LL(PRE));  /* add prefix */
	bufflen -= LL(PRE RETS POS) + 1;  /* save space for prefix+suffix+'\0' */		bufflen -= LL(PRE RETS POS) + 1;  /* save space for prefix+suffix+'\0' */
	if (l < bufflen && nl == NULL) {  /* small one-line source? */		if (l < bufflen && nl == NULL) {  /* small one-line source? */
	addstr(out, source, l);  /* keep it */		addstr(out, source, l);  /* keep it */
	}		}
	else {		else {
	if (nl != NULL) l = nl - source;  /* stop at first newline */		if (nl != NULL) l = nl - source;  /* stop at first newline */
	if (l > bufflen) l = bufflen;		if (l > bufflen) l = bufflen;
	addstr(out, source, l);		addstr(out, source, l);
	addstr(out, RETS, LL(RETS));		addstr(out, RETS, LL(RETS));
	}		}
	memcpy(out, POS, (LL(POS) + 1) * sizeof(char));		memcpy(out, POS, (LL(POS) + 1) * sizeof(char));
	}		}
	}		}