diff options
Diffstat (limited to 'plugins/MirLua/src/lua/lobject.c')
| -rw-r--r-- | plugins/MirLua/src/lua/lobject.c | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/plugins/MirLua/src/lua/lobject.c b/plugins/MirLua/src/lua/lobject.c index 6a24aff95d..6c53b981df 100644 --- a/plugins/MirLua/src/lua/lobject.c +++ b/plugins/MirLua/src/lua/lobject.c @@ -1,5 +1,5 @@ /* -** $Id: lobject.c,v 2.101 2014/12/26 14:43:45 roberto Exp $ +** $Id: lobject.c,v 2.104 2015/04/11 18:30:08 roberto Exp $ ** Some generic functions over Lua objects ** See Copyright Notice in lua.h */ @@ -10,6 +10,8 @@ #include "lprefix.h" +#include <locale.h> +#include <math.h> #include <stdarg.h> #include <stdio.h> #include <stdlib.h> @@ -39,8 +41,12 @@ LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT}; int luaO_int2fb (unsigned int x) { int e = 0; /* exponent */ if (x < 8) return x; - while (x >= 0x10) { - x = (x+1) >> 1; + while (x >= (8 << 4)) { /* coarse steps */ + x = (x + 0xf) >> 4; /* x = ceil(x / 16) */ + e += 4; + } + while (x >= (8 << 1)) { /* fine steps */ + x = (x + 1) >> 1; /* x = ceil(x / 2) */ e++; } return ((e+1) << 3) | (cast_int(x) - 8); @@ -55,8 +61,11 @@ int luaO_fb2int (int x) { } +/* +** Computes ceil(log2(x)) +*/ int luaO_ceillog2 (unsigned int x) { - static const lu_byte log_2[256] = { + static const lu_byte log_2[256] = { /* log_2[i] = ceil(log2(i - 1)) */ 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, 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, @@ -149,13 +158,13 @@ void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2, } /* could not perform raw operation; try metamethod */ lua_assert(L != NULL); /* should not fail when folding (compile time) */ - luaT_trybinTM(L, p1, p2, res, cast(TMS, op - LUA_OPADD + TM_ADD)); + luaT_trybinTM(L, p1, p2, res, cast(TMS, (op - LUA_OPADD) + TM_ADD)); } int luaO_hexavalue (int c) { if (lisdigit(c)) return c - '0'; - else return ltolower(c) - 'a' + 10; + else return (ltolower(c) - 'a') + 10; } @@ -172,9 +181,8 @@ static int isneg (const char **s) { ** Lua's implementation for 'lua_strx2number' ** =================================================================== */ -#if !defined(lua_strx2number) -#include <math.h> +#if !defined(lua_strx2number) /* maximum number of significant digits to read (to avoid overflows even with single floats) */ @@ -185,21 +193,22 @@ static int isneg (const char **s) { ** C99 specification for 'strtod' */ static lua_Number lua_strx2number (const char *s, char **endptr) { + int dot = lua_getlocaledecpoint(); lua_Number r = 0.0; /* result (accumulator) */ int sigdig = 0; /* number of significant digits */ int nosigdig = 0; /* number of non-significant digits */ int e = 0; /* exponent correction */ int neg; /* 1 if number is negative */ - int dot = 0; /* true after seen a dot */ + int hasdot = 0; /* true after seen a dot */ *endptr = cast(char *, s); /* nothing is valid yet */ while (lisspace(cast_uchar(*s))) s++; /* skip initial spaces */ neg = isneg(&s); /* check signal */ if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X'))) /* check '0x' */ return 0.0; /* invalid format (no '0x') */ for (s += 2; ; s++) { /* skip '0x' and read numeral */ - if (*s == '.') { - if (dot) break; /* second dot? stop loop */ - else dot = 1; + if (*s == dot) { + if (hasdot) break; /* second dot? stop loop */ + else hasdot = 1; } else if (lisxdigit(cast_uchar(*s))) { if (sigdig == 0 && *s == '0') /* non-significant digit (zero)? */ @@ -207,7 +216,7 @@ static lua_Number lua_strx2number (const char *s, char **endptr) { else if (++sigdig <= MAXSIGDIG) /* can read it without overflow? */ r = (r * cast_num(16.0)) + luaO_hexavalue(*s); else e++; /* too many digits; ignore, but still count for exponent */ - if (dot) e--; /* decimal digit? correct exponent */ + if (hasdot) e--; /* decimal digit? correct exponent */ } else break; /* neither a dot nor a digit */ } @@ -244,7 +253,7 @@ static const char *l_str2d (const char *s, lua_Number *result) { *result = lua_strx2number(s, &endptr); else *result = lua_str2number(s, &endptr); - if (endptr == s) return 0; /* nothing recognized */ + if (endptr == s) return NULL; /* nothing recognized */ while (lisspace(cast_uchar(*endptr))) endptr++; return (*endptr == '\0' ? endptr : NULL); /* OK if no trailing characters */ } @@ -290,7 +299,7 @@ size_t luaO_str2num (const char *s, TValue *o) { } else return 0; /* conversion failed */ - return (e - s + 1); /* success; return string size */ + return (e - s) + 1; /* success; return string size */ } @@ -329,7 +338,7 @@ void luaO_tostring (lua_State *L, StkId obj) { len = lua_number2str(buff, fltvalue(obj)); #if !defined(LUA_COMPAT_FLOATSTRING) if (buff[strspn(buff, "-0123456789")] == '\0') { /* looks like an int? */ - buff[len++] = '.'; + buff[len++] = lua_getlocaledecpoint(); buff[len++] = '0'; /* adds '.0' to result */ } #endif |