DrSocalkwe3n/luajit
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Canonicalize string conversion of nan, inf, -inf.

Browse Source
This commit is contained in:
Mike Pall
2010-05-20 00:40:51 +02:00
parent c7a3103f41
commit 926f688cd0
4 changed files with 42 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/lib_string.c
View File

@@ -734,9 +734,23 @@ LJLIB_CF(string_format)
addintlen(form);
sprintf(buff, form, (unsigned LUA_INTFRM_T)lj_lib_checknum(L, arg));
break;
case 'e': case 'E': case 'f': case 'g': case 'G':
sprintf(buff, form, (double)lj_lib_checknum(L, arg));
case 'e': case 'E': case 'f': case 'g': case 'G': {
TValue tv;
tv.n = lj_lib_checknum(L, arg);
if (LJ_UNLIKELY((tv.u32.hi << 1) >= 0xffe00000)) {
/* Canonicalize output of non-finite values. */
size_t len = lj_str_bufnum(buff, &tv);
if (strfrmt[-1] == 'E' || strfrmt[-1] == 'G') {
buff[len-3] = buff[len-3] - 0x20;
buff[len-2] = buff[len-2] - 0x20;
buff[len-1] = buff[len-1] - 0x20;
}
luaL_addlstring(&b, buff, len);
continue;
}
sprintf(buff, form, (double)tv.n);
break;
}
case 'q':
addquoted(L, &b, arg);
continue;