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added a few comments

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This commit is contained in:
Roberto Ierusalimschy
2014-05-15 17:08:32 -03:00
parent a73da6112d
commit 3e977f02ac
1 changed files with 14 additions and 1 deletions
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15
lvm.c
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@@ -1,5 +1,5 @@
/* /*
** $Id: lvm.c,v 2.209 2014/05/12 21:44:17 roberto Exp roberto $ ** $Id: lvm.c,v 2.210 2014/05/14 19:47:11 roberto Exp roberto $
** Lua virtual machine ** Lua virtual machine
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@@ -492,6 +492,9 @@ lua_Integer luaV_mod (lua_State *L, lua_Integer m, lua_Integer n) {
/* number of bits in an integer */ /* number of bits in an integer */
#define NBITS cast_int(sizeof(lua_Integer) * CHAR_BIT) #define NBITS cast_int(sizeof(lua_Integer) * CHAR_BIT)
/*
** Shift left operation. (Shift right just negates 'y'.)
*/
lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y) { lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y) {
if (y < 0) { /* shift right? */ if (y < 0) { /* shift right? */
if (y <= -NBITS) return 0; if (y <= -NBITS) return 0;
@@ -614,6 +617,14 @@ void luaV_finishOp (lua_State *L) {
/*
** {==================================================================
** Function 'luaV_execute': main interpreter loop
** ===================================================================
*/
/* /*
** some macros for common tasks in `luaV_execute' ** some macros for common tasks in `luaV_execute'
*/ */
@@ -1140,3 +1151,5 @@ void luaV_execute (lua_State *L) {
} }
} }
/* }================================================================== */