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author | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2014-05-26 14:10:22 -0300 |
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committer | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2014-05-26 14:10:22 -0300 |
commit | c98f195eb930422be2829f78696fb4bf79b93677 (patch) | |
tree | 119b0eca4b1b1435f6a73cecb50e368455081c14 /ltable.c | |
parent | 4d696c45b9710e4b3d2eb65a0ebef79766937a4a (diff) | |
download | lua-c98f195eb930422be2829f78696fb4bf79b93677.tar.gz lua-c98f195eb930422be2829f78696fb4bf79b93677.tar.bz2 lua-c98f195eb930422be2829f78696fb4bf79b93677.zip |
function 'luaV_numtointeger' changed to a global macro
'lua_numtointeger' (tricky, small, and useful in several places)
Diffstat (limited to 'ltable.c')
-rw-r--r-- | ltable.c | 21 |
1 files changed, 13 insertions, 8 deletions
@@ -1,5 +1,5 @@ | |||
1 | /* | 1 | /* |
2 | ** $Id: ltable.c,v 2.87 2014/04/15 14:28:20 roberto Exp roberto $ | 2 | ** $Id: ltable.c,v 2.88 2014/04/15 16:32:49 roberto Exp roberto $ |
3 | ** Lua tables (hash) | 3 | ** Lua tables (hash) |
4 | ** See Copyright Notice in lua.h | 4 | ** See Copyright Notice in lua.h |
5 | */ | 5 | */ |
@@ -67,12 +67,6 @@ | |||
67 | #define hashpointer(t,p) hashmod(t, IntPoint(p)) | 67 | #define hashpointer(t,p) hashmod(t, IntPoint(p)) |
68 | 68 | ||
69 | 69 | ||
70 | /* checks whether a float has a value representable as a lua_Integer | ||
71 | (and does the conversion if so) */ | ||
72 | #define numisinteger(x,i) \ | ||
73 | (((x) == l_floor(x)) && luaV_numtointeger(x, i)) | ||
74 | |||
75 | |||
76 | #define dummynode (&dummynode_) | 70 | #define dummynode (&dummynode_) |
77 | 71 | ||
78 | #define isdummy(n) ((n) == dummynode) | 72 | #define isdummy(n) ((n) == dummynode) |
@@ -84,6 +78,17 @@ static const Node dummynode_ = { | |||
84 | 78 | ||
85 | 79 | ||
86 | /* | 80 | /* |
81 | ** Checks whether a float has a value representable as a lua_Integer | ||
82 | ** (and does the conversion if so) | ||
83 | */ | ||
84 | static int numisinteger (lua_Number x, lua_Integer *p) { | ||
85 | if ((x) == l_floor(x)) /* integral value? */ | ||
86 | return lua_numtointeger(x, p); /* try as an integer */ | ||
87 | else return 0; | ||
88 | } | ||
89 | |||
90 | |||
91 | /* | ||
87 | ** hash for floating-point numbers | 92 | ** hash for floating-point numbers |
88 | */ | 93 | */ |
89 | static Node *hashfloat (const Table *t, lua_Number n) { | 94 | static Node *hashfloat (const Table *t, lua_Number n) { |
@@ -424,7 +429,7 @@ TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) { | |||
424 | if (luai_numisnan(n)) | 429 | if (luai_numisnan(n)) |
425 | luaG_runerror(L, "table index is NaN"); | 430 | luaG_runerror(L, "table index is NaN"); |
426 | if (numisinteger(n, &k)) { /* index is int? */ | 431 | if (numisinteger(n, &k)) { /* index is int? */ |
427 | setivalue(&aux, k); | 432 | setivalue(&aux, k); |
428 | key = &aux; /* insert it as an integer */ | 433 | key = &aux; /* insert it as an integer */ |
429 | } | 434 | } |
430 | } | 435 | } |