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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-06-26 06:27:29 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-06-26 06:27:29 +0000 |
commit | 86b65861cd7a7e60674478820e3ff7c15fa0e9c0 (patch) | |
tree | 34ba6c50f1538f0ddf5280aec8f1f9d7a147f131 /bignum.c | |
parent | 1457ee2ce4582456a7226fe81b817abb9548813e (diff) | |
download | ruby-86b65861cd7a7e60674478820e3ff7c15fa0e9c0.tar.gz |
* bignum.c (LSHIFTABLE): extract from LSHIFTX().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41641 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'bignum.c')
-rw-r--r-- | bignum.c | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -40,7 +40,8 @@ static VALUE big_three = Qnil; #endif #define ALIGNOF(type) ((int)offsetof(struct { char f1; type f2; }, f2)) /* (sizeof(d) * CHAR_BIT <= (n) ? 0 : (n)) is same as n but suppress a warning, C4293, by Visual Studio. */ -#define LSHIFTX(d, n) (sizeof(d) * CHAR_BIT <= (n) ? 0 : ((d) << (sizeof(d) * CHAR_BIT <= (n) ? 0 : (n)))) +#define LSHIFTABLE(d, n) ((n) < sizeof(d) * CHAR_BIT) +#define LSHIFTX(d, n) (!LSHIFTABLE(d, n) ? 0 : ((d) << (!LSHIFTABLE(d, n) ? 0 : (n)))) #define CLEAR_LOWBITS(d, numbits) ((d) & LSHIFTX(~((d)*0), (numbits))) #define FILL_LOWBITS(d, numbits) ((d) | (LSHIFTX(((d)*0+1), (numbits))-1)) #define POW2_P(x) (((x)&((x)-1))==0) |