diff options
author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-02-22 10:50:21 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-02-22 10:50:21 +0000 |
commit | 350e8342f93e3679da790494b4d448bea8ebf819 (patch) | |
tree | c721ad95dd12759e81c2edbeabf1d0cb19da581b /bignum.c | |
parent | a9a081793cc84543742f91eda1949ffb8b4e0d41 (diff) |
* bignum.c (BIGZEROP): fix for longer Bignum zeros. [ruby-Bugs-17454]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@15575 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'bignum.c')
-rw-r--r-- | bignum.c | 16 |
1 files changed, 15 insertions, 1 deletions
@@ -37,7 +37,21 @@ VALUE rb_cBignum; #define BIGLO(x) ((BDIGIT)((x) & (BIGRAD-1))) #define BDIGMAX ((BDIGIT)-1) -#define BIGZEROP(x) (RBIGNUM(x)->len == 0 || (RBIGNUM(x)->len == 1 && BDIGITS(x)[0] == 0)) +#define BIGZEROP(x) (RBIGNUM(x)->len == 0 || \ + (BDIGITS(x)[0] == 0 && \ + (RBIGNUM(x)->len == 1 || bigzero_p(x)))) + +static int bigzero_p(VALUE); +static int +bigzero_p(x) + VALUE x; +{ + long i; + for (i = 0; i < RBIGNUM(x)->len; ++i) { + if (BDIGITS(x)[i]) return 0; + } + return 1; +} static VALUE bignew_1(klass, len, sign) |