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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2007-07-15 12:07:46 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2007-07-15 12:07:46 +0000 |
commit | b47daf811ac057b919a12f71ac1847d16a6d464b (patch) | |
tree | 00fa9ae6920d135ddbc16b76ab395f83f74933d0 | |
parent | fa1bfaf741b7281418026d10b98d874759a197a4 (diff) | |
download | ruby-b47daf811ac057b919a12f71ac1847d16a6d464b.tar.gz |
* bignum.c (get2comp): do nothing for empty Bignum. [ruby-dev:31225]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@12796 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-rw-r--r-- | ChangeLog | 4 | ||||
-rw-r--r-- | bignum.c | 3 |
2 files changed, 6 insertions, 1 deletions
@@ -1,3 +1,7 @@ +Sun Jul 15 21:07:43 2007 Nobuyoshi Nakada <nobu@ruby-lang.org> + + * bignum.c (get2comp): do nothing for empty Bignum. [ruby-dev:31225] + Sun Jul 15 19:05:28 2007 Nobuyoshi Nakada <nobu@ruby-lang.org> * bignum.c (rb_cstr_to_inum): check leading non-digits. @@ -104,7 +104,7 @@ bigtrunc(x) long len = RBIGNUM(x)->len; BDIGIT *ds = BDIGITS(x); - while (len-- && !ds[len]); + while (--len && !ds[len]); RBIGNUM(x)->len = ++len; return x; } @@ -1100,6 +1100,7 @@ rb_big_neg(x) if (!RBIGNUM(x)->sign) get2comp(z); ds = BDIGITS(z); i = RBIGNUM(x)->len; + if (!i) return INT2FIX(~(SIGNED_VALUE)0); while (i--) ds[i] = ~ds[i]; RBIGNUM(z)->sign = !RBIGNUM(z)->sign; if (RBIGNUM(x)->sign) get2comp(z); |