diff options
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 /bignum.c | |
parent | fa1bfaf741b7281418026d10b98d874759a197a4 (diff) |
* 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
Diffstat (limited to 'bignum.c')
-rw-r--r-- | bignum.c | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -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); |