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authorshyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2007-08-22 01:11:29 +0000
committershyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2007-08-22 01:11:29 +0000
commitd47a4403bf19818f3bc66bd254f84fa823e88aa9 (patch)
treec729d3335767305125b6f827e0ff1b733cc312c0 /bignum.c
parentb441a68e7fad7c5f0d3556aba15deea970aed8a5 (diff)
* bignum.c (rb_big_neg): SIGNED_VALUE isn't in 1.8.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_6@13172 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'bignum.c')
-rw-r--r--bignum.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/bignum.c b/bignum.c
index 0beecd4..7fb48f5 100644
--- a/bignum.c
+++ b/bignum.c
@@ -74,6 +74,7 @@ get2comp(x)
BDIGIT *ds = BDIGITS(x);
BDIGIT_DBL num;
+ if (!i) return;
while (i--) ds[i] = ~ds[i];
i = 0; num = 1;
do {
@@ -102,7 +103,7 @@ 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;
}
@@ -1086,6 +1087,7 @@ rb_big_neg(x)
if (!RBIGNUM(x)->sign) get2comp(z);
ds = BDIGITS(z);
i = RBIGNUM(x)->len;
+ if (!i) return INT2FIX(~0);
while (i--) ds[i] = ~ds[i];
RBIGNUM(z)->sign = !RBIGNUM(z)->sign;
if (RBIGNUM(x)->sign) get2comp(z);