summaryrefslogtreecommitdiff
path: root/bignum.c
diff options
context:
space:
mode:
authormatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2006-09-07 16:35:59 +0000
committermatz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2006-09-07 16:35:59 +0000
commitb2b33db3552e1c99bf9842a36fa30c064fc5a5d6 (patch)
tree5b090b0d5730bd14c5b282294b0266756df17aba /bignum.c
parenta5913ab9ff98ba7ae14858a3a20cd685a5c49184 (diff)
* numeric.c (fix_plus): addition in Fixnum will never overflow
long. a patch from Ondrej Bilka <neleai at seznam.cz>. [ruby-core:08794] * numeric.c (fix_minus): ditto. * bignum.c (rb_big_pow): eagerly truncate resulting bignum. [ruby-core:08794] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@10880 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'bignum.c')
-rw-r--r--bignum.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/bignum.c b/bignum.c
index 6a7a83c..df702e2 100644
--- a/bignum.c
+++ b/bignum.c
@@ -1617,8 +1617,10 @@ rb_big_pow(x, y)
while (yy % 2 == 0) {
yy /= 2;
x = rb_big_mul(x, x);
+ if (!BDIGITS(x)[RBIGNUM(x)->len-1]) RBIGNUM(x)->len--;
}
z = rb_big_mul(z, x);
+ if (!BDIGITS(z)[RBIGNUM(z)->len-1]) RBIGNUM(z)->len--;
}
return bignorm(z);
}