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* bignum.c (BIGZEROP): fix for longer Bignum zeros. [ruby-Bugs-17454]

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15575 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2008-02-22 10:50:21 +00:00
parent 81fc1cf201
commit bc2fb51c5e
2 changed files with 17 additions and 1 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
Fri Feb 22 19:50:19 2008 Nobuyoshi Nakada <nobu@ruby-lang.org>
* bignum.c (BIGZEROP): fix for longer Bignum zeros. [ruby-Bugs-17454]
Fri Feb 22 15:47:36 2008 Tanaka Akira <akr@fsij.org>
* encoding.c (rb_enc_mbclen): return minlen instead of 1 when

14
bignum.c
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@ -36,7 +36,19 @@ VALUE rb_cBignum;
#define BIGLO(x) ((BDIGIT)((x) & (BIGRAD-1)))
#define BDIGMAX ((BDIGIT)-1)
#define BIGZEROP(x) (RBIGNUM_LEN(x) == 0 || (RBIGNUM_LEN(x) == 1 && BDIGITS(x)[0] == 0))
#define BIGZEROP(x) (RBIGNUM_LEN(x) == 0 || \
(BDIGITS(x)[0] == 0 && \
(RBIGNUM_LEN(x) == 1 || bigzero_p(x))))
static int
bigzero_p(VALUE x)
{
long i;
for (i = 0; i < RBIGNUM_LEN(x); ++i) {
if (BDIGITS(x)[i]) return 0;
}
return 1;
}
#define RBIGNUM_SET_LEN(b,l) \
((RBASIC(b)->flags & RBIGNUM_EMBED_FLAG) ? \