diff options
-rw-r--r-- | ChangeLog | 4 | ||||
-rw-r--r-- | bignum.c | 16 |
2 files changed, 19 insertions, 1 deletions
@@ -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 16:09:53 2008 Nobuyoshi Nakada <nobu@ruby-lang.org> * bignum.c (rb_big_lshift, rb_big_rshift, rb_big_aref): removed excess @@ -37,7 +37,21 @@ VALUE rb_cBignum; #define BIGLO(x) ((BDIGIT)((x) & (BIGRAD-1))) #define BDIGMAX ((BDIGIT)-1) -#define BIGZEROP(x) (RBIGNUM(x)->len == 0 || (RBIGNUM(x)->len == 1 && BDIGITS(x)[0] == 0)) +#define BIGZEROP(x) (RBIGNUM(x)->len == 0 || \ + (BDIGITS(x)[0] == 0 && \ + (RBIGNUM(x)->len == 1 || bigzero_p(x)))) + +static int bigzero_p(VALUE); +static int +bigzero_p(x) + VALUE x; +{ + long i; + for (i = 0; i < RBIGNUM(x)->len; ++i) { + if (BDIGITS(x)[i]) return 0; + } + return 1; +} static VALUE bignew_1(klass, len, sign) |