diff options
Diffstat (limited to 'bignum.c')
-rw-r--r-- | bignum.c | 16 |
1 files changed, 15 insertions, 1 deletions
@@ -36,7 +36,21 @@ 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) |