diff options
Diffstat (limited to 'include/ruby/ruby.h')
| -rw-r--r-- | include/ruby/ruby.h | 34 |
1 files changed, 31 insertions, 3 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h index bf5804f647..5ccf246734 100644 --- a/include/ruby/ruby.h +++ b/include/ruby/ruby.h @@ -547,12 +547,38 @@ struct RStruct { RSTRUCT(st)->as.ary : \ RSTRUCT(st)->as.heap.ptr) +#define RBIGNUM_EMBED_LEN_MAX ((sizeof(VALUE)*3)/sizeof(BDIGIT)) struct RBignum { struct RBasic basic; - char sign; /* positive:1, negative:0 */ - long len; - void *digits; + union { + struct { + long len; + BDIGIT *digits; + } heap; + BDIGIT ary[RBIGNUM_EMBED_LEN_MAX]; + } as; }; +#define RBIGNUM_SIGN_BIT FL_USER1 +/* sign: positive:1, negative:0 */ +#define RBIGNUM_SIGN(b) ((RBASIC(b)->flags & RBIGNUM_SIGN_BIT) != 0) +#define RBIGNUM_SET_SIGN(b,sign) \ + ((sign) ? (RBASIC(b)->flags |= RBIGNUM_SIGN_BIT) \ + : (RBASIC(b)->flags &= ~RBIGNUM_SIGN_BIT)) +#define RBIGNUM_POSITIVE_P(b) RBIGNUM_SIGN(b) +#define RBIGNUM_NEGATIVE_P(b) (!RBIGNUM_SIGN(b)) + +#define RBIGNUM_EMBED_FLAG FL_USER2 +#define RBIGNUM_EMBED_LEN_MASK (FL_USER5|FL_USER4|FL_USER3) +#define RBIGNUM_EMBED_LEN_SHIFT (FL_USHIFT+3) +#define RBIGNUM_LEN(b) \ + ((RBASIC(b)->flags & RBIGNUM_EMBED_FLAG) ? \ + (long)((RBASIC(b)->flags >> RBIGNUM_EMBED_LEN_SHIFT) & \ + (RBIGNUM_EMBED_LEN_MASK >> RBIGNUM_EMBED_LEN_SHIFT)) : \ + RBIGNUM(b)->as.heap.len) +#define RBIGNUM_DIGITS(b) \ + ((RBASIC(b)->flags & RBIGNUM_EMBED_FLAG) ? \ + RBIGNUM(b)->as.ary : \ + RBIGNUM(b)->as.heap.digits) #define R_CAST(st) (struct st*) #define RBASIC(obj) (R_CAST(RBasic)(obj)) @@ -631,6 +657,8 @@ enum ruby_value_flags { #define FL_USER19 RUBY_FL_USER19 RUBY_FL_USER20 = (1<<(FL_USHIFT+20)), #define FL_USER20 RUBY_FL_USER20 + RUBY_FL_DUMMY = ~(VALUE)0 >> 1 /* make sizeof(enum ruby_value_flags) + equal to sizeof(VALUE). */ }; #define SPECIAL_CONST_P(x) (IMMEDIATE_P(x) || !RTEST(x)) |