diff options
author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2009-08-30 04:01:42 +0000 |
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committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2009-08-30 04:01:42 +0000 |
commit | dcf2aad3a588f75e21bc22c269d652e5b8255672 (patch) | |
tree | 6ddc088959c79044887d6aab02e88ed48755ac6e /time.c | |
parent | 570d8f55b225dce01008c8fa879e85ad874ce18b (diff) |
* time.c (add): shortcut implemented for fixnums.
(sub): ditto.
(mul): ditto.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24710 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'time.c')
-rw-r--r-- | time.c | 36 |
1 files changed, 27 insertions, 9 deletions
@@ -116,28 +116,46 @@ static ID id_eq, id_ne, id_quo, id_div, id_cmp, id_lshift; static VALUE add(VALUE x, VALUE y) { - switch (TYPE(x)) { - case T_BIGNUM: return rb_big_plus(x, y); - default: return rb_funcall(x, '+', 1, y); + if (FIXNUM_P(x) && FIXNUM_P(y)) { + long l = FIX2LONG(x) + FIX2LONG(y); + if (FIXABLE(l)) return LONG2FIX(l); + return LONG2NUM(l); } + if (TYPE(x) == T_BIGNUM) return rb_big_plus(x, y); + return rb_funcall(x, '+', 1, y); } static VALUE sub(VALUE x, VALUE y) { - switch (TYPE(x)) { - case T_BIGNUM: return rb_big_minus(x, y); - default: return rb_funcall(x, '-', 1, y); + if (FIXNUM_P(x) && FIXNUM_P(y)) { + long l = FIX2LONG(x) - FIX2LONG(y); + if (FIXABLE(l)) return LONG2FIX(l); + return LONG2NUM(l); } + if (TYPE(x) == T_BIGNUM) return rb_big_minus(x, y); + return rb_funcall(x, '-', 1, y); } static VALUE mul(VALUE x, VALUE y) { - switch (TYPE(x)) { - case T_BIGNUM: return rb_big_mul(x, y); - default: return rb_funcall(x, '*', 1, y); + if (FIXNUM_P(x) && FIXNUM_P(y)) { +#if HAVE_LONG_LONG && SIZEOF_LONG * 2 <= SIZEOF_LONG_LONG + LONG_LONG ll = (LONG_LONG)FIX2LONG(x) * FIX2LONG(y); + if (FIXABLE(ll)) return LONG2FIX(ll); + return LL2NUM(ll); +#else + long a, b, c; + a = FIX2LONG(x); + if (a == 0) return x; + b = FIX2LONG(y); + c = a * b; + if (c / a == b && FIXABLE(c)) return LONG2FIX(c); +#endif } + if (TYPE(x) == T_BIGNUM) return rb_big_mul(x, y); + return rb_funcall(x, '*', 1, y); } #define div(x,y) (rb_funcall((x), id_div, 1, (y))) |