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rational.c: optimize Integer#lcm

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* rational.c (f_div, f_mul, f_abs): optimize Integer#lcm
  Author: Tadashi Saito <tad.a.digger@gmail.com>

* numeric.c (rb_int_abs): rename from int_abs to be exported.

* internal.h (rb_int_div, rb_int_abs): exported.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56759 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
mrkn 2016-11-12 15:43:26 +00:00
parent edfa67c248
commit bdd18a2c31
3 changed files with 20 additions and 6 deletions
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2
internal.h
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@ -1179,6 +1179,8 @@ VALUE rb_int_equal(VALUE x, VALUE y);
VALUE rb_int_divmod(VALUE x, VALUE y);
VALUE rb_int_and(VALUE x, VALUE y);
VALUE rb_int_lshift(VALUE x, VALUE y);
VALUE rb_int_div(VALUE x, VALUE y);
VALUE rb_int_abs(VALUE num);
#if USE_FLONUM
#define RUBY_BIT_ROTL(v, n) (((v) << (n)) | ((v) >> ((sizeof(v) * 8) - n)))

8
numeric.c
View file

@ -4561,8 +4561,8 @@ fix_abs(VALUE fix)
return LONG2NUM(i);
}
static VALUE
int_abs(VALUE num)
VALUE
rb_int_abs(VALUE num)
{
if (FIXNUM_P(num)) {
return fix_abs(num);
@ -5250,8 +5250,8 @@ Init_Numeric(void)
rb_define_method(rb_cInteger, "fdiv", rb_int_fdiv, 1);
rb_define_method(rb_cInteger, "**", rb_int_pow, 1);
rb_define_method(rb_cInteger, "abs", int_abs, 0);
rb_define_method(rb_cInteger, "magnitude", int_abs, 0);
rb_define_method(rb_cInteger, "abs", rb_int_abs, 0);
rb_define_method(rb_cInteger, "magnitude", rb_int_abs, 0);
rb_define_method(rb_cInteger, "===", rb_int_equal, 1);
rb_define_method(rb_cInteger, "==", rb_int_equal, 1);

16
rational.c
View file

@ -76,6 +76,8 @@ f_div(VALUE x, VALUE y)
{
if (FIXNUM_P(y) && FIX2LONG(y) == 1)
return x;
if (FIXNUM_P(x) || RB_TYPE_P(x, T_BIGNUM))
return rb_int_div(x, y);
return rb_funcall(x, '/', 1, y);
}
@ -112,7 +114,10 @@ f_mul(VALUE x, VALUE y)
}
else if (ix == 1)
return y;
return rb_int_mul(x, y);
}
else if (RB_TYPE_P(x, T_BIGNUM))
return rb_int_mul(x, y);
return rb_funcall(x, '*', 1, y);
}
@ -124,7 +129,14 @@ f_sub(VALUE x, VALUE y)
return rb_funcall(x, '-', 1, y);
}
fun1(abs)
inline static VALUE
f_abs(VALUE x)
{
if (FIXNUM_P(x) || RB_TYPE_P(x, T_BIGNUM))
return rb_int_abs(x);
return rb_funcall(x, id_abs, 0);
}
fun1(integer_p)
fun1(negate)
@ -361,7 +373,7 @@ f_gcd(VALUE x, VALUE y)
inline static VALUE
f_lcm(VALUE x, VALUE y)
{
if (f_zero_p(x) || f_zero_p(y))
if (INT_ZERO_P(x) || INT_ZERO_P(y))
return ZERO;
return f_abs(f_mul(f_div(x, f_gcd(x, y)), y));
}