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rational.c: optimize rational + rational

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* rational.c (f_addsub): optimize rational + rational.
  Author: Tadashi Saito <tad.a.digger@gmail.com>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56709 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
mrkn 2016-11-11 14:42:53 +00:00
parent 268203c5fc
commit d028d6984f
1 changed files with 12 additions and 12 deletions
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24
rational.c
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@ -691,32 +691,32 @@ f_addsub(VALUE self, VALUE anum, VALUE aden, VALUE bnum, VALUE bden, int k)
VALUE c;
if (k == '+')
c = f_add(a, b);
c = rb_int_plus(a, b);
else
c = f_sub(a, b);
b = f_idiv(aden, g);
b = rb_int_idiv(aden, g);
g = f_gcd(c, g);
num = f_idiv(c, g);
a = f_idiv(bden, g);
den = f_mul(a, b);
num = rb_int_idiv(c, g);
a = rb_int_idiv(bden, g);
den = rb_int_mul(a, b);
}
else {
VALUE g = f_gcd(aden, bden);
VALUE a = f_mul(anum, f_idiv(bden, g));
VALUE b = f_mul(bnum, f_idiv(aden, g));
VALUE a = rb_int_mul(anum, rb_int_idiv(bden, g));
VALUE b = rb_int_mul(bnum, rb_int_idiv(aden, g));
VALUE c;
if (k == '+')
c = f_add(a, b);
c = rb_int_plus(a, b);
else
c = f_sub(a, b);
b = f_idiv(aden, g);
b = rb_int_idiv(aden, g);
g = f_gcd(c, g);
num = f_idiv(c, g);
a = f_idiv(bden, g);
den = f_mul(a, b);
num = rb_int_idiv(c, g);
a = rb_int_idiv(bden, g);
den = rb_int_mul(a, b);
}
return f_rational_new_no_reduce2(CLASS_OF(self), num, den);
}