kotovalexarian-likes-github/ruby--ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2022-11-09 12:17:21 -05:00
Code Releases Activity

rational.c: optimize construction of Rational

Browse source 
* rational.c (nurat_{s_new_bang,canonicalize,f_rational,s_convert}):
  optimize construction of Rational from numbers.
  Author: Tadashi Saito <tad.a.digger@gmail.com>

* rational.c (read_{num,rat_nos}): optimize construction of Rational
  from string.
  Author: Tadashi Saito <tad.a.digger@gmail.com>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56737 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
mrkn 2016-11-12 06:07:46 +00:00
parent e5aa590637
commit 7e7778f80b
1 changed files with 24 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

40
rational.c
View file

@ -33,7 +33,7 @@
VALUE rb_cRational;
static ID id_abs, id_cmp, id_convert, id_eqeq_p, id_expt, id_fdiv,
static ID id_abs, id_cmp, id_eqeq_p, id_expt, id_fdiv,
id_idiv, id_integer_p, id_negate, id_to_f,
id_to_i, id_truncate, id_i_num, id_i_den;
@ -479,11 +479,11 @@ nurat_int_value(VALUE num)
static void
nurat_canonicalize(VALUE *num, VALUE *den)
{
if (f_negative_p(*den)) {
if (INT_NEGATIVE_P(*den)) {
*num = f_negate(*num);
*den = f_negate(*den);
}
else if (f_zero_p(*den)) {
else if (INT_ZERO_P(*den)) {
rb_raise_zerodiv();
}
}
@ -552,6 +552,7 @@ f_rational_new_no_reduce2(VALUE klass, VALUE x, VALUE y)
return nurat_s_canonicalize_internal_no_reduce(klass, x, y);
}
static VALUE nurat_s_convert(int argc, VALUE *argv, VALUE klass);
/*
* call-seq:
* Rational(x[, y]) -> numeric
@ -582,7 +583,7 @@ f_rational_new_no_reduce2(VALUE klass, VALUE x, VALUE y)
static VALUE
nurat_f_rational(int argc, VALUE *argv, VALUE klass)
{
return rb_funcallv(rb_cRational, id_convert, argc, argv);
return nurat_s_convert(argc, argv, rb_cRational);
}
/*
@ -1812,8 +1813,6 @@ rb_rational_new(VALUE x, VALUE y)
return nurat_s_canonicalize_internal(rb_cRational, x, y);
}
static VALUE nurat_s_convert(int argc, VALUE *argv, VALUE klass);
VALUE
rb_Rational(VALUE x, VALUE y)
{
@ -2263,9 +2262,19 @@ read_num(const char **s, int numsign, int strict,
return 0;
{
VALUE l = f_expt10(INT2NUM(count));
*num = f_mul(*num, l);
*num = f_add(*num, fp);
*num = f_div(*num, l);
#ifdef CANON
if (canonicalization) {
*num = rb_int_mul(*num, l);
*num = rb_int_plus(*num, fp);
*num = rb_rational_new2(*num, l);
}
else
#endif
{
*num = nurat_mul(*num, l);
*num = rb_rational_plus(*num, fp);
*num = nurat_div(*num, l);
}
}
}
@ -2277,14 +2286,14 @@ read_num(const char **s, int numsign, int strict,
if (!read_digits(s, strict, &exp, NULL))
return 0;
if (expsign == '-')
exp = f_negate(exp);
exp = rb_int_uminus(exp);
}
if (numsign == '-')
*num = f_negate(*num);
*num = nurat_negate(*num);
if (!NIL_P(exp)) {
VALUE l = f_expt10(exp);
*num = f_mul(*num, l);
*num = nurat_mul(*num, l);
}
return 1;
}
@ -2311,7 +2320,7 @@ read_rat_nos(const char **s, int sign, int strict,
if (!read_den(s, strict, &den))
return 0;
if (!(FIXNUM_P(den) && FIX2LONG(den) == 1))
*num = f_div(*num, den);
*num = nurat_div(*num, den);
}
return 1;
}
@ -2467,14 +2476,14 @@ nurat_s_convert(int argc, VALUE *argv, VALUE klass)
rb_match_busy(backref);
if (RB_TYPE_P(a1, T_FLOAT)) {
a1 = f_to_r(a1);
a1 = float_to_r(a1);
}
else if (RB_TYPE_P(a1, T_STRING)) {
a1 = string_to_r_strict(a1);
}
if (RB_TYPE_P(a2, T_FLOAT)) {
a2 = f_to_r(a2);
a2 = float_to_r(a2);
}
else if (RB_TYPE_P(a2, T_STRING)) {
a2 = string_to_r_strict(a2);
@ -2557,7 +2566,6 @@ Init_Rational(void)
id_abs = rb_intern("abs");
id_cmp = rb_intern("<=>");
id_convert = rb_intern("convert");
id_eqeq_p = rb_intern("==");
id_expt = rb_intern("**");
id_fdiv = rb_intern("fdiv");