зеркало из https://github.com/github/ruby.git
rational.c: optimize Rational#**
* rational.c (nurat_expt): optimize Rational#**. Author: Tadashi Saito <tad.a.digger@gmail.com> * numeric.c (rb_float_pow): rename flo_pow() to rb_float_pow() and remove static to be exporetd. * internal.h (rb_int_pow, rb_float_pow): exported. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56725 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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@ -1171,6 +1171,8 @@ VALUE rb_fix_plus(VALUE x, VALUE y);
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VALUE rb_int_ge(VALUE x, VALUE y);
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enum ruby_num_rounding_mode rb_num_get_rounding_option(VALUE opts);
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double rb_int_fdiv_double(VALUE x, VALUE y);
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VALUE rb_int_pow(VALUE x, VALUE y);
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VALUE rb_float_pow(VALUE x, VALUE y);
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#if USE_FLONUM
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#define RUBY_BIT_ROTL(v, n) (((v) << (n)) | ((v) >> ((sizeof(v) * 8) - n)))
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@ -1291,8 +1291,8 @@ flo_divmod(VALUE x, VALUE y)
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* 2.0**3 #=> 8.0
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*/
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static VALUE
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flo_pow(VALUE x, VALUE y)
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VALUE
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rb_float_pow(VALUE x, VALUE y)
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{
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double dx, dy;
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if (RB_TYPE_P(y, T_FIXNUM)) {
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@ -3931,7 +3931,7 @@ fix_pow(VALUE x, VALUE y)
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}
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}
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static VALUE
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VALUE
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rb_int_pow(VALUE x, VALUE y)
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{
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if (FIXNUM_P(x)) {
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@ -5395,7 +5395,7 @@ Init_Numeric(void)
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rb_define_method(rb_cFloat, "%", flo_mod, 1);
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rb_define_method(rb_cFloat, "modulo", flo_mod, 1);
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rb_define_method(rb_cFloat, "divmod", flo_divmod, 1);
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rb_define_method(rb_cFloat, "**", flo_pow, 1);
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rb_define_method(rb_cFloat, "**", rb_float_pow, 1);
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rb_define_method(rb_cFloat, "==", flo_eq, 1);
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rb_define_method(rb_cFloat, "===", flo_eq, 1);
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rb_define_method(rb_cFloat, "<=>", flo_cmp, 1);
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14
rational.c
14
rational.c
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@ -966,6 +966,8 @@ f_odd_p(VALUE integer)
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return Qfalse;
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}
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static VALUE nurat_to_f(VALUE self);
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/*
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* call-seq:
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* rat ** numeric -> numeric
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@ -1022,12 +1024,12 @@ nurat_expt(VALUE self, VALUE other)
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switch (FIX2INT(f_cmp(other, ZERO))) {
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case 1:
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num = f_expt(dat->num, other);
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den = f_expt(dat->den, other);
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num = rb_int_pow(dat->num, other);
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den = rb_int_pow(dat->den, other);
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break;
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case -1:
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num = f_expt(dat->den, f_negate(other));
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den = f_expt(dat->num, f_negate(other));
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num = rb_int_pow(dat->den, rb_int_uminus(other));
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den = rb_int_pow(dat->num, rb_int_uminus(other));
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break;
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default:
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num = ONE;
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@ -1039,10 +1041,10 @@ nurat_expt(VALUE self, VALUE other)
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}
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else if (RB_TYPE_P(other, T_BIGNUM)) {
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rb_warn("in a**b, b may be too big");
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return f_expt(f_to_f(self), other);
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return rb_float_pow(nurat_to_f(self), other);
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}
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else if (RB_TYPE_P(other, T_FLOAT) || RB_TYPE_P(other, T_RATIONAL)) {
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return f_expt(f_to_f(self), other);
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return rb_float_pow(nurat_to_f(self), other);
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}
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else {
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return rb_num_coerce_bin(self, other, id_expt);
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