Especially over checking argc then calling rb_scan_args just to
raise an ArgumentError.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66238 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c (read_num): return the exponent instead of the
divisor, to get rid of huge bignums.
* rational.c (parse_rat): subtract exponents instead of reduction
of powers.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65618 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* complex.c (rb_complex_pow): calculate power of a Fixnum without
allocating intermediate Complex objects, and avoid unexpected
NaNs.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65190 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c (RRATIONAL_SET_{NUM,DEN}): also defined in internal.h
since r53887.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64632 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Support `exception:` keyword argument in `Kernel#Rational()`.
If `exception:` is `false`, `Kernel#Rational()` returns `nil` if the given
value cannot be interpreted as a rational value.
The default value of `exception:` is `true`.
This is part of [Feature #12732].
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62759 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Since r37702, parsing complex and rational do not use regexp.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62687 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c (read_num): exp(0) is 1, no need to multiply.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c (read_num): fix segfault on Rational() with positive
but less than the length of fractional part exponent. should be
negated to convert to divisor which is a reciprocal.
[ruby-core:85783] [Bug #14547]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62555 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
instead of scattering #ifdef HAVE_NANF here and there define our
own nan() unless defined elsewhere.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61971 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
It seems HUGE_VAL is already used. Why not eliminate INTINITY.
NAN is also float. That of double is called nan(). This is also
fixed.
Signed-off-by: Urabe, Shyouhei <shyouhei@ruby-lang.org>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61938 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
To convert the object implicitly, it has had two parts in convert_type() which are
1. lookink up the method's id
2. calling the method
Seems that strncmp() and strcmp() in convert_type() are slightly heavy to look up
the method's id for type conversion.
This patch will add and use internal APIs (rb_convert_type_with_id, rb_check_convert_type_with_id)
to call the method without looking up the method's id when convert the object.
Array#flatten -> 19 % up
Array#+ -> 3 % up
[ruby-dev:50024] [Bug #13341] [Fix GH-1537]
### Before
Array#flatten 104.119k (± 1.1%) i/s - 525.690k in 5.049517s
Array#+ 1.993M (± 1.8%) i/s - 10.010M in 5.024258s
### After
Array#flatten 124.005k (± 1.0%) i/s - 624.240k in 5.034477s
Array#+ 2.058M (± 4.8%) i/s - 10.302M in 5.019328s
### Test Code
require 'benchmark/ips'
class Foo
def to_ary
[1,2,3]
end
end
Benchmark.ips do |x|
ary = []
100.times { |i| ary << i }
array = [ary]
x.report "Array#flatten" do |i|
i.times { array.flatten }
end
x.report "Array#+" do |i|
obj = Foo.new
i.times { array + obj }
end
end
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58978 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
rational.c (i_gcd): replace GCD algorithm from Euclidean algorithm to Stein
algorithm (https://en.wikipedia.org/wiki/Binary_GCD_algorithm).
Some Time methods will call internal quov() function and it calls
Rational#quo -> f_muldiv() -> i_gcd() in rational.c
And some Rational methods also call i_gcd().
The implementation of Euclidean algorithm spent a long time at modulo
operation (ie "x = y % x;").
The Stein algorithm will replace with shift operation which is faster
than modulo.
Time#subsec -> 36 % up
Time#to_r -> 26 % up
Rational#+ -> 14 % up
Rational#- -> 15 % up
Rational#* -> 13 % up
[ruby-core:80843] [Bug #13503] [Fix GH-1596]
### Before
Time#subsec 2.142M (± 9.8%) i/s - 10.659M in 5.022659s
Time#to_r 2.003M (± 9.1%) i/s - 9.959M in 5.012445s
Rational#+ 3.843M (± 0.9%) i/s - 19.274M in 5.016254s
Rational#- 3.820M (± 1.3%) i/s - 19.149M in 5.014137s
Rational#* 5.198M (± 1.4%) i/s - 26.016M in 5.005664s
* After
Time#subsec 2.902M (± 2.9%) i/s - 14.505M in 5.001815s
Time#to_r 2.503M (± 4.8%) i/s - 12.512M in 5.011454s
Rational#+ 4.390M (± 1.2%) i/s - 22.001M in 5.012413s
Rational#- 4.391M (± 1.2%) i/s - 22.013M in 5.014584s
Rational#* 5.872M (± 2.2%) i/s - 29.369M in 5.003666s
* Test code
require 'benchmark/ips'
Benchmark.ips do |x|
x.report "Time#subsec" do |t|
time = Time.now
t.times { time.subsec }
end
x.report "Time#to_r" do |t|
time = Time.now
t.times { time.to_r }
end
x.report "Rational#+" do |t|
rat1 = 1/2r
rat2 = 1/3r
t.times { rat1 + rat2 }
end
x.report "Rational#-" do |t|
rat1 = 1/3r
rat2 = 1/2r
t.times { rat1 - rat2 }
end
x.report "Rational#*" do |t|
rat1 = 1/3r
rat2 = 1/2r
t.times { rat1 * rat2 }
end
end
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58922 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c (float_numerator, float_denominator): fix for
canonicalization case where `Float#to_r` could return an Integer
not a Rational. although mathn.rb has been removed in the
trunk, fix for the backport purpose.
[ruby-core:80942] [Bug #13528]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58523 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c (nurat_round_n): [DOC] improves Integer#round
documentation as well as Float#round.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58235 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c: [DOC] improve docs for Rational and related methods
* improve class documentation for Rational
* fix call-seq's
* simplify examples for Rational#{floor,ceil,truncate,round}
* fix wrong examples for #floor, subtraction, and exponentiation
* improve docs for #<=>, Kernel#Rational, {String,Float}#to_r,
Integer.{gcd,lcm,gcdlcm}
* fix typos, grammar, and rdoc formatting
* other improvements
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58230 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c (read_num): `n` was used uninitialized when the
string started with a period.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57991 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c (parse_rat): allow float as a denominator as well as
a numerator. [ruby-core:79104] [Bug #13134]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57990 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c (read_num): use rb_int_parse_cstr to parse integer
parts, and make String#to_r consistent with #to_i and #to_f.
[ruby-core:80098] [Bug #13105]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57989 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* rational.c (read_rat_nos): denominator cannot be 0, raise zero
division in that case.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57985 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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