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From 2dfde7e8586cf35318b6053410dba74fe9f06f8d Mon Sep 17 00:00:00 2001
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From: usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
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Date: Sun, 30 Apr 2017 13:27:17 +0000
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Subject: [PATCH] REVERTED: merge revision(s) 55604,55612: [Backport #13138]
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* numeric.c (flo_round): [EXPERIMENTAL] adjust the case that the
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receiver is close to the exact but unrepresentable middle value
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of two values in the given precision.
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http://d.hatena.ne.jp/hnw/20160702
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numeric.c: round as double
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* numeric.c (flo_round): compare as double, not long double with
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i387.
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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@58513 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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---
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ChangeLog | 7 -------
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test/ruby/test_float.rb | 5 -----
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2 files changed, 12 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -604,13 +604,6 @@
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to check if no library is required, instead of AC_CHECK_LIB.
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[ruby-core:79368] [Bug #13175]
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-Sun Apr 30 22:24:25 2017 Nobuyoshi Nakada <nobu@ruby-lang.org>
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-
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- * numeric.c (flo_round): [EXPERIMENTAL] adjust the case that the
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- receiver is close to the exact but unrepresentable middle value
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- of two values in the given precision.
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- http://d.hatena.ne.jp/hnw/20160702
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-
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Sun Apr 9 22:21:23 2017 NAKAMURA Usaku <usa@ruby-lang.org>
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thread.c: rb_thread_fd_close [ci skip]
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diff --git a/numeric.c b/numeric.c
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+-- a/numeric.c
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@@ -1786,7 +1786,7 @@
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flo_round(int argc, VALUE *argv, VALUE num)
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{
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VALUE nd;
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+ double number, f;
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- double number, f, x;
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int ndigits = 0;
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int binexp;
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enum {float_dig = DBL_DIG+2};
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@@ -1828,14 +1821,8 @@
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return DBL2NUM(0);
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}
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f = pow(10, ndigits);
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+ return DBL2NUM(round(number * f) / f);
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+}
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- x = round(number * f);
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- if (x > 0) {
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- if ((double)((x + 0.5) / f) <= number) x += 1;
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- }
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- else {
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- if ((double)((x - 0.5) / f) >= number) x -= 1;
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- }
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- return DBL2NUM(x / f);}
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/*
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* call-seq:
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diff --git a/test/ruby/test_float.rb b/test/ruby/test_float.rb
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--- a/test/ruby/test_float.rb
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+++ b/test/ruby/test_float.rb
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@@ -444,11 +444,6 @@
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assert_raise(TypeError) {1.0.round(nil)}
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def (prec = Object.new).to_int; 2; end
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assert_equal(1.0, 0.998.round(prec))
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-
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- assert_equal(+5.02, +5.015.round(2))
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- assert_equal(-5.02, -5.015.round(2))
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- assert_equal(+1.26, +1.255.round(2))
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- assert_equal(-1.26, -1.255.round(2))
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end
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VS = [
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