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* include/ruby/ruby.h (POSFIXABLE): use FIXNUM_MAX+1 instead of

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FIXNUM_MAX to make it possible to convert to double accurately.
  It assumes FLT_RADIX is 2.
  fix RubyForge bug #14102.
  backported from 1.9.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@17842 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2008-07-03 07:48:09 +00:00
parent 0f67efee0e
commit 356ecfc99e
3 changed files with 43 additions and 1 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
Thu Jul 3 16:46:56 2008 Tanaka Akira <akr@fsij.org>
* include/ruby/ruby.h (POSFIXABLE): use FIXNUM_MAX+1 instead of
FIXNUM_MAX to make it possible to convert to double accurately.
It assumes FLT_RADIX is 2.
fix RubyForge bug #14102.
backported from 1.9.
Thu Jul 3 16:08:36 2008 Tanaka Akira <akr@fsij.org> Thu Jul 3 16:08:36 2008 Tanaka Akira <akr@fsij.org>
* configure.in (erfc): erfc of glibc comes with Debian GNU/Linux Etch * configure.in (erfc): erfc of glibc comes with Debian GNU/Linux Etch

2
ruby.h
View file

@ -166,7 +166,7 @@ VALUE rb_ull2inum _((unsigned LONG_LONG));
#define FIX2LONG(x) RSHIFT((long)x,1) #define FIX2LONG(x) RSHIFT((long)x,1)
#define FIX2ULONG(x) (((unsigned long)(x))>>1) #define FIX2ULONG(x) (((unsigned long)(x))>>1)
#define FIXNUM_P(f) (((long)(f))&FIXNUM_FLAG) #define FIXNUM_P(f) (((long)(f))&FIXNUM_FLAG)
#define POSFIXABLE(f) ((f) <= FIXNUM_MAX) #define POSFIXABLE(f) ((f) < FIXNUM_MAX+1)
#define NEGFIXABLE(f) ((f) >= FIXNUM_MIN) #define NEGFIXABLE(f) ((f) >= FIXNUM_MIN)
#define FIXABLE(f) (POSFIXABLE(f) && NEGFIXABLE(f)) #define FIXABLE(f) (POSFIXABLE(f) && NEGFIXABLE(f))

34
test/ruby/test_float.rb
View file

@ -110,4 +110,38 @@ class TestFloat < Test::Unit::TestCase
assert_equal(-3.5, (-11.5).remainder(4)) assert_equal(-3.5, (-11.5).remainder(4))
assert_equal(-3.5, (-11.5).remainder(-4)) assert_equal(-3.5, (-11.5).remainder(-4))
end end
def test_to_i
assert_operator(4611686018427387905.0.to_i, :>, 0)
assert_operator(4611686018427387904.0.to_i, :>, 0)
assert_operator(4611686018427387903.8.to_i, :>, 0)
assert_operator(4611686018427387903.5.to_i, :>, 0)
assert_operator(4611686018427387903.2.to_i, :>, 0)
assert_operator(4611686018427387903.0.to_i, :>, 0)
assert_operator(4611686018427387902.0.to_i, :>, 0)
assert_operator(1073741825.0.to_i, :>, 0)
assert_operator(1073741824.0.to_i, :>, 0)
assert_operator(1073741823.8.to_i, :>, 0)
assert_operator(1073741823.5.to_i, :>, 0)
assert_operator(1073741823.2.to_i, :>, 0)
assert_operator(1073741823.0.to_i, :>, 0)
assert_operator(1073741822.0.to_i, :>, 0)
assert_operator((-1073741823.0).to_i, :<, 0)
assert_operator((-1073741824.0).to_i, :<, 0)
assert_operator((-1073741824.2).to_i, :<, 0)
assert_operator((-1073741824.5).to_i, :<, 0)
assert_operator((-1073741824.8).to_i, :<, 0)
assert_operator((-1073741825.0).to_i, :<, 0)
assert_operator((-1073741826.0).to_i, :<, 0)
assert_operator((-4611686018427387903.0).to_i, :<, 0)
assert_operator((-4611686018427387904.0).to_i, :<, 0)
assert_operator((-4611686018427387904.2).to_i, :<, 0)
assert_operator((-4611686018427387904.5).to_i, :<, 0)
assert_operator((-4611686018427387904.8).to_i, :<, 0)
assert_operator((-4611686018427387905.0).to_i, :<, 0)
assert_operator((-4611686018427387906.0).to_i, :<, 0)
end
end end