* numeric.c (fix_cmp): invert the result as the comarison is
inverted.
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class is unknown.
* test/-ext-/integer/test_my_integer.rb (test_my_integer_to_f): modify
a test for the above change.
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Integer#<=>.
* numeric.c (Integer#<=>, Fixnum#<=>): move <=> method from Fixnum to
Integer.
* numeric.c (int_cmp): add this method for Integer#<=>.
* test/-ext-/integer/test_my_integer.rb (test_my_integer_cmp): add a
test to examine Integer#<=> for unknown subclasses.
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treatment for subclasses which don't have definitions of to_f method.
* numeric.c (Integer#to_f, Fixnum#to_f): move to_f method from Fixnum
to Integer.
* ext/-test-/integer/my_integer.rb: define helper class for testing
to_f method for a subclass of Integer.
* ext/-test-/integer/extconf.rb: ditto.
* ext/-test-/integer/init.c: ditto.
* test/-ext-/integer/test_my_integer.rb: examine to_f method for a
subclass of Integer.
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it is unified with Integer#to_s.
* numeric.c (int_to_s): treat Bignum values directly.
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because they are unified with Integer#even? and Integer#odd?.
* numeric.c (Fixnum#zero?, Fixnum#even?, Fixnum#odd?): remove
definitions because they are unified with Numeric#zero?,
Integer#even?, and Integer#odd?.
* numeric.c (num_zero_p, int_even_p, int_odd_p): treat Fixnum and
Bignum values directly.
* test/ruby/test_integer.rb (test_odd_p_even_p): remove meaningless
test case.
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integers including Bignums.
* internal.h (rb_fix_plus): Declared to be usable from enum_inject.
* numeric.c (rb_fix_plus): Defined.
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* numeric.c (num_step_scan_args): comparison String with Numeric
should raise TypeError. it is an invalid type, but not a
mismatch the number of arguments. [ruby-core:62430] [Bug #9810]
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* numeric.c (flo_to_s, rb_fix2str): use rb_usascii_str_new instead
of rb_usascii_str_new_cstr, when the length can be calculated.
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This patch was created at ROSSConf Berlin 2015 [Bug #11555]
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* numeric.c (compare_with_zero): raise TypeError when not
comparable with 0.
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* hash.c (rb_any_hash): use same hash values with Float#hash so
that -0.0 and +0.0 will be identical.
[ruby-core:68541] [Bug #10979]
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* use rb_funcallv() for no arguments call instead of variadic
rb_funcall().
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* numeric.c (flodivmod): all results are NaN if divisor is NaN.
[fix GH-692]
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or an invalid value is returned in #coerce called by
numeric comparison operators and the exception
thrown by the caller has no information on the failure.
In the next release such exception should not be rescued or
should be the cause of the caller exception. nil is accepted
as the "no possible coercion" return value. See #7688.
* test/ruby/test_numeric.rb: Add corresponding test.
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