Remove undocumented method #abs2

Author: ksss

core/float.rbs

@@ -324,8 +324,6 @@ class Float < Numeric
   #
   def abs: () -> Float
 
-  def abs2: () -> Float
-
   # <!-- rdoc-file=complex.c -->
   # Returns 0 if `self` is positive, Math::PI otherwise.
   #

core/integer.rbs

@@ -513,8 +513,6 @@ class Integer < Numeric
   #
   def abs: () -> Integer
 
-  def abs2: () -> Integer
-
   # <!--
   #   rdoc-file=numeric.c
   #   - allbits?(mask) -> true or false

core/numeric.rbs

@@ -244,7 +244,7 @@ class Numeric
   # -->
   # Returns the square of `self`.
   #
-  def abs2: () -> Numeric
+  def abs2: () -> self
 
   # <!-- rdoc-file=complex.c -->
   # Returns zero if `self` is positive, Math::PI otherwise.

core/rational.rbs

@@ -186,8 +186,6 @@ class Rational < Numeric
   #
   def abs: () -> Rational
 
-  def abs2: () -> Rational
-
   # <!--
   #   rdoc-file=rational.c
   #   - rat.ceil([ndigits])  ->  integer or rational

test/stdlib/Complex_test.rb

@@ -143,4 +143,9 @@ def test_real
   def test_real?
     assert_send_type '() -> false', Complex(1, 2), :real?
   end
+
+  def test_abs2
+    assert_send_type '() -> Integer', Complex(1, 2), :abs2
+    assert_send_type '() -> Float', Complex.polar(2, 2), :abs2
+  end
 end

test/stdlib/Numeric_test.rb

@@ -27,4 +27,10 @@ def test_angle
     assert_send_type '() -> Float', -1, :angle
     assert_send_type '() -> Float', Float::NAN, :angle
   end
+
+  def test_abs2
+    assert_send_type '() -> Integer', 1, :abs2
+    assert_send_type '() -> Float', 1.0, :abs2
+    assert_send_type '() -> Rational', 1r, :abs2
+  end
 end