Merge pull request #2758 from ksss/bigdecimal-4

Support BigDecimal v4

Author: ksss

Gemfile.lock

@@ -33,7 +33,7 @@ GEM
     base64 (0.3.0)
     benchmark (0.5.0)
     benchmark-ips (2.14.0)
-    bigdecimal (3.3.1)
+    bigdecimal (4.0.0)
     concurrent-ruby (1.3.6)
     connection_pool (3.0.2)
     csv (3.3.5)
@@ -58,9 +58,8 @@ GEM
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
     json (2.18.0)
-    json-schema (6.0.0)
+    json-schema (5.1.0)
       addressable (~> 2.8)
-      bigdecimal (~> 3.1)
     language_server-protocol (3.17.0.5)
     lint_roller (1.1.0)
     listen (3.9.0)

stdlib/bigdecimal-math/0/big_math.rbs

@@ -35,6 +35,46 @@ module BigMath
   #
   def self?.PI: (Numeric prec) -> BigDecimal
 
+  # Computes the arccosine of `decimal` to the specified number of digits of
+  # precision, `numeric`.
+  #
+  # If `decimal` is NaN, returns NaN.
+  #
+  #     BigMath.acos(BigDecimal('0.5'), 32).to_s
+  #     #=> "0.10471975511965977461542144610932e1"
+  #
+  def self?.acos: (BigDecimal, Numeric) -> BigDecimal
+
+  # Computes the inverse hyperbolic cosine of `decimal` to the specified number of
+  # digits of precision, `numeric`.
+  #
+  # If `decimal` is NaN, returns NaN.
+  #
+  #     BigMath.acosh(BigDecimal('2'), 32).to_s
+  #     #=> "0.1316957896924816708625046347308e1"
+  #
+  def self?.acosh: (BigDecimal, Numeric) -> BigDecimal
+
+  # Computes the arcsine of `decimal` to the specified number of digits of
+  # precision, `numeric`.
+  #
+  # If `decimal` is NaN, returns NaN.
+  #
+  #     BigMath.asin(BigDecimal('0.5'), 32).to_s
+  #     #=> "0.52359877559829887307710723054658e0"
+  #
+  def self?.asin: (BigDecimal, Numeric) -> BigDecimal
+
+  # Computes the inverse hyperbolic sine of `decimal` to the specified number of
+  # digits of precision, `numeric`.
+  #
+  # If `decimal` is NaN, returns NaN.
+  #
+  #     BigMath.asinh(BigDecimal('1'), 32).to_s
+  #     #=> "0.88137358701954302523260932497979e0"
+  #
+  def self?.asinh: (BigDecimal, Numeric) -> BigDecimal
+
   # <!--
   #   rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb
   #   - atan(decimal, numeric) -> BigDecimal
@@ -49,6 +89,32 @@ module BigMath
   #
   def self?.atan: (BigDecimal x, Numeric prec) -> BigDecimal
 
+  # Computes the arctangent of y and x to the specified number of digits of
+  # precision, `numeric`.
+  #
+  #     BigMath.atan2(BigDecimal('-1'), BigDecimal('1'), 32).to_s
+  #     #=> "-0.78539816339744830961566084581988e0"
+  #
+  def self?.atan2: (BigDecimal, BigDecimal, Numeric) -> BigDecimal
+
+  # Computes the inverse hyperbolic tangent of `decimal` to the specified number
+  # of digits of precision, `numeric`.
+  #
+  # If `decimal` is NaN, returns NaN.
+  #
+  #     BigMath.atanh(BigDecimal('0.5'), 32).to_s
+  #     #=> "0.54930614433405484569762261846126e0"
+  #
+  def self?.atanh: (BigDecimal, Numeric) -> BigDecimal
+
+  # Computes the cube root of `decimal` to the specified number of digits of
+  # precision, `numeric`.
+  #
+  #     BigMath.cbrt(BigDecimal('2'), 32).to_s
+  #     #=> "0.12599210498948731647672106072782e1"
+  #
+  def self?.cbrt: (BigDecimal, Numeric) -> BigDecimal
+
   # <!--
   #   rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb
   #   - cos(decimal, numeric) -> BigDecimal
@@ -63,10 +129,36 @@ module BigMath
   #
   def self?.cos: (BigDecimal x, Numeric prec) -> BigDecimal
 
-  # <!--
-  #   rdoc-file=ext/bigdecimal/bigdecimal.c
-  #   - BigMath.exp(decimal, numeric)    -> BigDecimal
-  # -->
+  # Computes the hyperbolic cosine of `decimal` to the specified number of digits
+  # of precision, `numeric`.
+  #
+  # If `decimal` is NaN, returns NaN.
+  #
+  #     BigMath.cosh(BigDecimal('1'), 32).to_s
+  #     #=> "0.15430806348152437784779056207571e1"
+  #
+  def self?.cosh: (BigDecimal, Numeric) -> BigDecimal
+
+  # Computes the error function of +decimal+ to the specified number of digits of
+  # precision, +numeric+.
+  #
+  # If +decimal+ is NaN, returns NaN.
+  #
+  #   BigMath.erf(BigDecimal('1'), 32).to_s
+  #   #=> "0.84270079294971486934122063508261e0"
+  #
+  def self?.erf: (BigDecimal, Numeric) -> BigDecimal
+
+  # Computes the complementary error function of +decimal+ to the specified number of digits of
+  # precision, +numeric+.
+  #
+  # If +decimal+ is NaN, returns NaN.
+  #
+  #   BigMath.erfc(BigDecimal('10'), 32).to_s
+  #   #=> "0.20884875837625447570007862949578e-44"
+  #
+  def self?.erfc: (BigDecimal, Numeric) -> BigDecimal
+
   # Computes the value of e (the base of natural logarithms) raised to the power
   # of `decimal`, to the specified number of digits of precision.
   #
@@ -76,10 +168,45 @@ module BigMath
   #
   def self?.exp: (BigDecimal, Numeric prec) -> BigDecimal
 
-  # <!--
-  #   rdoc-file=ext/bigdecimal/bigdecimal.c
-  #   - BigMath.log(decimal, numeric)    -> BigDecimal
-  # -->
+  # Decomposes +x+ into a normalized fraction and an integral power of ten.
+  #
+  #   BigMath.frexp(BigDecimal(123.456))
+  #   #=> [0.123456e0, 3]
+  #
+  def self?.frexp: (BigDecimal) -> [ BigDecimal, Integer ]
+
+  # Computes the gamma function of +decimal+ to the specified number of
+  # digits of precision, +numeric+.
+  #
+  #   BigMath.gamma(BigDecimal('0.5'), 32).to_s
+  #   #=> "0.17724538509055160272981674833411e1"
+  #
+  def self?.gamma: (BigDecimal, Numeric) -> BigDecimal
+
+  # Returns sqrt(x**2 + y**2) to the specified number of digits of precision,
+  # `numeric`.
+  #
+  #     BigMath.hypot(BigDecimal('1'), BigDecimal('2'), 32).to_s
+  #     #=> "0.22360679774997896964091736687313e1"
+  #
+  def self?.hypot: (BigDecimal, BigDecimal, Numeric) -> BigDecimal
+
+  # Inverse of +frexp+.
+  # Returns the value of fraction * 10**exponent.
+  #
+  #   BigMath.ldexp(BigDecimal("0.123456e0"), 3)
+  #   #=> 0.123456e3
+  #
+  def self?.ldexp: (BigDecimal, Integer) -> BigDecimal
+
+  # Computes the natural logarithm of the absolute value of the gamma function
+  # of +decimal+ to the specified number of digits of precision, +numeric+ and its sign.
+  #
+  #   BigMath.lgamma(BigDecimal('0.5'), 32)
+  #   #=> [0.57236494292470008707171367567653e0, 1]
+  #
+  def self?.lgamma: (BigDecimal, Numeric) -> [BigDecimal, Integer]
+
   # Computes the natural logarithm of `decimal` to the specified number of digits
   # of precision, `numeric`.
   #
@@ -91,6 +218,20 @@ module BigMath
   #
   def self?.log: (BigDecimal, Numeric prec) -> BigDecimal
 
+  # Computes the base 2 logarithm of `decimal` to the specified number of digits
+  # of precision, `numeric`.
+  #
+  # If `decimal` is zero or negative, raises Math::DomainError.
+  #
+  # If `decimal` is positive infinity, returns Infinity.
+  #
+  # If `decimal` is NaN, returns NaN.
+  #
+  #     BigMath.log2(BigDecimal('3'), 32).to_s
+  #     #=> "0.15849625007211561814537389439478e1"
+  #
+  def self?.log2: (BigDecimal, Numeric) -> BigDecimal
+
   # <!--
   #   rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb
   #   - sin(decimal, numeric) -> BigDecimal
@@ -105,6 +246,16 @@ module BigMath
   #
   def self?.sin: (BigDecimal x, Numeric prec) -> BigDecimal
 
+  # Computes the hyperbolic sine of `decimal` to the specified number of digits of
+  # precision, `numeric`.
+  #
+  # If `decimal` is NaN, returns NaN.
+  #
+  #     BigMath.sinh(BigDecimal('1'), 32).to_s
+  #     #=> "0.11752011936438014568823818505956e1"
+  #
+  def self?.sinh: (BigDecimal, Numeric) -> BigDecimal
+
   # <!--
   #   rdoc-file=ext/bigdecimal/lib/bigdecimal/math.rb
   #   - sqrt(decimal, numeric) -> BigDecimal
@@ -116,4 +267,14 @@ module BigMath
   #     #=> "0.1414213562373095048801688724e1"
   #
   def self?.sqrt: (BigDecimal x, Numeric prec) -> BigDecimal
+
+  # Computes the hyperbolic tangent of `decimal` to the specified number of digits
+  # of precision, `numeric`.
+  #
+  # If `decimal` is NaN, returns NaN.
+  #
+  #     BigMath.tanh(BigDecimal('1'), 32).to_s
+  #     #=> "0.76159415595576488811945828260479e0"
+  #
+  def self?.tanh: (BigDecimal, Numeric) -> BigDecimal
 end

stdlib/bigdecimal/0/big_decimal.rbs

@@ -609,7 +609,7 @@ class BigDecimal < Numeric
   # The quotient q is (a/b).floor, and the modulus is the amount that must be
   # added to q * b to get a.
   #
-  def divmod: (Numeric) -> [ BigDecimal, BigDecimal ]
+  def divmod: (Numeric) -> [ Integer, BigDecimal ]
 
   # <!--
   #   rdoc-file=ext/bigdecimal/bigdecimal.c
@@ -783,20 +783,6 @@ class BigDecimal < Numeric
   #
   def power: (Numeric n, int prec) -> BigDecimal
 
-  # <!--
-  #   rdoc-file=ext/bigdecimal/bigdecimal.c
-  #   - precs -> array
-  # -->
-  # Returns an Array of two Integer values that represent platform-dependent
-  # internal storage properties.
-  #
-  # This method is deprecated and will be removed in the future. Instead, use
-  # BigDecimal#n_significant_digits for obtaining the number of significant digits
-  # in scientific notation, and BigDecimal#precision for obtaining the number of
-  # digits in decimal notation.
-  #
-  def precs: () -> [ Integer, Integer ]
-
   # <!--
   #   rdoc-file=ext/bigdecimal/bigdecimal.c
   #   - quo(value)  -> bigdecimal

test/stdlib/BigDecimal_test.rb

@@ -189,7 +189,7 @@ def test_div
   end
 
   def test_divmod
-    assert_send_type  "(::Numeric) -> [ ::BigDecimal, ::BigDecimal ]",
+    assert_send_type  "(::Numeric) -> [ ::Integer, ::BigDecimal ]",
                       BigDecimal("1.23"), :divmod, 2
   end
 
@@ -318,11 +318,6 @@ def test_power
                       BigDecimal("1.23"), :**, BigDecimal("1.23")
   end
 
-  def test_precs
-    assert_send_type  "() -> [ ::Integer, ::Integer ]",
-                      BigDecimal("1.23"), :precs
-  end
-
   def test_sign
     assert_send_type  "() -> ::Integer",
                       BigDecimal("1.23"), :sign