---

yaml
---
r: 323375
b: refs/heads/tensorflow-next
c: 1f7ffb1
h: refs/heads/master
i:
  323373: e64d7cc
  323371: a8eeb80
  323367: 5b804d2
  323359: dc1d878

Author: swift-ci

[refs]

@@ -1461,4 +1461,4 @@ refs/heads/master-rebranch: 86e95c23aa0d37f24ec138b7853146c1cead2e40
 refs/heads/rdar-53901732: 9bd06af3284e18a109cdbf9aa59d833b24eeca7b
 refs/heads/revert-26776-subst-always-returns-a-type: 1b8e18fdd391903a348970a4c848995d4cdd789c
 refs/heads/tensorflow-merge: 8b854f62f80d4476cb383d43c4aac2001dde3cec
-refs/heads/tensorflow-next: 96b21ef468c504d6159ca1bc76a53b8839b8b877
+refs/heads/tensorflow-next: 1f7ffb10ce8f76115894bf8fc06b68f478b07dad

branches/tensorflow-next/stdlib/public/Darwin/Foundation/Decimal.swift

@@ -150,21 +150,32 @@ public func pow(_ x: Decimal, _ y: Int) -> Decimal {
 }
 
 extension Decimal : Hashable, Comparable {
-    internal var doubleValue : Double {
+    private subscript(index: UInt32) -> UInt16 {
+        get {
+            switch index {
+            case 0: return _mantissa.0
+            case 1: return _mantissa.1
+            case 2: return _mantissa.2
+            case 3: return _mantissa.3
+            case 4: return _mantissa.4
+            case 5: return _mantissa.5
+            case 6: return _mantissa.6
+            case 7: return _mantissa.7
+            default: fatalError("Invalid index \(index) for _mantissa")
+            }
+        }
+    }
+    
+    internal var doubleValue: Double {
+        if _length == 0 {
+            return _isNegative == 1 ? Double.nan : 0
+        }
+
         var d = 0.0
-        if _length == 0 && _isNegative == 0 {
-            return Double.nan
+        for idx in (0..<min(_length, 8)).reversed() {
+            d = d * 65536 + Double(self[idx])
         }
 
-        d = d * 65536 + Double(_mantissa.7)
-        d = d * 65536 + Double(_mantissa.6)
-        d = d * 65536 + Double(_mantissa.5)
-        d = d * 65536 + Double(_mantissa.4)
-        d = d * 65536 + Double(_mantissa.3)
-        d = d * 65536 + Double(_mantissa.2)
-        d = d * 65536 + Double(_mantissa.1)
-        d = d * 65536 + Double(_mantissa.0)
-        
         if _exponent < 0 {
             for _ in _exponent..<0 {
                 d /= 10.0
@@ -212,6 +223,7 @@ extension Decimal : ExpressibleByIntegerLiteral {
 
 extension Decimal : SignedNumeric {
   public var magnitude: Decimal {
+      guard _length != 0 else { return self }
       return Decimal(
           _exponent: self._exponent, _length: self._length,
           _isNegative: 0, _isCompact: self._isCompact,

branches/tensorflow-next/test/stdlib/TestDecimal.swift

@@ -303,6 +303,7 @@ class TestDecimal : TestDecimalSuper {
         expectEqual(Decimal(68040), Decimal(386).advanced(by: Decimal(67654)))
         expectEqual(Decimal(1.234), abs(Decimal(1.234)))
         expectEqual(Decimal(1.234), abs(Decimal(-1.234)))
+        expectTrue(Decimal.nan.magnitude.isNaN)
         var a = Decimal(1234)
         var r = a
         expectEqual(.noError, NSDecimalMultiplyByPowerOf10(&r, &a, 1, .plain))