From 2fea7f037f2b7fc67357ea3397ba4c8bb9e9ab67 Mon Sep 17 00:00:00 2001
From: Takuya Nakaike <nakaike@jp.ibm.com>
Date: Tue, 3 Apr 2018 14:45:52 +0900
Subject: [PATCH] Inserted #if guard for s390x

---
 Sources/Socket/SocketUtils.swift | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/Sources/Socket/SocketUtils.swift b/Sources/Socket/SocketUtils.swift
index 954118a..c0f7a59 100644
--- a/Sources/Socket/SocketUtils.swift
+++ b/Sources/Socket/SocketUtils.swift
@@ -153,11 +153,13 @@ public extension fd_set {
     @inline(__always)
     private static func address(for fd: Int32) -> (Int, Int32) {
         var intOffset = Int(fd) / __fd_set_count
-		if (intOffset % 2 == 0) {
-			intOffset += 1
-		} else {
-			intOffset -= 1
-		}
+		#if arch(s390x)
+		    if (intOffset % 2 == 0) {
+			    intOffset += 1
+		    } else {
+			    intOffset -= 1
+		    }
+        #endif
         let bitOffset = Int(fd) % __fd_set_count
         let mask = Int32(bitPattern: UInt32(1 << bitOffset))
         return (intOffset, mask)