From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Sat, 10 Dec 2016 20:17:30 +0000 (+0000)
Subject: only use __int128 math on x86_64
X-Git-Tag: xonotic-v0.8.5~88^2~14
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=569bdf4312b50327055406243ec991c42cf06563;p=xonotic%2Fdarkplaces.git

only use __int128 math on x86_64


git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@12308 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/mathlib.c b/mathlib.c
index 663c6f43..69203a33 100644
--- a/mathlib.c
+++ b/mathlib.c
@@ -907,7 +907,7 @@ static unsigned int mul_Lecuyer[4] = { 0x12e15e35, 0xb500f16e, 0x2e714eb2, 0xb37
 
 static void mul128(const unsigned int a[], const unsigned int b[], unsigned int dest[4])
 {
-#ifdef __GNUC__
+#if defined(__GNUC__) && defined(__x86_64__)
 	unsigned __int128 ia = ((__int128)a[0] << 96) | ((__int128)a[1] << 64) | ((__int128)a[2] << 32) | (a[3]);
 	unsigned __int128 ib = ((__int128)b[0] << 96) | ((__int128)b[1] << 64) | ((__int128)b[2] << 32) | (b[3]);
 	unsigned __int128 id = ia * ib;