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Description: Fix sort_snans.js test on big endian
Author: Adrian Bunk <bunk@debian.org>
Bug-Debian: https://bugs.debian.org/878285

--- mozjs52-52.3.1.orig/js/src/tests/ecma_6/TypedArray/sort_snans.js
+++ mozjs52-52.3.1/js/src/tests/ecma_6/TypedArray/sort_snans.js
@@ -34,8 +34,20 @@ function testFloat32NaNRanges(start, end
 // and startHi, startLow and endHi, endLow should be 32-bit integers which,
 // when combined (Hi + Low), form Float64 NaNs.
 function testFloat64NaNRanges(startHi, startLow, endHi, endLow) {
-    let skipN = 10e6;
 
+    // Swap on big endian platforms
+    if ((new Uint32Array((new Uint8Array([1,2,3,4])).buffer))[0] === 0x01020304) {
+	let tmp = startHi;
+	startHi = startLow;
+	startLow = tmp;
+
+	tmp = endHi;
+	endHi = endLow;
+	endLow = tmp;
+    }
+
+    let skipN = 10e6;
+
     let sampleSizeHi  = Math.floor((endHi - startHi)/skipN);
     let sampleSizeLow = Math.floor((endLow - startLow)/skipN);