X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mono%2Fmetadata%2Fsysmath.c;h=386092de3c016611f8534021fa20adc389164671;hb=d421ee95b03dd2ffee3dcea9ef24406a5d064684;hp=45dc2ea04c4eec15ff861fa03b9e3e11777fbd62;hpb=0c56887d08d2f4a31145f116c21fb01fce246c51;p=mono.git

diff --git a/mono/metadata/sysmath.c b/mono/metadata/sysmath.c
index 45dc2ea04c4..386092de3c0 100644
--- a/mono/metadata/sysmath.c
+++ b/mono/metadata/sysmath.c
@@ -1,5 +1,6 @@
-/*
- * sysmath.c: these are based on bob smith's csharp routines 
+/**
+ * \file
+ * these are based on bob smith's csharp routines 
  *
  * Author:
  *	Mono Project (http://www.mono-project.com)
@@ -8,6 +9,7 @@
  * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
  * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
  * Copyright 2015 Xamarin, Inc (https://www.xamarin.com)
+ * Licensed under the MIT license. See LICENSE file in the project root for full license information.
  */
 
 //
@@ -264,9 +266,19 @@ ves_icall_System_Math_Pow (gdouble x, gdouble y)
 		result = PInfinity.d;
 
 #if defined (__linux__) && SIZEOF_VOID_P == 4
-	/* On Linux 32bits, Math.Pow (-1, Double.MaxValue) would return NaN instead of 1 */
-	if (isnan (result) && isminusone (x) && (y > 9007199254740991.0 || y < -9007199254740991.0))
-		result = POne.d;
+	/* On Linux 32bits, some tests erroneously return NaN */
+	if (isnan (result)) {
+		if (isminusone (x) && (y > 9007199254740991.0 || y < -9007199254740991.0)) {
+			/* Math.Pow (-1, Double.MaxValue) and Math.Pow (-1, Double.MinValue) should return 1 */
+			result = POne.d;
+		} else if (x < -9007199254740991.0 && y < -9007199254740991.0) {
+			/* Math.Pow (Double.MinValue, Double.MinValue) should return 0 */
+			result = 0.0;
+		} else if (x < -9007199254740991.0 && y > 9007199254740991.0) {
+			/* Math.Pow (Double.MinValue, Double.MaxValue) should return Double.PositiveInfinity */
+			result = PInfinity.d;
+		}
+	}
 #endif
 
 	return result == -0.0 ? 0 : result;