X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mono%2Fmetadata%2Fsysmath.c;h=d354c4d0cced1b6a82961e0078b0f1886057b3a4;hb=284b8b6a50c80a2513eed411084eebe5b2bd5ac4;hp=51603830154c6d52dd98cb966e5c15b355a7f0e6;hpb=c04c40760d13b2b46c34ee61fe9e0de47eaf1fbd;p=mono.git

diff --git a/mono/metadata/sysmath.c b/mono/metadata/sysmath.c
index 51603830154..d354c4d0cce 100644
--- a/mono/metadata/sysmath.c
+++ b/mono/metadata/sysmath.c
@@ -1,5 +1,12 @@
-/* math.c - these are based on bob smith's csharp routines */
-
+/*
+ * sysmath.c: these are based on bob smith's csharp routines 
+ *
+ * Author:
+ *	Mono Project (http://www.mono-project.com)
+ *
+ * Copyright 2001-2003 Ximian, Inc (http://www.ximian.com)
+ * Copyright 2004-2009 Novell, Inc (http://www.novell.com)
+ */
 #define __USE_ISOC99
 #include <math.h>
 #include <mono/metadata/sysmath.h>
@@ -49,7 +56,11 @@ gdouble ves_icall_System_Math_Round (gdouble x) {
 }
 
 gdouble ves_icall_System_Math_Round2 (gdouble value, gint32 digits, gboolean away_from_zero) {
-	double p, int_part, dec_part;
+#if !defined (HAVE_ROUND) || !defined (HAVE_RINT)
+	double int_part, dec_part;
+#endif
+	double p;
+
 	MONO_ARCH_SAVE_REGS;
 	if (value == HUGE_VAL)
 		return HUGE_VAL;
@@ -58,6 +69,12 @@ gdouble ves_icall_System_Math_Round2 (gdouble value, gint32 digits, gboolean awa
 	if (digits == 0)
 		return ves_icall_System_Math_Round(value);
 	p = pow(10, digits);
+#if defined (HAVE_ROUND) && defined (HAVE_RINT)
+	if (away_from_zero)
+		return round (value * p) / p;
+	else
+		return rint (value * p) / p;
+#else
 	dec_part = modf (value, &int_part);
 	dec_part *= 1000000000000000ULL;
 	if (away_from_zero && dec_part > 0)
@@ -73,7 +90,8 @@ gdouble ves_icall_System_Math_Round2 (gdouble value, gint32 digits, gboolean awa
 	} else
 		dec_part = ves_icall_System_Math_Round (dec_part);
 	dec_part /= p;
-	return int_part + dec_part;
+	return ves_icall_System_Math_Round ((int_part + dec_part) * p) / p;
+#endif
 }
 
 gdouble