diff --git a/library/amiga.lib_rev.h b/library/amiga.lib_rev.h
index ef035ea..cb02492 100644
--- a/library/amiga.lib_rev.h
+++ b/library/amiga.lib_rev.h
@@ -1,6 +1,6 @@
 #define VERSION		1
-#define REVISION	166
-#define DATE		"28.7.2004"
-#define VERS		"amiga.lib 1.166"
-#define VSTRING		"amiga.lib 1.166 (28.7.2004)\r\n"
-#define VERSTAG		"\0$VER: amiga.lib 1.166 (28.7.2004)"
+#define REVISION	167
+#define DATE		"29.7.2004"
+#define VERS		"amiga.lib 1.167"
+#define VSTRING		"amiga.lib 1.167 (29.7.2004)\r\n"
+#define VERSTAG		"\0$VER: amiga.lib 1.167 (29.7.2004)"
diff --git a/library/amiga.lib_rev.rev b/library/amiga.lib_rev.rev
index cdffbbc..f2c1eee 100644
--- a/library/amiga.lib_rev.rev
+++ b/library/amiga.lib_rev.rev
@@ -1 +1 @@
-166
+167
diff --git a/library/c.lib_rev.h b/library/c.lib_rev.h
index 8083102..de588b4 100644
--- a/library/c.lib_rev.h
+++ b/library/c.lib_rev.h
@@ -1,6 +1,6 @@
 #define VERSION		1
-#define REVISION	166
-#define DATE		"28.7.2004"
-#define VERS		"c.lib 1.166"
-#define VSTRING		"c.lib 1.166 (28.7.2004)\r\n"
-#define VERSTAG		"\0$VER: c.lib 1.166 (28.7.2004)"
+#define REVISION	167
+#define DATE		"29.7.2004"
+#define VERS		"c.lib 1.167"
+#define VSTRING		"c.lib 1.167 (29.7.2004)\r\n"
+#define VERSTAG		"\0$VER: c.lib 1.167 (29.7.2004)"
diff --git a/library/c.lib_rev.rev b/library/c.lib_rev.rev
index cdffbbc..f2c1eee 100644
--- a/library/c.lib_rev.rev
+++ b/library/c.lib_rev.rev
@@ -1 +1 @@
-166
+167
diff --git a/library/debug.lib_rev.h b/library/debug.lib_rev.h
index 0b2d798..fc1258b 100644
--- a/library/debug.lib_rev.h
+++ b/library/debug.lib_rev.h
@@ -1,6 +1,6 @@
 #define VERSION		1
-#define REVISION	166
-#define DATE		"28.7.2004"
-#define VERS		"debug.lib 1.166"
-#define VSTRING		"debug.lib 1.166 (28.7.2004)\r\n"
-#define VERSTAG		"\0$VER: debug.lib 1.166 (28.7.2004)"
+#define REVISION	167
+#define DATE		"29.7.2004"
+#define VERS		"debug.lib 1.167"
+#define VSTRING		"debug.lib 1.167 (29.7.2004)\r\n"
+#define VERSTAG		"\0$VER: debug.lib 1.167 (29.7.2004)"
diff --git a/library/debug.lib_rev.rev b/library/debug.lib_rev.rev
index cdffbbc..f2c1eee 100644
--- a/library/debug.lib_rev.rev
+++ b/library/debug.lib_rev.rev
@@ -1 +1 @@
-166
+167
diff --git a/library/m.lib_rev.h b/library/m.lib_rev.h
index 48f2d94..c46cf04 100644
--- a/library/m.lib_rev.h
+++ b/library/m.lib_rev.h
@@ -1,6 +1,6 @@
 #define VERSION		1
-#define REVISION	166
-#define DATE		"28.7.2004"
-#define VERS		"m.lib 1.166"
-#define VSTRING		"m.lib 1.166 (28.7.2004)\r\n"
-#define VERSTAG		"\0$VER: m.lib 1.166 (28.7.2004)"
+#define REVISION	167
+#define DATE		"29.7.2004"
+#define VERS		"m.lib 1.167"
+#define VSTRING		"m.lib 1.167 (29.7.2004)\r\n"
+#define VERSTAG		"\0$VER: m.lib 1.167 (29.7.2004)"
diff --git a/library/m.lib_rev.rev b/library/m.lib_rev.rev
index cdffbbc..f2c1eee 100644
--- a/library/m.lib_rev.rev
+++ b/library/m.lib_rev.rev
@@ -1 +1 @@
-166
+167
diff --git a/library/m881.lib_rev.h b/library/m881.lib_rev.h
index 5fd1ac7..3bf1e48 100644
--- a/library/m881.lib_rev.h
+++ b/library/m881.lib_rev.h
@@ -1,6 +1,6 @@
 #define VERSION		1
-#define REVISION	166
-#define DATE		"28.7.2004"
-#define VERS		"m881.lib 1.166"
-#define VSTRING		"m881.lib 1.166 (28.7.2004)\r\n"
-#define VERSTAG		"\0$VER: m881.lib 1.166 (28.7.2004)"
+#define REVISION	167
+#define DATE		"29.7.2004"
+#define VERS		"m881.lib 1.167"
+#define VSTRING		"m881.lib 1.167 (29.7.2004)\r\n"
+#define VERSTAG		"\0$VER: m881.lib 1.167 (29.7.2004)"
diff --git a/library/m881.lib_rev.rev b/library/m881.lib_rev.rev
index cdffbbc..f2c1eee 100644
--- a/library/m881.lib_rev.rev
+++ b/library/m881.lib_rev.rev
@@ -1 +1 @@
-166
+167
diff --git a/library/net.lib_rev.h b/library/net.lib_rev.h
index c7cf8ed..d2fd62d 100644
--- a/library/net.lib_rev.h
+++ b/library/net.lib_rev.h
@@ -1,6 +1,6 @@
 #define VERSION		1
-#define REVISION	166
-#define DATE		"28.7.2004"
-#define VERS		"net.lib 1.166"
-#define VSTRING		"net.lib 1.166 (28.7.2004)\r\n"
-#define VERSTAG		"\0$VER: net.lib 1.166 (28.7.2004)"
+#define REVISION	167
+#define DATE		"29.7.2004"
+#define VERS		"net.lib 1.167"
+#define VSTRING		"net.lib 1.167 (29.7.2004)\r\n"
+#define VERSTAG		"\0$VER: net.lib 1.167 (29.7.2004)"
diff --git a/library/net.lib_rev.rev b/library/net.lib_rev.rev
index cdffbbc..f2c1eee 100644
--- a/library/net.lib_rev.rev
+++ b/library/net.lib_rev.rev
@@ -1 +1 @@
-166
+167
diff --git a/library/releasenotes b/library/releasenotes
index 48363e5..e143818 100644
--- a/library/releasenotes
+++ b/library/releasenotes
@@ -1,3 +1,10 @@
+c.lib 1.167 (29.7.2004)
+
+- Modified __is_infinity() and __is_not_a_number() to use more portable
+  methods for accessing the low level representation of the IEEE 754
+  numbers they work on.
+
+
 c.lib 1.166 (28.7.2004)
 
 - Added h_strerror() function to libnet.a; there's a global 'h_errno'
diff --git a/library/stack.lib_rev.h b/library/stack.lib_rev.h
index 579d7a8..25133a3 100644
--- a/library/stack.lib_rev.h
+++ b/library/stack.lib_rev.h
@@ -1,6 +1,6 @@
 #define VERSION		1
-#define REVISION	166
-#define DATE		"28.7.2004"
-#define VERS		"stack.lib 1.166"
-#define VSTRING		"stack.lib 1.166 (28.7.2004)\r\n"
-#define VERSTAG		"\0$VER: stack.lib 1.166 (28.7.2004)"
+#define REVISION	167
+#define DATE		"29.7.2004"
+#define VERS		"stack.lib 1.167"
+#define VSTRING		"stack.lib 1.167 (29.7.2004)\r\n"
+#define VERSTAG		"\0$VER: stack.lib 1.167 (29.7.2004)"
diff --git a/library/stack.lib_rev.rev b/library/stack.lib_rev.rev
index cdffbbc..f2c1eee 100644
--- a/library/stack.lib_rev.rev
+++ b/library/stack.lib_rev.rev
@@ -1 +1 @@
-166
+167
diff --git a/library/stdio_isinfinity.c b/library/stdio_isinfinity.c
index 800c008..69f82c7 100644
--- a/library/stdio_isinfinity.c
+++ b/library/stdio_isinfinity.c
@@ -1,5 +1,5 @@
 /*
- * $Id: stdio_isinfinity.c,v 1.1.1.1 2004-07-26 16:31:37 obarthel Exp $
+ * $Id: stdio_isinfinity.c,v 1.2 2004-07-29 08:14:49 obarthel Exp $
  *
  * :ts=4
  *
@@ -39,11 +39,32 @@
 
 #if defined (FLOATING_POINT_SUPPORT)
 
+/****************************************************************************/
+
+union ieee_long_double
+{
+	long double		value;
+	unsigned long	raw[3];
+};
+
+union ieee_double
+{
+	double			value;
+	unsigned long	raw[2];
+};
+
+union ieee_single
+{
+	float			value;
+	unsigned long	raw[1];
+};
+
+/****************************************************************************/
+
 int
 __is_infinity(long double number)
 {
-	const unsigned long * const raw = (const unsigned long * const)&number;
-	int result = 0;
+	int result;
 
 	ENTER();
 
@@ -52,26 +73,35 @@ __is_infinity(long double number)
 	 */
 	if(sizeof(number) == 4) /* single precision */
 	{
+		union ieee_single x;
+
+		x.value = number;
+
 		/* Exponent = 255 and fraction = 0.0 */
-		if((raw[0] & 0x7FFFFFFF) == 0x7F800000)
-			result = 1;
+		result = ((x.raw[0] & 0x7FFFFFFF) == 0x7F800000);
 	}
 	else if (sizeof(number) == 8) /* double precision */
 	{
+		union ieee_double x;
+
+		x.value = number;
+
 		/* Exponent = 2047 and fraction = 0.0 */
-		if(((raw[0] & 0x7FFFFFFF) == 0x7FF00000) && (raw[1] == 0))
-		{
-			result = 1;
-		}
+		result = (((x.raw[0] & 0x7FFFFFFF) == 0x7FF00000) && (x.raw[1] == 0));
 	}
 	else if (sizeof(number) == 12) /* extended precision */
 	{
+		union ieee_long_double x;
+
+		x.value = number;
+
 		/* Exponent = 32767 and fraction = 0.0 */
-		if(((raw[0] & 0x7FFF0000) == 0x7FFF0000) &&
-		    (raw[1] & 0x7FFFFFFF) == 0 && (raw[2] == 0))
-		{
-			result = 1;
-		}
+		result = (((x.raw[0] & 0x7FFF0000) == 0x7FFF0000) && (x.raw[1] & 0x7FFFFFFF) == 0 && (x.raw[2] == 0));
+	}
+	else
+	{
+		/* Can't happen */
+		result = 0;
 	}
 
 	RETURN(result);
diff --git a/library/stdio_isnotanumber.c b/library/stdio_isnotanumber.c
index b0f3222..0773e8c 100644
--- a/library/stdio_isnotanumber.c
+++ b/library/stdio_isnotanumber.c
@@ -1,5 +1,5 @@
 /*
- * $Id: stdio_isnotanumber.c,v 1.1.1.1 2004-07-26 16:31:37 obarthel Exp $
+ * $Id: stdio_isnotanumber.c,v 1.2 2004-07-29 08:14:49 obarthel Exp $
  *
  * :ts=4
  *
@@ -39,11 +39,32 @@
 
 #if defined (FLOATING_POINT_SUPPORT)
 
+/****************************************************************************/
+
+union ieee_long_double
+{
+	long double		value;
+	unsigned long	raw[3];
+};
+
+union ieee_double
+{
+	double			value;
+	unsigned long	raw[2];
+};
+
+union ieee_single
+{
+	float			value;
+	unsigned long	raw[1];
+};
+
+/****************************************************************************/
+
 int
 __is_not_a_number(long double number)
 {
-	const unsigned long * const raw = (const unsigned long * const)&number;
-	int result = 0;
+	int result;
 
 	ENTER();
 
@@ -52,30 +73,35 @@ __is_not_a_number(long double number)
 	 */
 	if(sizeof(number) == 4) /* single precision */
 	{
+		union ieee_single x;
+
+		x.value = number;
+
 		/* Exponent = 255 and fraction != 0.0 */
-		if((raw[0] & 0x7F800000) == 0x7F800000 &&
-		   (raw[0] & 0x007FFFFF) != 0)
-		{
-			result = 1;
-		}
+		result = ((x.raw[0] & 0x7F800000) == 0x7F800000 && (x.raw[0] & 0x007FFFFF) != 0);
 	}
 	else if (sizeof(number) == 8) /* double precision */
 	{
+		union ieee_double x;
+
+		x.value = number;
+
 		/* Exponent = 2047 and fraction != 0.0 */
-		if(((raw[0] & 0x7FF00000) == 0x7FF00000) &&
-		   ((raw[0] & 0x000FFFFF) != 0 || (raw[1] != 0)))
-		{
-			result = 1;
-		}
+		result = (((x.raw[0] & 0x7FF00000) == 0x7FF00000) && ((x.raw[0] & 0x000FFFFF) != 0 || (x.raw[1] != 0)));
 	}
 	else if (sizeof(number) == 12) /* extended precision */
 	{
+		union ieee_long_double x;
+
+		x.value = number;
+
 		/* Exponent = 32767 and fraction != 0.0 */
-		if(((raw[0] & 0x7FFF0000) == 0x7FFF0000) &&
-		   ((raw[1] & 0x7FFFFFFF) != 0 || raw[2] != 0))
-		{
-			result = 1;
-		}
+		result = (((x.raw[0] & 0x7FFF0000) == 0x7FFF0000) && ((x.raw[1] & 0x7FFFFFFF) != 0 || x.raw[2] != 0));
+	}
+	else
+	{
+		/* Can't happen */
+		result = 0;
 	}
 
 	RETURN(result);
diff --git a/library/unix.lib_rev.h b/library/unix.lib_rev.h
index 934eeca..c85b6c9 100644
--- a/library/unix.lib_rev.h
+++ b/library/unix.lib_rev.h
@@ -1,6 +1,6 @@
 #define VERSION		1
-#define REVISION	166
-#define DATE		"28.7.2004"
-#define VERS		"unix.lib 1.166"
-#define VSTRING		"unix.lib 1.166 (28.7.2004)\r\n"
-#define VERSTAG		"\0$VER: unix.lib 1.166 (28.7.2004)"
+#define REVISION	167
+#define DATE		"29.7.2004"
+#define VERS		"unix.lib 1.167"
+#define VSTRING		"unix.lib 1.167 (29.7.2004)\r\n"
+#define VERSTAG		"\0$VER: unix.lib 1.167 (29.7.2004)"
diff --git a/library/unix.lib_rev.rev b/library/unix.lib_rev.rev
index cdffbbc..f2c1eee 100644
--- a/library/unix.lib_rev.rev
+++ b/library/unix.lib_rev.rev
@@ -1 +1 @@
-166
+167