Index: trunk/Ohana/src/libohana/test/typetest.c
===================================================================
--- trunk/Ohana/src/libohana/test/typetest.c	(revision 28241)
+++ trunk/Ohana/src/libohana/test/typetest.c	(revision 28241)
@@ -0,0 +1,73 @@
+# include "ohana.h"
+
+enum
+{
+    OHANA_LITTLE_ENDIAN = 0x03020100ul,
+    OHANA_BIG_ENDIAN    = 0x00010203ul,
+};
+
+static const union { 
+    unsigned char bytes[4]; 
+    int value; 
+} ohana_host_order = { { 0, 1, 2, 3 } };
+
+# define OHANA_HOST_ORDER (ohana_host_order.value)
+
+// we need to verify some type-related issues:
+int main (int argc, char **argv) {
+
+    int status;
+
+    status = 0;
+
+    // 1) have we defined BYTE_SWAP correctly?
+
+# ifdef BYTE_SWAP
+    if (OHANA_HOST_ORDER == OHANA_BIG_ENDIAN) {
+	fprintf (stderr, "ERROR: BYTE_SWAP is defined on a big endian machine\n");
+	fprintf (stderr, "(see libohana/include/ohana.h)\n");
+	status = 1;
+    } else {
+	fprintf (stderr, "BYTE_SWAP is small endian\n");
+    }	
+# else
+    if (OHANA_HOST_ORDER == OHANA_BIG_ENDIAN) {
+	fprintf (stderr, "NOT_BYTE_SWAP is big endian\n");
+    } else {
+	fprintf (stderr, "ERROR: BYTE_SWAP not defined on a small endian machine\n");
+	fprintf (stderr, "(see libohana/include/ohana.h)\n");
+	status = 1;
+    }	
+# endif 
+
+    // 2) have we defined NAN correctly?
+    {
+	float fvalue;
+	double dvalue;
+    
+	fvalue = NAN;
+	dvalue = NAN;
+
+	if (isfinite(fvalue)) {
+	    fprintf (stderr, "ERROR: NAN definition fails for float\n");
+	    fprintf (stderr, "fvalue: %e\n", fvalue);
+	    status = 1;
+	}
+	if (isfinite(dvalue)) {
+	    fprintf (stderr, "ERROR: NAN definition fails for double\n");
+	    fprintf (stderr, "dvalue: %e\n", dvalue);
+	    status = 1;
+	}
+
+	fprintf (stderr, "fvalue: %e (isfinite: %d)\n", fvalue, isfinite(fvalue));
+	fprintf (stderr, "dvalue: %e (isfinite: %d)\n", dvalue, isfinite(dvalue));
+
+# ifdef __STDC_VERSION__
+	fprintf (stderr, "STDC_VERSION: %ld\n", __STDC_VERSION__);
+# else
+	fprintf (stderr, "STDC_VERSION is not set\n");
+# endif
+
+    }
+    exit (status);
+}