--- a/test/lib.c	Tue Jul 11 01:35:27 2006 +0000
+++ b/test/lib.c	Wed Aug 02 04:13:15 2006 +0000
@@ -18,3 +18,45 @@
 	fprintf( f, "\n");
     }
 }
+
+void fwrite_diff( FILE *f,  char *a, int a_length, char *b, int b_length )
+{
+    int i;
+    fprintf( f, "Expected %d bytes:\n", a_length );
+    fwrite_dump( f, a, a_length );
+    fprintf( f, "but was %d bytes =>\n", b_length );
+    fwrite_dump( f, b, b_length );
+}
+
+void fwrite_diff32( FILE *f, char *a, int a_length, char *b, int b_length )
+{
+    int i,j, k;
+    int length = a_length > b_length ? a_length : b_length;
+    fprintf( f, "Expected %d bytes, was %d bytes =>\n", a_length, b_length );
+    
+    for( i=0; i<length; i+=16 ) {
+	for( k=0; k<32 && i+k < length; k+=4 ) {
+	    if( i+k >= a_length || i+k >= b_length ||
+		*((volatile unsigned int *)(a+i+k)) != *((volatile unsigned int *)(b+i+k)) ) {
+		break;
+	    }
+	}
+	if( k != 32 && i+k != length ) {
+	    fprintf( f, "%08X: ", i );
+	    for( j=0; j<16 && i+j < a_length; j+=4 ) {
+		fprintf( f, "%08X ", *((volatile unsigned int *)(a+i+j)) );
+	    }
+	    
+	    for(; j<16; j+=4 ) {
+		fprintf( f, "         " );
+	    }
+	    
+	    fprintf( f, "| " );
+	    for( j=0; j<16 && i+j < b_length; j+=4 ) {
+		fprintf( f, "%08X ", *((volatile unsigned int *)(b+i+j)) );
+	    }
+
+	    fprintf( f, "\n");
+	}
+    }
+}