diff -Nau1r 1/avr_f64.c 2/avr_f64.c
--- 1/avr_f64.c	Sun Apr 13 17:31:56 2008
+++ 2/avr_f64.c	Wed Dec 17 09:53:38 2008
@@ -77,3 +77,3 @@
 
-#ifdef USE_AVR
+#if defined(USE_AVR) && ( defined(F_WITH_sin) || defined(F_WITH_cos) || defined(F_WITH_tan) || defined(F_WITH_exp) || defined(F_WITH_log) || defined(F_WITH_arcsin) || defined(F_WITH_arccos) || defined(F_WITH_arctan) )
 static void copy_from_flash_to_tempmem(void *address_in_flash, uint8_t nr_bytes)
@@ -86,3 +86,3 @@
 
-static void f_split64(float64_t *x, int8_t * f_sign, int16_t * f_ex, 
+static void f_split64(float64_t *x, uint8_t * f_sign, int16_t * f_ex, 
 						uint64_t *frac, uint8_t lshift)
@@ -397,3 +397,3 @@
 	uint8_t sig;
-	uint16_t aex,bex;
+	int16_t aex,bex;
 	uint64_t wa, wb;
@@ -1302,3 +1302,3 @@
 
-	int8_t f_sign;
+	uint8_t f_sign;
 	uint8_t len, posm, i;
@@ -1423,3 +1423,3 @@
 	int8_t nrd_vor=nrd+1;
-	char *r;
+	char *r=0;
 	uint8_t j, k;