- small improvements in drivers

oxinst.c

@@ -11,6 +11,7 @@ is not changed, i.e. an existing errCode is not overwritten.
 */
 
 #include <string.h>
+#include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -160,13 +161,15 @@ double OxiGet(EaseBase *eab, int dig, int *pdig, double old) {
 
 void OxiSet(EaseBase *eab, char *cmd, double val, int dig) {
   char buf[64];
-  int l;
-
-  if (eab->syntax <= 0) {
-    snprintf(buf, sizeof(buf), "%s%.*f", cmd, dig, val);
-  } else {
-    snprintf(buf, sizeof(buf), "%s%f", cmd, val);
+  double f;
+  
+  if (eab->syntax > 0) {
+    f = fabs(val);
+    if (f < 1.0) f = 1.0;
+    dig = 5 - log10(f);
+    if (dig < 0) dig = 0;
   }
+  snprintf(buf, sizeof(buf), "%s%.*f", cmd, dig, val);
   EaseWrite(eab, buf);
 }