Add -RIG_EINVAL when set_level > 1.0

rigs/dummy/dummy.c

@@ -1006,6 +1006,7 @@ static int dummy_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
 
     if (RIG_LEVEL_IS_FLOAT(level))
     {
+        if (val.f > 1.0) RETURNFUNC(-RIG_EINVAL);
         sprintf(lstr, "%f", val.f);
     }
     else

rigs/icom/icom.c

@@ -2419,6 +2419,7 @@ int icom_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
      */
     if (RIG_LEVEL_IS_FLOAT(level))
     {
+        if (val.f > 1.0) RETURNFUNC(-RIG_EINVAL);
         icom_val = val.f * 255;
     }
     else

rigs/kenwood/kenwood.c

@@ -2385,6 +2385,7 @@ int kenwood_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
 
     if (RIG_LEVEL_IS_FLOAT(level))
     {
+        if (val.f > 1.0) RETURNFUNC(-RIG_EINVAL);
         kenwood_val = val.f * 255;
     }
     else