fix g_calc with result-var

gaboshlib/g_calc.sh

@@ -1,5 +1,7 @@
 function g_calc {
 
+  unset g_calc_result
+
   # Use bc in backround for multiple bc's running much faster
   if [ -z "${g_bc_running}" ]
   then
@@ -49,6 +51,6 @@ function g_calc {
     return 1
   fi
 
-  # echo result
+  # store result
   g_calc_result="${g_sed_out}"
 }

gaboshlib/g_num_is_lower.sh

@@ -48,6 +48,7 @@ function g_num_is_lower {
   # Check for valid number
   g_num_valid_number "$f_num" "$f_checkhigher" || return 1
  
+  g_calc "${f_num} < ${f_checkhigher}"
   if [ ${g_calc_result} -ne 0 ]
   then
     return 0