[script] Use floor when implementing Int

Previously the Math.Int function converted to int and back to double.
The floor function works larger than those represented by integers and it
correctly handles NaN and Inf.

diff --git a/src/plugins/splash/script/script-lib-math.c b/src/plugins/splash/script/script-lib-math.c
index e0782438407f0bd9dc5782943fec64a9a3c4916d..383fe46f6606c0b65cc108282e5eded02def9868 100644 (file)
--- a/src/plugins/splash/script/script-lib-math.c
+++ b/src/plugins/splash/script/script-lib-math.c
@@ -61,11 +61,6 @@ static script_return_t script_lib_math_random (script_state_t *state,
   return script_return_obj (script_obj_new_number (reply_double));
 }
 
-static double double_to_int (double value)
-{
-  return (double) (int) value;
-}
-
 script_lib_math_data_t *script_lib_math_setup (script_state_t *state)
 {
   script_lib_math_data_t *data = malloc (sizeof (script_lib_math_data_t));
@@ -105,7 +100,7 @@ script_lib_math_data_t *script_lib_math_setup (script_state_t *state)
   script_add_native_function (math_hash,
                               "Int",
                               script_lib_math_double_from_double_function,
-                              double_to_int,
+                              floor,
                               "value",
                               NULL);
   script_add_native_function (math_hash,