diff --git a/py/objint.c b/py/objint.c
index 2e8fe4f..46f9b16 100644
--- a/py/objint.c
+++ b/py/objint.c
@@ -80,7 +80,14 @@
 }
 
 #if MICROPY_PY_BUILTINS_FLOAT
-mp_fp_as_int_class_t mp_classify_fp_as_int(mp_float_t val) {
+
+typedef enum {
+    MP_FP_CLASS_FIT_SMALLINT,
+    MP_FP_CLASS_FIT_LONGINT,
+    MP_FP_CLASS_OVERFLOW
+} mp_fp_as_int_class_t;
+
+STATIC mp_fp_as_int_class_t mp_classify_fp_as_int(mp_float_t val) {
     union {
         mp_float_t f;
 #if MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_FLOAT
@@ -130,6 +137,35 @@
 }
 #undef MP_FLOAT_SIGN_SHIFT_I32
 #undef MP_FLOAT_EXP_SHIFT_I32
+
+mp_obj_t mp_obj_new_int_from_float(mp_float_t val) {
+    int cl = fpclassify(val);
+    if (cl == FP_INFINITE) {
+        nlr_raise(mp_obj_new_exception_msg(&mp_type_OverflowError, "can't convert inf to int"));
+    } else if (cl == FP_NAN) {
+        mp_raise_ValueError("can't convert NaN to int");
+    } else {
+        mp_fp_as_int_class_t icl = mp_classify_fp_as_int(val);
+        if (icl == MP_FP_CLASS_FIT_SMALLINT) {
+            return MP_OBJ_NEW_SMALL_INT((mp_int_t)val);
+        #if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_MPZ
+        } else {
+            mp_obj_int_t *o = mp_obj_int_new_mpz();
+            mpz_set_from_float(&o->mpz, val);
+            return MP_OBJ_FROM_PTR(o);
+        }
+        #else
+        #if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_LONGLONG
+        } else if (icl == MP_FP_CLASS_FIT_LONGINT) {
+            return mp_obj_new_int_from_ll((long long)val);
+        #endif
+        } else {
+            mp_raise_ValueError("float too big");
+        }
+        #endif
+    }
+}
+
 #endif
 
 #if MICROPY_LONGINT_IMPL == MICROPY_LONGINT_IMPL_LONGLONG
@@ -323,24 +359,6 @@
     return mp_const_none;
 }
 
-#if MICROPY_PY_BUILTINS_FLOAT
-mp_obj_t mp_obj_new_int_from_float(mp_float_t val) {
-    int cl = fpclassify(val);
-    if (cl == FP_INFINITE) {
-        nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_OverflowError, "can't convert inf to int"));
-    } else if (cl == FP_NAN) {
-        nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "can't convert NaN to int"));
-    } else {
-        mp_fp_as_int_class_t icl = mp_classify_fp_as_int(val);
-        if (icl == MP_FP_CLASS_FIT_SMALLINT) {
-            return MP_OBJ_NEW_SMALL_INT((mp_int_t)val);
-        } else {
-            nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "float too big"));
-        }
-    }
-}
-#endif
-
 mp_obj_t mp_obj_new_int(mp_int_t value) {
     if (MP_SMALL_INT_FITS(value)) {
         return MP_OBJ_NEW_SMALL_INT(value);