1 /* go-eface-val-compare.c -- compare an empty interface with a value.
3 Copyright 2010 The Go Authors. All rights reserved.
4 Use of this source code is governed by a BSD-style
5 license that can be found in the LICENSE file. */
11 /* Compare an empty interface with a value. Return 0 for equal, not
12 zero for not equal (return value is like strcmp). */
15 __go_empty_interface_value_compare (
16 struct __go_empty_interface left,
17 const struct __go_type_descriptor *right_descriptor,
20 const struct __go_type_descriptor *left_descriptor;
22 left_descriptor = left.__type_descriptor;
23 if (((uintptr_t) left_descriptor & reflectFlags) != 0)
24 runtime_panicstring ("invalid interface value");
25 if (left_descriptor == NULL)
27 if (!__go_type_descriptors_equal (left_descriptor, right_descriptor))
29 if (__go_is_pointer_type (left_descriptor))
30 return left.__object == val ? 0 : 1;
31 if (!left_descriptor->__equalfn (left.__object, val,
32 left_descriptor->__size))