1 // SPDX-License-Identifier: BSD-2-Clause 2 /* 3 * Copyright (c) 2018, Linaro Limited 4 */ 5 #include <ctype.h> 6 7 int __builtin_isupper(int c) 8 { 9 return (c >= 'A' && c <= 'Z'); 10 } 11