1 // SPDX-License-Identifier: BSD-2-Clause 2 /* 3 * Copyright (c) 2018, Linaro Limited 4 */ 5 #include <ctype.h> 6 7 int isalpha(int c) 8 { 9 if (c >= 'A' && c <= 'Z') 10 return 1; 11 if (c >= 'a' && c <= 'z') 12 return 1; 13 return 0; 14 } 15