1*d815ab47SJerome Forissier // SPDX-License-Identifier: BSD-2-Clause 2*d815ab47SJerome Forissier /* 3*d815ab47SJerome Forissier * Copyright (c) 2018, Linaro Limited 4*d815ab47SJerome Forissier */ 5*d815ab47SJerome Forissier #include <ctype.h> 6*d815ab47SJerome Forissier 7*d815ab47SJerome Forissier int __builtin_isdigit(int c) 8*d815ab47SJerome Forissier { 9*d815ab47SJerome Forissier if (c >= '0' && c <= '9') 10*d815ab47SJerome Forissier return 1; 11*d815ab47SJerome Forissier return 0; 12*d815ab47SJerome Forissier } 13