/* * stdlib functions * * Author: Scott Wood <scottwood@freescale.com> * * Copyright (c) 2007 Freescale Semiconductor, Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published * by the Free Software Foundation. */ #include "stdlib.h" /* Not currently supported: leading whitespace, sign, 0x prefix, zero base */ unsigned long long int strtoull(const char *ptr, char **end, int base) { unsigned long long ret = 0; if (base > 36) goto out; while (*ptr) { int digit; if (*ptr >= '0' && *ptr <= '9' && *ptr < '0' + base) digit = *ptr - '0'; else if (*ptr >= 'A' && *ptr < 'A' + base - 10) digit = *ptr - 'A' + 10; else if (*ptr >= 'a' && *ptr < 'a' + base - 10) digit = *ptr - 'a' + 10; else break; ret *= base; ret += digit; ptr++; } out: if (end) *end = (char *)ptr; return ret; }