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// SPDX-License-Identifier: GPL-2.0-only
/*
* stdlib functions
*
* Author: Scott Wood <scottwood@freescale.com>
*
* Copyright (c) 2007 Freescale Semiconductor, Inc.
*/
#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;
}
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