diff options
Diffstat (limited to 'arch/powerpc/boot/stdlib.c')
-rw-r--r-- | arch/powerpc/boot/stdlib.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/powerpc/boot/stdlib.c b/arch/powerpc/boot/stdlib.c new file mode 100644 index 0000000000..868b019d63 --- /dev/null +++ b/arch/powerpc/boot/stdlib.c @@ -0,0 +1,42 @@ +// 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; +} |