EmbeddedPkg/Library/FdtLib/fdt_strtoul.c

   1 #/* @file
   2 #  Copyright (c) 2018, Linaro Limited. All rights reserved.
   3 #
   4 #  This program and the accompanying materials
   5 #  are licensed and made available under the terms and conditions of the BSD License
   6 #  which accompanies this distribution.  The full text of the license may be found at
   7 #  http://opensource.org/licenses/bsd-license.php
   8 #
   9 #  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 #  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 #
  12 #*/
  13
  14 #include <Base.h>
  15 #include <Library/BaseLib.h>
  16 #include <Library/DebugLib.h>
  17
  18 unsigned long strtoul(const char *nptr, char **endptr, int base)
  19 {
  20     RETURN_STATUS   Status;
  21     UINTN           ReturnValue;
  22
  23     ASSERT (base == 10 || base == 16);
  24
  25     if (base == 10) {
  26       Status = AsciiStrDecimalToUintnS (nptr, endptr, &ReturnValue);
  27     } else if (base == 16) {
  28       Status = AsciiStrHexToUintnS (nptr, endptr, &ReturnValue);
  29     } else {
  30       Status = RETURN_INVALID_PARAMETER;
  31     }
  32
  33     if (RETURN_ERROR (Status)) {
  34       return MAX_UINTN;
  35     }
  36
  37     return ReturnValue;
  38 }