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 /******************************************************************************
  *
  * Module Name: utclib - ACPICA implementations of C library functions
  *
  *****************************************************************************/
 
 /******************************************************************************
  *
  * 1. Copyright Notice
  *
  * Some or all of this work - Copyright (c) 1999 - 2024, Intel Corp.
  * All rights reserved.
  *
  * 2. License
  *
  * 2.1. This is your license from Intel Corp. under its intellectual property
  * rights. You may have additional license terms from the party that provided
  * you this software, covering your right to use that party's intellectual
  * property rights.
  *
  * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
  * copy of the source code appearing in this file ("Covered Code") an
  * irrevocable, perpetual, worldwide license under Intel's copyrights in the
  * base code distributed originally by Intel ("Original Intel Code") to copy,
  * make derivatives, distribute, use and display any portion of the Covered
  * Code in any form, with the right to sublicense such rights; and
  *
  * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
  * license (with the right to sublicense), under only those claims of Intel
  * patents that are infringed by the Original Intel Code, to make, use, sell,
  * offer to sell, and import the Covered Code and derivative works thereof
  * solely to the minimum extent necessary to exercise the above copyright
  * license, and in no event shall the patent license extend to any additions
  * to or modifications of the Original Intel Code. No other license or right
  * is granted directly or by implication, estoppel or otherwise;
  *
  * The above copyright and patent license is granted only if the following
  * conditions are met:
  *
  * 3. Conditions
  *
  * 3.1. Redistribution of Source with Rights to Further Distribute Source.
  * Redistribution of source code of any substantial portion of the Covered
  * Code or modification with rights to further distribute source must include
  * the above Copyright Notice, the above License, this list of Conditions,
  * and the following Disclaimer and Export Compliance provision. In addition,
  * Licensee must cause all Covered Code to which Licensee contributes to
  * contain a file documenting the changes Licensee made to create that Covered
  * Code and the date of any change. Licensee must include in that file the
  * documentation of any changes made by any predecessor Licensee. Licensee
  * must include a prominent statement that the modification is derived,
  * directly or indirectly, from Original Intel Code.
  *
  * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
  * Redistribution of source code of any substantial portion of the Covered
  * Code or modification without rights to further distribute source must
  * include the following Disclaimer and Export Compliance provision in the
  * documentation and/or other materials provided with distribution. In
  * addition, Licensee may not authorize further sublicense of source of any
  * portion of the Covered Code, and must include terms to the effect that the
  * license from Licensee to its licensee is limited to the intellectual
  * property embodied in the software Licensee provides to its licensee, and
  * not to intellectual property embodied in modifications its licensee may
  * make.
  *
  * 3.3. Redistribution of Executable. Redistribution in executable form of any
  * substantial portion of the Covered Code or modification must reproduce the
  * above Copyright Notice, and the following Disclaimer and Export Compliance
  * provision in the documentation and/or other materials provided with the
  * distribution.
  *
  * 3.4. Intel retains all right, title, and interest in and to the Original
  * Intel Code.
  *
  * 3.5. Neither the name Intel nor any other trademark owned or controlled by
  * Intel shall be used in advertising or otherwise to promote the sale, use or
  * other dealings in products derived from or relating to the Covered Code
  * without prior written authorization from Intel.
  *
  * 4. Disclaimer and Export Compliance
  *
  * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
  * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
  * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
  * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
  * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
  * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
  * PARTICULAR PURPOSE.
  *
  * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
  * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
  * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
  * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
  * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
  * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
  * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
  * LIMITED REMEDY.
  *
  * 4.3. Licensee shall not export, either directly or indirectly, any of this
  * software or system incorporating such software without first obtaining any
  * required license or other approval from the U. S. Department of Commerce or
  * any other agency or department of the United States Government. In the
  * event Licensee exports any such software from the United States or
  * re-exports any such software from a foreign destination, Licensee shall
  * ensure that the distribution and export/re-export of the software is in
  * compliance with all laws, regulations, orders, or other restrictions of the
  * U.S. Export Administration Regulations. Licensee agrees that neither it nor
  * any of its subsidiaries will export/re-export any technical data, process,
  * software, or service, directly or indirectly, to any country for which the
  * United States government or any agency thereof requires an export license,
  * other governmental approval, or letter of assurance, without first obtaining
  * such license, approval or letter.
  *
  *****************************************************************************
  *
  * Alternatively, you may choose to be licensed under the terms of the
  * following license:
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions, and the following disclaimer,
  *    without modification.
  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  *    substantially similar to the "NO WARRANTY" disclaimer below
  *    ("Disclaimer") and any redistribution must be conditioned upon
  *    including a substantially similar Disclaimer requirement for further
  *    binary redistribution.
  * 3. Neither the names of the above-listed copyright holders nor the names
  *    of any contributors may be used to endorse or promote products derived
  *    from this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Alternatively, you may choose to be licensed under the terms of the
  * GNU General Public License ("GPL") version 2 as published by the Free
  * Software Foundation.
  *
  *****************************************************************************/
 
 #define ACPI_CLIBRARY
 #include "acpi.h"
 #include "accommon.h"
 
 /*
  * This module contains implementations of the standard C library functions
  * that are required by the ACPICA code at both application level and kernel
  * level.
  *
  * The module is an optional feature that can be used if a local/system
  * C library is not available. Some operating system kernels may not have
  * an internal C library.
  *
  * In general, these functions are less efficient than an inline or assembly
  * code implementation.
  *
  * These C functions and the associated prototypes are enabled by default
  * unless the ACPI_USE_SYSTEM_CLIBRARY symbol is defined. This is usually
  * automatically defined for the ACPICA applications such as iASL and
  * AcpiExec, so that these user-level applications use the local C library
  * instead of the functions in this module.
  */
 
 /*******************************************************************************
  *
  * Functions implemented in this module:
  *
  * FUNCTION:    memcmp
  * FUNCTION:    memcpy
  * FUNCTION:    memset
  * FUNCTION:    strlen
  * FUNCTION:    strcpy
  * FUNCTION:    strncpy
  * FUNCTION:    strcmp
  * FUNCTION:    strchr
  * FUNCTION:    strncmp
  * FUNCTION:    strcat
  * FUNCTION:    strncat
  * FUNCTION:    strstr
  * FUNCTION:    strtoul
  * FUNCTION:    toupper
  * FUNCTION:    tolower
  * FUNCTION:    is* functions
  *
  ******************************************************************************/
 
 #define _COMPONENT          ACPI_UTILITIES
         ACPI_MODULE_NAME    ("utclib")
 
 
 #ifndef ACPI_USE_SYSTEM_CLIBRARY    /* Entire module */
 
 
 /*******************************************************************************
  *
  * FUNCTION:    memcmp
  *
  * PARAMETERS:  Buffer1         - First Buffer
  *              Buffer2         - Second Buffer
  *              Count           - Maximum # of bytes to compare
  *
  * RETURN:      Index where Buffers mismatched, or 0 if Buffers matched
  *
  * DESCRIPTION: Compare two Buffers, with a maximum length
  *
  ******************************************************************************/
 
 int
 memcmp (
     void                    *VBuffer1,
     void                    *VBuffer2,
     ACPI_SIZE               Count)
 {
     char                    *Buffer1 = (char *) VBuffer1;
     char                    *Buffer2 = (char *) VBuffer2;
 
 
     for ( ; Count-- && (*Buffer1 == *Buffer2); Buffer1++, Buffer2++)
     {
     }
 
     return ((Count == ACPI_SIZE_MAX) ? 0 : ((unsigned char) *Buffer1 -
         (unsigned char) *Buffer2));
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    memmove
  *
  * PARAMETERS:  Dest        - Target of the copy
  *              Src         - Source buffer to copy
  *              Count       - Number of bytes to copy
  *
  * RETURN:      Dest
  *
  * DESCRIPTION: Copy arbitrary bytes of memory with respect to the overlapping
  *
  ******************************************************************************/
 
 void *
 memmove (
     void                    *Dest,
     const void              *Src,
     ACPI_SIZE               Count)
 {
     char                    *New = (char *) Dest;
     char                    *Old = (char *) Src;
 
 
     if (Old > New)
     {
         /* Copy from the beginning */
 
         while (Count)
         {
             *New = *Old;
             New++;
             Old++;
             Count--;
         }
     }
     else if (Old < New)
     {
         /* Copy from the end */
 
         New = New + Count - 1;
         Old = Old + Count - 1;
         while (Count)
         {
             *New = *Old;
             New--;
             Old--;
             Count--;
         }
     }
 
     return (Dest);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    memcpy
  *
  * PARAMETERS:  Dest        - Target of the copy
  *              Src         - Source buffer to copy
  *              Count       - Number of bytes to copy
  *
  * RETURN:      Dest
  *
  * DESCRIPTION: Copy arbitrary bytes of memory
  *
  ******************************************************************************/
 
 void *
 memcpy (
     void                    *Dest,
     const void              *Src,
     ACPI_SIZE               Count)
 {
     char                    *New = (char *) Dest;
     char                    *Old = (char *) Src;
 
 
     while (Count)
     {
         *New = *Old;
         New++;
         Old++;
         Count--;
     }
 
     return (Dest);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    memset
  *
  * PARAMETERS:  Dest        - Buffer to set
  *              Value       - Value to set each byte of memory
  *              Count       - Number of bytes to set
  *
  * RETURN:      Dest
  *
  * DESCRIPTION: Initialize a buffer to a known value.
  *
  ******************************************************************************/
 
 void *
 memset (
     void                    *Dest,
     int                     Value,
     ACPI_SIZE               Count)
 {
     char                    *New = (char *) Dest;
 
 
     while (Count)
     {
         *New = (char) Value;
         New++;
         Count--;
     }
 
     return (Dest);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strlen
  *
  * PARAMETERS:  String              - Null terminated string
  *
  * RETURN:      Length
  *
  * DESCRIPTION: Returns the length of the input string
  *
  ******************************************************************************/
 
 
 ACPI_SIZE
 strlen (
     const char              *String)
 {
     UINT32                  Length = 0;
 
 
     /* Count the string until a null is encountered */
 
     while (*String)
     {
         Length++;
         String++;
     }
 
     return (Length);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strpbrk
  *
  * PARAMETERS:  String              - Null terminated string
  *              Delimiters          - Delimiters to match
  *
  * RETURN:      The first occurrence in the string of any of the bytes in the
  *              delimiters
  *
  * DESCRIPTION: Search a string for any of a set of the delimiters
  *
  ******************************************************************************/
 
 char *
 strpbrk (
     const char              *String,
     const char              *Delimiters)
 {
     const char              *Delimiter;
 
 
     for ( ; *String != '\0'; ++String)
     {
         for (Delimiter = Delimiters; *Delimiter != '\0'; Delimiter++)
         {
             if (*String == *Delimiter)
             {
                 return (ACPI_CAST_PTR (char, String));
             }
         }
     }
 
     return (NULL);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strtok
  *
  * PARAMETERS:  String              - Null terminated string
  *              Delimiters          - Delimiters to match
  *
  * RETURN:      Pointer to the next token
  *
  * DESCRIPTION: Split string into tokens
  *
  ******************************************************************************/
 
 char*
 strtok (
     char                    *String,
     const char              *Delimiters)
 {
     char                    *Begin = String;
     static char             *SavedPtr;
 
 
     if (Begin == NULL)
     {
         if (SavedPtr == NULL)
         {
             return (NULL);
         }
         Begin = SavedPtr;
     }
 
     SavedPtr = strpbrk (Begin, Delimiters);
     while (SavedPtr == Begin)
     {
         *Begin++ = '\0';
         SavedPtr = strpbrk (Begin, Delimiters);
     }
 
     if (SavedPtr)
     {
         *SavedPtr++ = '\0';
         return (Begin);
     }
     else
     {
         return (NULL);
     }
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strcpy
  *
  * PARAMETERS:  DstString       - Target of the copy
  *              SrcString       - The source string to copy
  *
  * RETURN:      DstString
  *
  * DESCRIPTION: Copy a null terminated string
  *
  ******************************************************************************/
 
 char *
 strcpy (
     char                    *DstString,
     const char              *SrcString)
 {
     char                    *String = DstString;
 
 
     /* Move bytes brute force */
 
     while (*SrcString)
     {
         *String = *SrcString;
 
         String++;
         SrcString++;
     }
 
     /* Null terminate */
 
     *String = 0;
     return (DstString);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strncpy
  *
  * PARAMETERS:  DstString       - Target of the copy
  *              SrcString       - The source string to copy
  *              Count           - Maximum # of bytes to copy
  *
  * RETURN:      DstString
  *
  * DESCRIPTION: Copy a null terminated string, with a maximum length
  *
  ******************************************************************************/
 
 char *
 strncpy (
     char                    *DstString,
     const char              *SrcString,
     ACPI_SIZE               Count)
 {
     char                    *String = DstString;
 
 
     /* Copy the string */
 
     for (String = DstString;
         Count && (Count--, (*String++ = *SrcString++)); )
     {;}
 
     /* Pad with nulls if necessary */
 
     while (Count--)
     {
         *String = 0;
         String++;
     }
 
     /* Return original pointer */
 
     return (DstString);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strcmp
  *
  * PARAMETERS:  String1         - First string
  *              String2         - Second string
  *
  * RETURN:      Index where strings mismatched, or 0 if strings matched
  *
  * DESCRIPTION: Compare two null terminated strings
  *
  ******************************************************************************/
 
 int
 strcmp (
     const char              *String1,
     const char              *String2)
 {
 
 
     for ( ; (*String1 == *String2); String2++)
     {
         if (!*String1++)
         {
             return (0);
         }
     }
 
     return ((unsigned char) *String1 - (unsigned char) *String2);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strchr
  *
  * PARAMETERS:  String          - Search string
  *              ch              - character to search for
  *
  * RETURN:      Ptr to char or NULL if not found
  *
  * DESCRIPTION: Search a string for a character
  *
  ******************************************************************************/
 
 char *
 strchr (
     const char              *String,
     int                     ch)
 {
 
 
     for ( ; (*String); String++)
     {
         if ((*String) == (char) ch)
         {
             return ((char *) String);
         }
     }
 
     return (NULL);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strncmp
  *
  * PARAMETERS:  String1         - First string
  *              String2         - Second string
  *              Count           - Maximum # of bytes to compare
  *
  * RETURN:      Index where strings mismatched, or 0 if strings matched
  *
  * DESCRIPTION: Compare two null terminated strings, with a maximum length
  *
  ******************************************************************************/
 
 int
 strncmp (
     const char              *String1,
     const char              *String2,
     ACPI_SIZE               Count)
 {
 
 
     for ( ; Count-- && (*String1 == *String2); String2++)
     {
         if (!*String1++)
         {
             return (0);
         }
     }
 
     return ((Count == ACPI_SIZE_MAX) ? 0 : ((unsigned char) *String1 -
         (unsigned char) *String2));
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strcat
  *
  * PARAMETERS:  DstString       - Target of the copy
  *              SrcString       - The source string to copy
  *
  * RETURN:      DstString
  *
  * DESCRIPTION: Append a null terminated string to a null terminated string
  *
  ******************************************************************************/
 
 char *
 strcat (
     char                    *DstString,
     const char              *SrcString)
 {
     char                    *String;
 
 
     /* Find end of the destination string */
 
     for (String = DstString; *String++; )
     { ; }
 
     /* Concatenate the string */
 
     for (--String; (*String++ = *SrcString++); )
     { ; }
 
     return (DstString);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strncat
  *
  * PARAMETERS:  DstString       - Target of the copy
  *              SrcString       - The source string to copy
  *              Count           - Maximum # of bytes to copy
  *
  * RETURN:      DstString
  *
  * DESCRIPTION: Append a null terminated string to a null terminated string,
  *              with a maximum count.
  *
  ******************************************************************************/
 
 char *
 strncat (
     char                    *DstString,
     const char              *SrcString,
     ACPI_SIZE               Count)
 {
     char                    *String;
 
 
     if (Count)
     {
         /* Find end of the destination string */
 
         for (String = DstString; *String++; )
         { ; }
 
         /* Concatenate the string */
 
         for (--String; (*String++ = *SrcString++) && --Count; )
         { ; }
 
         /* Null terminate if necessary */
 
         if (!Count)
         {
             *String = 0;
         }
     }
 
     return (DstString);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strstr
  *
  * PARAMETERS:  String1         - Target string
  *              String2         - Substring to search for
  *
  * RETURN:      Where substring match starts, Null if no match found
  *
  * DESCRIPTION: Checks if String2 occurs in String1. This is not really a
  *              full implementation of strstr, only sufficient for command
  *              matching
  *
  ******************************************************************************/
 
 char *
 strstr (
     char                    *String1,
     char                    *String2)
 {
     ACPI_SIZE               Length;
 
 
     Length = strlen (String2);
     if (!Length)
     {
         return (String1);
     }
 
     while (strlen (String1) >= Length)
     {
         if (memcmp (String1, String2, Length) == 0)
         {
             return (String1);
         }
         String1++;
     }
 
     return (NULL);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    strtoul
  *
  * PARAMETERS:  String          - Null terminated string
  *              Terminator      - Where a pointer to the terminating byte is
  *                                returned
  *              Base            - Radix of the string
  *
  * RETURN:      Converted value
  *
  * DESCRIPTION: Convert a string into a 32-bit unsigned value.
  *              Note: use strtoul64 for 64-bit integers.
  *
  ******************************************************************************/
 
 UINT32
 strtoul (
     const char              *String,
     char                    **Terminator,
     UINT32                  Base)
 {
     UINT32                  converted = 0;
     UINT32                  index;
     UINT32                  sign;
     const char              *StringStart;
     UINT32                  ReturnValue = 0;
     ACPI_STATUS             Status = AE_OK;
 
 
     /*
      * Save the value of the pointer to the buffer's first
      * character, save the current errno value, and then
      * skip over any white space in the buffer:
      */
     StringStart = String;
     while (isspace (*String) || *String == '\t')
     {
         ++String;
     }
 
     /*
      * The buffer may contain an optional plus or minus sign.
      * If it does, then skip over it but remember what is was:
      */
     if (*String == '-')
     {
         sign = ACPI_SIGN_NEGATIVE;
         ++String;
     }
     else if (*String == '+')
     {
         ++String;
         sign = ACPI_SIGN_POSITIVE;
     }
     else
     {
         sign = ACPI_SIGN_POSITIVE;
     }
 
     /*
      * If the input parameter Base is zero, then we need to
      * determine if it is octal, decimal, or hexadecimal:
      */
     if (Base == 0)
     {
         if (*String == '0')
         {
             if (tolower (*(++String)) == 'x')
             {
                 Base = 16;
                 ++String;
             }
             else
             {
                 Base = 8;
             }
         }
         else
         {
             Base = 10;
         }
     }
     else if (Base < 2 || Base > 36)
     {
         /*
          * The specified Base parameter is not in the domain of
          * this function:
          */
         goto done;
     }
 
     /*
      * For octal and hexadecimal bases, skip over the leading
      * 0 or 0x, if they are present.
      */
     if (Base == 8 && *String == '0')
     {
         String++;
     }
 
     if (Base == 16 &&
         *String == '0' &&
         tolower (*(++String)) == 'x')
     {
         String++;
     }
 
     /*
      * Main loop: convert the string to an unsigned long:
      */
     while (*String)
     {
         if (isdigit (*String))
         {
             index = (UINT32) ((UINT8) *String - '0');
         }
         else
         {
             index = (UINT32) toupper (*String);
             if (isupper (index))
             {
                 index = index - 'A' + 10;
             }
             else
             {
                 goto done;
             }
         }
 
         if (index >= Base)
         {
             goto done;
         }
 
         /*
          * Check to see if value is out of range:
          */
 
         if (ReturnValue > ((ACPI_UINT32_MAX - (UINT32) index) /
                             (UINT32) Base))
         {
             Status = AE_ERROR;
             ReturnValue = 0;           /* reset */
         }
         else
         {
             ReturnValue *= Base;
             ReturnValue += index;
             converted = 1;
         }
 
         ++String;
     }
 
 done:
     /*
      * If appropriate, update the caller's pointer to the next
      * unconverted character in the buffer.
      */
     if (Terminator)
     {
         if (converted == 0 && ReturnValue == 0 && String != NULL)
         {
             *Terminator = (char *) StringStart;
         }
         else
         {
             *Terminator = (char *) String;
         }
     }
 
     if (Status == AE_ERROR)
     {
         ReturnValue = ACPI_UINT32_MAX;
     }
 
     /*
      * If a minus sign was present, then "the conversion is negated":
      */
     if (sign == ACPI_SIGN_NEGATIVE)
     {
         ReturnValue = (ACPI_UINT32_MAX - ReturnValue) + 1;
     }
 
     return (ReturnValue);
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    toupper
  *
  * PARAMETERS:  c           - Character to convert
  *
  * RETURN:      Converted character as an int
  *
  * DESCRIPTION: Convert character to uppercase
  *
  ******************************************************************************/
 
 int
 toupper (
     int                     c)
 {
 
     return (islower(c) ? ((c)-0x20) : (c));
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    tolower
  *
  * PARAMETERS:  c           - Character to convert
  *
  * RETURN:      Converted character as an int
  *
  * DESCRIPTION: Convert character to lowercase
  *
  ******************************************************************************/
 
 int
 tolower (
     int                     c)
 {
 
     return (isupper(c) ? ((c)+0x20) : (c));
 }
 
 
 /*******************************************************************************
  *
  * FUNCTION:    is* function array
  *
  * DESCRIPTION: is* functions use the ctype table below
  *
  ******************************************************************************/
 
 const UINT8 AcpiGbl_Ctypes[257] = {
     _ACPI_CN,            /* 0x00     0 NUL */
     _ACPI_CN,            /* 0x01     1 SOH */
     _ACPI_CN,            /* 0x02     2 STX */
     _ACPI_CN,            /* 0x03     3 ETX */
     _ACPI_CN,            /* 0x04     4 EOT */
     _ACPI_CN,            /* 0x05     5 ENQ */
     _ACPI_CN,            /* 0x06     6 ACK */
     _ACPI_CN,            /* 0x07     7 BEL */
     _ACPI_CN,            /* 0x08     8 BS  */
     _ACPI_CN|_ACPI_SP,   /* 0x09     9 TAB */
     _ACPI_CN|_ACPI_SP,   /* 0x0A    10 LF  */
     _ACPI_CN|_ACPI_SP,   /* 0x0B    11 VT  */
     _ACPI_CN|_ACPI_SP,   /* 0x0C    12 FF  */
     _ACPI_CN|_ACPI_SP,   /* 0x0D    13 CR  */
     _ACPI_CN,            /* 0x0E    14 SO  */
     _ACPI_CN,            /* 0x0F    15 SI  */
     _ACPI_CN,            /* 0x10    16 DLE */
     _ACPI_CN,            /* 0x11    17 DC1 */
     _ACPI_CN,            /* 0x12    18 DC2 */
     _ACPI_CN,            /* 0x13    19 DC3 */
     _ACPI_CN,            /* 0x14    20 DC4 */
     _ACPI_CN,            /* 0x15    21 NAK */
     _ACPI_CN,            /* 0x16    22 SYN */
     _ACPI_CN,            /* 0x17    23 ETB */
     _ACPI_CN,            /* 0x18    24 CAN */
     _ACPI_CN,            /* 0x19    25 EM  */
     _ACPI_CN,            /* 0x1A    26 SUB */
     _ACPI_CN,            /* 0x1B    27 ESC */
     _ACPI_CN,            /* 0x1C    28 FS  */
     _ACPI_CN,            /* 0x1D    29 GS  */
     _ACPI_CN,            /* 0x1E    30 RS  */
     _ACPI_CN,            /* 0x1F    31 US  */
     _ACPI_XS|_ACPI_SP,   /* 0x20    32 ' ' */
     _ACPI_PU,            /* 0x21    33 '!' */
     _ACPI_PU,            /* 0x22    34 '"' */
     _ACPI_PU,            /* 0x23    35 '#' */
     _ACPI_PU,            /* 0x24    36 '$' */
     _ACPI_PU,            /* 0x25    37 '%' */
     _ACPI_PU,            /* 0x26    38 '&' */
     _ACPI_PU,            /* 0x27    39 ''' */
     _ACPI_PU,            /* 0x28    40 '(' */
     _ACPI_PU,            /* 0x29    41 ')' */
     _ACPI_PU,            /* 0x2A    42 '*' */
     _ACPI_PU,            /* 0x2B    43 '+' */
     _ACPI_PU,            /* 0x2C    44 ',' */
     _ACPI_PU,            /* 0x2D    45 '-' */
     _ACPI_PU,            /* 0x2E    46 '.' */
     _ACPI_PU,            /* 0x2F    47 '/' */
     _ACPI_XD|_ACPI_DI,   /* 0x30    48 '0' */
     _ACPI_XD|_ACPI_DI,   /* 0x31    49 '1' */
     _ACPI_XD|_ACPI_DI,   /* 0x32    50 '2' */
     _ACPI_XD|_ACPI_DI,   /* 0x33    51 '3' */
     _ACPI_XD|_ACPI_DI,   /* 0x34    52 '4' */
     _ACPI_XD|_ACPI_DI,   /* 0x35    53 '5' */
     _ACPI_XD|_ACPI_DI,   /* 0x36    54 '6' */
     _ACPI_XD|_ACPI_DI,   /* 0x37    55 '7' */
     _ACPI_XD|_ACPI_DI,   /* 0x38    56 '8' */
     _ACPI_XD|_ACPI_DI,   /* 0x39    57 '9' */
     _ACPI_PU,            /* 0x3A    58 ':' */
     _ACPI_PU,            /* 0x3B    59 ';' */
     _ACPI_PU,            /* 0x3C    60 '<' */
     _ACPI_PU,            /* 0x3D    61 '=' */
     _ACPI_PU,            /* 0x3E    62 '>' */
     _ACPI_PU,            /* 0x3F    63 '?' */
     _ACPI_PU,            /* 0x40    64 '@' */
     _ACPI_XD|_ACPI_UP,   /* 0x41    65 'A' */
     _ACPI_XD|_ACPI_UP,   /* 0x42    66 'B' */
     _ACPI_XD|_ACPI_UP,   /* 0x43    67 'C' */
     _ACPI_XD|_ACPI_UP,   /* 0x44    68 'D' */
     _ACPI_XD|_ACPI_UP,   /* 0x45    69 'E' */
     _ACPI_XD|_ACPI_UP,   /* 0x46    70 'F' */
     _ACPI_UP,            /* 0x47    71 'G' */
     _ACPI_UP,            /* 0x48    72 'H' */
     _ACPI_UP,            /* 0x49    73 'I' */
     _ACPI_UP,            /* 0x4A    74 'J' */
     _ACPI_UP,            /* 0x4B    75 'K' */
     _ACPI_UP,            /* 0x4C    76 'L' */
     _ACPI_UP,            /* 0x4D    77 'M' */
     _ACPI_UP,            /* 0x4E    78 'N' */
     _ACPI_UP,            /* 0x4F    79 'O' */
     _ACPI_UP,            /* 0x50    80 'P' */
     _ACPI_UP,            /* 0x51    81 'Q' */
     _ACPI_UP,            /* 0x52    82 'R' */
     _ACPI_UP,            /* 0x53    83 'S' */
     _ACPI_UP,            /* 0x54    84 'T' */
     _ACPI_UP,            /* 0x55    85 'U' */
     _ACPI_UP,            /* 0x56    86 'V' */
     _ACPI_UP,            /* 0x57    87 'W' */
     _ACPI_UP,            /* 0x58    88 'X' */
     _ACPI_UP,            /* 0x59    89 'Y' */
     _ACPI_UP,            /* 0x5A    90 'Z' */
     _ACPI_PU,            /* 0x5B    91 '[' */
     _ACPI_PU,            /* 0x5C    92 '\' */
     _ACPI_PU,            /* 0x5D    93 ']' */
     _ACPI_PU,            /* 0x5E    94 '^' */
     _ACPI_PU,            /* 0x5F    95 '_' */
     _ACPI_PU,            /* 0x60    96 '`' */
     _ACPI_XD|_ACPI_LO,   /* 0x61    97 'a' */
     _ACPI_XD|_ACPI_LO,   /* 0x62    98 'b' */
     _ACPI_XD|_ACPI_LO,   /* 0x63    99 'c' */
     _ACPI_XD|_ACPI_LO,   /* 0x64   100 'd' */
     _ACPI_XD|_ACPI_LO,   /* 0x65   101 'e' */
     _ACPI_XD|_ACPI_LO,   /* 0x66   102 'f' */
     _ACPI_LO,            /* 0x67   103 'g' */
     _ACPI_LO,            /* 0x68   104 'h' */
     _ACPI_LO,            /* 0x69   105 'i' */
     _ACPI_LO,            /* 0x6A   106 'j' */
     _ACPI_LO,            /* 0x6B   107 'k' */
     _ACPI_LO,            /* 0x6C   108 'l' */
     _ACPI_LO,            /* 0x6D   109 'm' */
     _ACPI_LO,            /* 0x6E   110 'n' */
     _ACPI_LO,            /* 0x6F   111 'o' */
     _ACPI_LO,            /* 0x70   112 'p' */
     _ACPI_LO,            /* 0x71   113 'q' */
     _ACPI_LO,            /* 0x72   114 'r' */
     _ACPI_LO,            /* 0x73   115 's' */
     _ACPI_LO,            /* 0x74   116 't' */
     _ACPI_LO,            /* 0x75   117 'u' */
     _ACPI_LO,            /* 0x76   118 'v' */
     _ACPI_LO,            /* 0x77   119 'w' */
     _ACPI_LO,            /* 0x78   120 'x' */
     _ACPI_LO,            /* 0x79   121 'y' */
     _ACPI_LO,            /* 0x7A   122 'z' */
     _ACPI_PU,            /* 0x7B   123 '{' */
     _ACPI_PU,            /* 0x7C   124 '|' */
     _ACPI_PU,            /* 0x7D   125 '}' */
     _ACPI_PU,            /* 0x7E   126 '~' */
     _ACPI_CN,            /* 0x7F   127 DEL */
 
     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0x80 to 0x8F    */
     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0x90 to 0x9F    */
     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xA0 to 0xAF    */
     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xB0 to 0xBF    */
     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xC0 to 0xCF    */
     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xD0 to 0xDF    */
     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xE0 to 0xEF    */
     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,  /* 0xF0 to 0xFF    */
     0                                 /* 0x100 */
 };
 
 
 #endif /* ACPI_USE_SYSTEM_CLIBRARY */

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