1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifdef __cplusplus

    19 extern "C" {

    20 #endif

    21 		

    22 char * strchr (const char *p, int ch)

    23 	{

    24 	char c;

    25 

    26 	c = ch;

    27 	for (;; ++p) 

    28 		{

    29 		if (*p == c)

    30 			return ((char *)p);

    31 		if (*p == '\0')

    32 			return (char *)(0);

    33 		}

    34 	/* NOTREACHED */

    35 	}

    36 

    37 unsigned int strlen(const char *str)

    38 	{

    39 	const char *s;

    40 	for (s = str; *s; ++s)	{	}

    41 

    42 	return(s - str);

    43 	}

    44 

    45 int strcmp(const char *s1, const char *s2)

    46 	{

    47 	while (*s1 == *s2++)

    48 		if (*s1++ == 0)

    49 			return (0);

    50 	return (*(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1));

    51 	}

    52 

    53 void * memchr(const void *s, int c, unsigned n)

    54 	{

    55 	if (n != 0) 

    56 		{

    57 		const unsigned char *p = s;

    58 		do 

    59 			{

    60 			if (*p++ == (unsigned char)c)

    61 				return ((void *)(p - 1));

    62 			} while (--n != 0);

    63 	

    64 		}

    65 	// Not found

    66 	return (void *)0;

    67 	}

    68 

    69 int memcmp(const void *s1, const void *s2, unsigned n)

    70 	{

    71 	if (n != 0) 

    72 		{

    73 		const unsigned char *p1 = s1, *p2 = s2;

    74 

    75 		do 

    76 			{

    77 			if (*p1++ != *p2++)

    78 				return (*--p1 - *--p2);

    79 			} while (--n != 0);

    80 		}

    81 	return (0);

    82 	}

    83 

    84 #ifdef __cplusplus

    85 }

    86 #endif