strrchr.c File Reference

#include <string.h>

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Functions
void *	__memrchr (const void *, int, size_t)
char *	strrchr (const char *s, int c)
	Finds the last occurrence of c in the null-terminated byte string pointed to by s. More...

Function Documentation

__memrchr()

void* __memrchr	(	const void *	,
		int	,
		size_t
	)

Definition at line 7 of file memrchr.c.

{
    const unsigned char* s = m;
    c = (unsigned char)c;

    while(n--)
    {
        if(s[n] == c)
        {
            return (void*)(uintptr_t)(s + n);
        }
    }

    return 0;
}

Referenced by strrchr().

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strrchr()

char* strrchr	(	const char *	s,
		int	c
	)

Finds the last occurrence of c in the null-terminated byte string pointed to by s.

Finds the last occurrence of c (after conversion to char as if by (char)c ) in the null-terminated byte string pointed to by s (each character interpreted as unsigned char). The terminating null character is considered to be a part of the string and can be found when searching for '\0'.

The behavior is undefined if s is not a pointer to a null-terminated byte string.

Parameters

s	pointer to the null-terminated byte string to be analyzed
c	character to search for

Returns

a pointer to the found character in s, or null pointer if no such character is found.

Definition at line 7 of file strrchr.c.

{
    return __memrchr(s, c, strlen(s) + 1);
}

References __memrchr(), and strlen().