#include <limits.h>
#include <string.h>

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Macros
#define	LONGPTR_MASK (sizeof(long) - 1)

#define	testbyte(x)

Functions
size_t	strlen (const char *str)
	Returns the length of the given null-terminated byte string. More...

Variables
static const unsigned long	mask01 = 0x0101010101010101

static const unsigned long	mask80 = 0x8080808080808080

Macro Definition Documentation

◆ LONGPTR_MASK

#define LONGPTR_MASK (sizeof(long) - 1)

◆ testbyte

#define testbyte ( x )

Value:

do                                                  \
    {                                                   \
        if(p[x] == '\0')                                \
            return ((uintptr_t)p - (uintptr_t)str + x); \
    } while(0)

Function Documentation

◆ strlen()

size_t strlen ( const char * str )

Returns the length of the given null-terminated byte string.

Returns the length of the given null-terminated byte string, that is, the number of characters in a character array whose first element is pointed to by str up to and not including the first null character.

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

Parameters

str	pointer to the null-terminated byte string to be examined

Returns: The length of the null-terminated byte string str.

References LONGPTR_MASK, mask01, mask80, p, and testbyte.

Referenced by __strchrnul(), char_test(), embvm::basicDisplay::printString(), strcat(), strcat_test(), strcpy(), strdup(), strdup_test(), strerror_r(), strlen_test(), strncat(), strndup_test(), strnstr(), strrchr(), strxfrm(), and TEST_CASE().

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Variable Documentation

◆ mask01

const unsigned long mask01 = 0x0101010101010101

static

Referenced by strlen().

◆ mask80

const unsigned long mask80 = 0x8080808080808080