String functions. More...

#include <string.h>
#include <bits/strings.h>

Macros
#define	ffsll(x) ( __builtin_constant_p ( x ) ? __constant_ffsll ( x ) : __ffsll ( x ) )
	Find first (i.e. More...

#define	ffsl(x) ( __builtin_constant_p ( x ) ? __constant_ffsl ( x ) : __ffsl ( x ) )
	Find first (i.e. More...

#define	ffs(x) ffsl ( x )
	Find first (i.e. More...

#define	flsll(x) ( __builtin_constant_p ( x ) ? __constant_flsll ( x ) : __flsll ( x ) )
	Find last (i.e. More...

#define	flsl(x) ( __builtin_constant_p ( x ) ? __constant_flsl ( x ) : __flsl ( x ) )
	Find last (i.e. More...

#define	fls(x) flsl ( x )
	Find last (i.e. More...

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)

static	__attribute__ ((always_inline)) int __constant_ffsll(unsigned long long x)
	Find first (i.e. More...

int	__ffsll (long long x)

int	__ffsl (long x)

int	__flsll (long long x)

int	__flsl (long x)

int __pure	strcasecmp (const char first, const char second) __nonnull
	Compare case-insensitive strings. More...

int __pure	strncasecmp (const char first, const char second, size_t max) __nonnull
	Compare case-insensitive strings. More...

Variables
static void *	dest

static void size_t	len

Detailed Description

String functions.

Definition in file strings.h.

Macro Definition Documentation

◆ ffsll

#define ffsll ( x ) ( __builtin_constant_p ( x ) ? __constant_ffsll ( x ) : __ffsll ( x ) )

Find first (i.e.

least significant) set bit

Parameters

x Value

Return values

lsb	Least significant bit set in value (LSB=1), or zero

Definition at line 122 of file strings.h.

◆ ffsl

#define ffsl ( x ) ( __builtin_constant_p ( x ) ? __constant_ffsl ( x ) : __ffsl ( x ) )

Find first (i.e.

least significant) set bit

Parameters

x Value

Return values

lsb	Least significant bit set in value (LSB=1), or zero

Definition at line 131 of file strings.h.

◆ ffs

#define ffs ( x ) ffsl ( x )

Find first (i.e.

least significant) set bit

Parameters

x Value

Return values

lsb	Least significant bit set in value (LSB=1), or zero

Definition at line 140 of file strings.h.

◆ flsll

#define flsll ( x ) ( __builtin_constant_p ( x ) ? __constant_flsll ( x ) : __flsll ( x ) )

Find last (i.e.

most significant) set bit

Parameters

x Value

Return values

msb	Most significant bit set in value (LSB=1), or zero

Definition at line 148 of file strings.h.

◆ flsl

#define flsl ( x ) ( __builtin_constant_p ( x ) ? __constant_flsl ( x ) : __flsl ( x ) )

Find last (i.e.

most significant) set bit

Parameters

x Value

Return values

msb	Most significant bit set in value (LSB=1), or zero

Definition at line 157 of file strings.h.

◆ fls

#define fls ( x ) flsl ( x )

Find last (i.e.

most significant) set bit

Parameters

x Value

Return values

msb	Most significant bit set in value (LSB=1), or zero

Definition at line 166 of file strings.h.

Function Documentation

◆ FILE_LICENCE()

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL )

◆ attribute()

static __attribute__ ( (always_inline) )

inlinestatic

Find first (i.e.

Zero memory.

Copy memory.

Find last (i.e.

least significant) set bit

Parameters

x Value

Return values

lsb	Least significant bit set in value (LSB=1), or zero

most significant) set bit

Parameters

x Value

Return values

msb	Most significant bit set in value (LSB=1), or zero

Parameters

src	Source
dest	Destination
len	Length
dest	Destination
len	Length

Definition at line 21 of file strings.h.

                                           {
         int r = 0;
 
         if ( ! ( x & 0x00000000ffffffffULL ) ) {
                 x >>= 32;
                 r += 32;
         }
         if ( ! ( x & 0x0000ffffUL ) ) {
                 x >>= 16;
                 r += 16;
         }
         if ( ! ( x & 0x00ff ) ) {
                 x >>= 8;
                 r += 8;
         }
         if ( ! ( x & 0x0f ) ) {
                 x >>= 4;
                 r += 4;
         }
         if ( ! ( x & 0x3 ) ) {
                 x >>= 2;
                 r += 2;
         }
         if ( ! ( x & 0x1 ) ) {
                 x >>= 1;
                 r += 1;
         }
         return ( x ? ( r + 1 ) : 0 );
 }

References r.

◆ __ffsll()

int __ffsll ( long long x )

◆ __ffsl()

int __ffsl ( long x )

◆ __flsll()

int __flsll ( long long x )

◆ __flsl()

int __flsl ( long x )

◆ strcasecmp()

int __pure strcasecmp	(	const char *	first,
		const char *	second
	)

Compare case-insensitive strings.

Parameters

first	First string
second	Second string

Return values

diff	Difference

Definition at line 208 of file string.c.

                                                          {
 
         return strncasecmp ( first, second, ~( ( size_t ) 0 ) );
 }

References first, second, and strncasecmp().

Referenced by com32_identify(), comboot_identify(), efi_block_label(), efi_file_find(), efi_file_open(), efi_local_check_volume_name(), efi_snp_hii_fetch(), efi_snp_hii_store(), http_authentication(), http_digest_authenticate(), http_format_metadata_flavor(), http_parse_connection(), http_parse_content_encoding(), http_parse_digest_auth(), http_parse_header(), http_parse_transfer_encoding(), http_scheme(), parse_fc_els_handler(), string_test_exec(), sundance_probe(), tftp_process_option(), and xfer_uri_opener().

◆ strncasecmp()

int __pure strncasecmp	(	const char *	first,
		const char *	second,
		size_t	max
	)

Compare case-insensitive strings.

Parameters

first	First string
second	Second string
max	Maximum length to compare

Return values

diff	Difference

Definition at line 221 of file string.c.

                                                                       {
         const uint8_t *first_bytes = ( ( const uint8_t * ) first );
         const uint8_t *second_bytes = ( ( const uint8_t * ) second );
         int diff;
 
         for ( ; max-- ; first_bytes++, second_bytes++ ) {
                 diff = ( toupper ( *first_bytes ) -
                          toupper ( *second_bytes ) );
                 if ( diff )
                         return diff;
                 if ( ! *first_bytes )
                         return 0;
         }
         return 0;
 }