1 #ifndef _STRINGS_H 2 #define _STRINGS_H 3 4 FILE_LICENCE ( GPL2_OR_LATER ); 5 6 #include <limits.h> 7 #include <string.h> 8 9 static inline __attribute__ (( always_inline )) int 10 __constant_flsl ( unsigned long x ) { 11 int r = 0; 12 13 #if ULONG_MAX > 0xffffffff 14 if ( x & 0xffffffff00000000UL ) { 15 x >>= 32; 16 r += 32; 17 } 18 #endif 19 if ( x & 0xffff0000UL ) { 20 x >>= 16; 21 r += 16; 22 } 23 if ( x & 0xff00 ) { 24 x >>= 8; 25 r += 8; 26 } 27 if ( x & 0xf0 ) { 28 x >>= 4; 29 r += 4; 30 } 31 if ( x & 0xc ) { 32 x >>= 2; 33 r += 2; 34 } 35 if ( x & 0x2 ) { 36 x >>= 1; 37 r += 1; 38 } 39 if ( x & 0x1 ) { 40 r += 1; 41 } 42 return r; 43 } 44 45 /* We don't actually have these functions yet */ 46 extern int __flsl ( long x ); 47 48 #define flsl( x ) \ 49 ( __builtin_constant_p ( x ) ? __constant_flsl ( x ) : __flsl ( x ) ) 50 51 #define fls( x ) flsl ( x ) 52 53 extern int strcasecmp ( const char *s1, const char *s2 ); 54 55 static inline __attribute__ (( always_inline )) void 56 bcopy ( const void *src, void *dest, size_t n ) { 57 memmove ( dest, src, n ); 58 } 59 60 static inline __attribute__ (( always_inline )) void 61 bzero ( void *s, size_t n ) { 62 memset ( s, 0, n ); 63 } 64 65 #endif /* _STRINGS_H */ 66
