ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/rxvt-unicode/src/rxvtutil.h
(Generate patch)

Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.17 by root, Thu Jan 12 00:35:39 2006 UTC vs.
Revision 1.22 by root, Sun Jan 29 22:27:04 2006 UTC

1#ifndef RXVT_UTIL_H 1#ifndef RXVT_UTIL_H
2#define RXVT_UTIL_H 2#define RXVT_UTIL_H
3 3
4#include <cstdlib>
4#include <cstring> 5#include <cstring>
5 6
6#define PP_CONCAT_(a, b) a ## b 7#define PP_CONCAT_(a, b) a ## b
7#define PP_CONCAT(a, b) PP_CONCAT_(a, b) 8#define PP_CONCAT(a, b) PP_CONCAT_(a, b)
8#define PP_STRINGIFY_(a) #a 9#define PP_STRINGIFY_(a) #a
9#define PP_STRINGIFY(a) PP_STRINGIFY_(a) 10#define PP_STRINGIFY(a) PP_STRINGIFY_(a)
11
12// actually, some gcc-3.x versions work, too
13#define HAVE_GCC_BUILTINS (__GNUC__ >= 4)
14#define HAVE_GCC_BUILTINS 0
10 15
11extern class byteorder { 16extern class byteorder {
12 static unsigned int e; // at least 32 bits 17 static unsigned int e; // at least 32 bits
13public: 18public:
14 byteorder (); 19 byteorder ();
… …
27 32
28template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; } 33template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; }
29template<typename T, typename U, typename V> static inline void clamp_it (T &v, U a, V b) { v = v < (T)a ? a : v >(T)b ? b : v; } 34template<typename T, typename U, typename V> static inline void clamp_it (T &v, U a, V b) { v = v < (T)a ? a : v >(T)b ? b : v; }
30 35
31template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } 36template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
37
38// linear interpolation
39template<typename T, typename U, typename P>
40static inline
41T lerp (T a, U b, P p)
42{
43 return (int(a) * int(p) + int(b) * int(100 - p)) / 100;
44}
45
46// some bit functions, xft fuck me plenty
47#if HAVE_GCC_BUILTINS
48static inline int ctz (unsigned int x) { return __builtin_ctz (x); }
49static inline int popcount (unsigned int x) { return __builtin_popcount (x); }
50#else
51// count trailing zero bits and count # of one bits
52int ctz (unsigned int x);
53int popcount (unsigned int x);
54#endif
32 55
33// in range including end 56// in range including end
34#define IN_RANGE_INC(val,beg,end) \ 57#define IN_RANGE_INC(val,beg,end) \
35 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) 58 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
36 59
… …
256 return pos; 279 return pos;
257 } 280 }
258 void erase (iterator first, iterator last) 281 void erase (iterator first, iterator last)
259 { 282 {
260 if (last != first) { 283 if (last != first) {
261 memmove (first, last, (end ()-last)*sizeof (T)); 284 memmove (first, last, (end () - last) * sizeof (T));
262 _last -= last - first; 285 _last -= last - first;
263 } 286 }
264 } 287 }
265 void erase (iterator pos) 288 void erase (iterator pos)
266 { 289 {
267 if (pos != end ()) { 290 if (pos != end ()) {
268 memmove (pos, pos+1, (end ()- (pos+1))*sizeof (T)); 291 memmove (pos, pos+1, (end () - (pos+1)) * sizeof (T));
269 --_last; 292 --_last;
270 } 293 }
271 } 294 }
272 void swap (simplevec<T> &t) 295 void swap (simplevec<T> &t)
273 { 296 {
… …
391struct stringvec : simplevec<char *> 414struct stringvec : simplevec<char *>
392{ 415{
393 ~stringvec () 416 ~stringvec ()
394 { 417 {
395 for (char **c = begin (); c != end (); c++) 418 for (char **c = begin (); c != end (); c++)
396 delete [] *c; 419 free (*c);
397 } 420 }
398}; 421};
399 422
423// return a very temporary (and never deallocated) buffer. keep small.
424void *rxvt_temp_buf (int len);
425
426template<typename T>
427inline T *
428rxvt_temp_buf (int len)
429{
430 return (T *)rxvt_temp_buf (len * sizeof (T));
431}
432
400#endif 433#endif
401 434

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines