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Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.23 by root, Sun Jan 29 22:30:21 2006 UTC vs.
Revision 1.35 by root, Tue Dec 4 16:33:42 2007 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 <cstdlib>
5#include <cstring> 5#include <cstring>
6
7using namespace std;
6 8
7#define PP_CONCAT_(a, b) a ## b 9#define PP_CONCAT_(a, b) a ## b
8#define PP_CONCAT(a, b) PP_CONCAT_(a, b) 10#define PP_CONCAT(a, b) PP_CONCAT_(a, b)
9#define PP_STRINGIFY_(a) #a 11#define PP_STRINGIFY_(a) #a
10#define PP_STRINGIFY(a) PP_STRINGIFY_(a) 12#define PP_STRINGIFY(a) PP_STRINGIFY_(a)
11 13
12// actually, some gcc-3.x versions work, too 14#define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4))
13#define HAVE_GCC_BUILTINS (__GNUC__ >= 4) 15
16#if __GNUC__ >= 4
17# define rxvt_attribute(x) __attribute__(x)
18#else
19# define rxvt_attribute(x)
20#endif
21
22#define NORETURN rxvt_attribute ((noreturn))
23#define UNUSED rxvt_attribute ((unused))
24#define CONST rxvt_attribute ((const))
25
26// increases code size unless -fno-enforce-eh-specs
27#if __GNUC__
28# define NOTHROW
29# define THROW(x)
30#else
31# define NOTHROW throw()
32# define THROW(x) throw x
33#endif
14 34
15extern class byteorder { 35extern class byteorder {
16 static unsigned int e; // at least 32 bits 36 static unsigned int e; // at least 32 bits
17public: 37public:
18 byteorder (); 38 byteorder ();
… …
32template<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; } 52template<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 void clamp_it (T &v, U a, V b) { v = v < (T)a ? a : v >(T)b ? b : v; } 53template<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; }
34 54
35template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } 55template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
36 56
57template<typename T> static inline T squared_diff (T a, T b) { return (a-b)*(a-b); }
58
37// linear interpolation 59// linear interpolation
38template<typename T, typename U, typename P> 60template<typename T, typename U, typename P>
39static inline 61static inline
40T lerp (T a, U b, P p) 62T lerp (T a, U b, P p)
41{ 63{
42 return (int(a) * int(p) + int(b) * int(100 - p)) / 100; 64 return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
65}
66
67template <typename I, typename T>
68I find (I first, I last, const T& value)
69{
70 while (first != last && *first != value)
71 ++first;
72
73 return first;
74}
75
76// return a very temporary (and never deallocated) buffer. keep small.
77void *rxvt_temp_buf (int len);
78
79template<typename T>
80static inline T *
81rxvt_temp_buf (int len)
82{
83 return (T *)rxvt_temp_buf (len * sizeof (T));
43} 84}
44 85
45// some bit functions, xft fuck me plenty 86// some bit functions, xft fuck me plenty
46#if HAVE_GCC_BUILTINS 87#if HAVE_GCC_BUILTINS
47static inline int ctz (unsigned int x) { return __builtin_ctz (x); } 88static inline int ctz (unsigned int x) { return __builtin_ctz (x); }
48static inline int popcount (unsigned int x) { return __builtin_popcount (x); } 89static inline int popcount (unsigned int x) { return __builtin_popcount (x); }
49#else 90#else
50// count trailing zero bits and count # of one bits 91// count trailing zero bits and count # of one bits
51int ctz (unsigned int x); 92int ctz (unsigned int x) CONST;
52int popcount (unsigned int x); 93int popcount (unsigned int x) CONST;
53#endif 94#endif
54 95
55// in range including end 96// in range including end
56#define IN_RANGE_INC(val,beg,end) \ 97#define IN_RANGE_INC(val,beg,end) \
57 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) 98 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
… …
65 void *operator new (size_t s); 106 void *operator new (size_t s);
66 void operator delete (void *p, size_t s); 107 void operator delete (void *p, size_t s);
67}; 108};
68 109
69/* simplevec taken (and heavily modified), from: 110/* simplevec taken (and heavily modified), from:
70 * 111 *
71 * MICO --- a free CORBA implementation 112 * MICO --- a free CORBA implementation
72 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 113 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
73 */ 114 */
74template<class T> 115template<class T>
75struct simplevec { 116struct simplevec {
… …
321} 362}
322 363
323 364
324template<typename T> 365template<typename T>
325struct vector : simplevec<T> 366struct vector : simplevec<T>
326{ }; 367{
368};
369
370struct stringvec : simplevec<char *>
371{
372 ~stringvec ()
373 {
374 for (char **c = begin (); c != end (); c++)
375 free (*c);
376 }
377};
327 378
328#if 0 379#if 0
329template<typename T> 380template<typename T>
330struct rxvt_vec : simplevec<void *> { 381struct rxvt_vec : simplevec<void *> {
331 typedef T *iterator; 382 typedef T *iterator;
… …
339 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } 390 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); }
340 const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); } 391 const T &operator [] (int i) const { return * (const T *) (& ((* (const simplevec<void *> *)this)[i])); }
341}; 392};
342#endif 393#endif
343 394
344template <typename I, typename T>
345I find (I first, I last, const T& value)
346{
347 while (first != last && *first != value)
348 ++first;
349
350 return first;
351}
352
353template<typename T> 395template<typename T>
354struct auto_ptr { 396struct auto_ptr {
355 T *p; 397 T *p;
356 398
357 auto_ptr () : p (0) { } 399 auto_ptr () : p (0) { }
… …
408 } 450 }
409}; 451};
410 452
411typedef auto_ptr<char> auto_str; 453typedef auto_ptr<char> auto_str;
412 454
413struct stringvec : simplevec<char *>
414{
415 ~stringvec ()
416 {
417 for (char **c = begin (); c != end (); c++)
418 free (*c);
419 }
420};
421
422// return a very temporary (and never deallocated) buffer. keep small.
423void *rxvt_temp_buf (int len);
424
425template<typename T>
426inline T *
427rxvt_temp_buf (int len)
428{
429 return (T *)rxvt_temp_buf (len * sizeof (T));
430}
431
432#endif 455#endif
433 456

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