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Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.21 by root, Sun Jan 29 20:51:28 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)
13
14#define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 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
11 34
12extern class byteorder { 35extern class byteorder {
13 static unsigned int e; // at least 32 bits 36 static unsigned int e; // at least 32 bits
14public: 37public:
15 byteorder (); 38 byteorder ();
… …
29template<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; }
30template<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; }
31 54
32template<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; }
33 56
57template<typename T> static inline T squared_diff (T a, T b) { return (a-b)*(a-b); }
58
34// linear interpolation 59// linear interpolation
35template<typename T, typename U, typename P> 60template<typename T, typename U, typename P>
36static inline 61static inline
37T lerp (T a, U b, P p) 62T lerp (T a, U b, P p)
38{ 63{
39 return (int(a) * int(p) + int(b) * int(100 - p)) / 100; 64 return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
40} 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));
84}
85
86// some bit functions, xft fuck me plenty
87#if HAVE_GCC_BUILTINS
88static inline int ctz (unsigned int x) { return __builtin_ctz (x); }
89static inline int popcount (unsigned int x) { return __builtin_popcount (x); }
90#else
91// count trailing zero bits and count # of one bits
92int ctz (unsigned int x) CONST;
93int popcount (unsigned int x) CONST;
94#endif
41 95
42// in range including end 96// in range including end
43#define IN_RANGE_INC(val,beg,end) \ 97#define IN_RANGE_INC(val,beg,end) \
44 ((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))
45 99
… …
52 void *operator new (size_t s); 106 void *operator new (size_t s);
53 void operator delete (void *p, size_t s); 107 void operator delete (void *p, size_t s);
54}; 108};
55 109
56/* simplevec taken (and heavily modified), from: 110/* simplevec taken (and heavily modified), from:
57 * 111 *
58 * MICO --- a free CORBA implementation 112 * MICO --- a free CORBA implementation
59 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 113 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
60 */ 114 */
61template<class T> 115template<class T>
62struct simplevec { 116struct simplevec {
… …
308} 362}
309 363
310 364
311template<typename T> 365template<typename T>
312struct vector : simplevec<T> 366struct vector : simplevec<T>
313{ }; 367{
368};
369
370struct stringvec : simplevec<char *>
371{
372 ~stringvec ()
373 {
374 for (char **c = begin (); c != end (); c++)
375 free (*c);
376 }
377};
314 378
315#if 0 379#if 0
316template<typename T> 380template<typename T>
317struct rxvt_vec : simplevec<void *> { 381struct rxvt_vec : simplevec<void *> {
318 typedef T *iterator; 382 typedef T *iterator;
… …
326 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); } 390 T &operator [] (int i) { return * (T *) (& ((* (simplevec<void *> *)this)[i])); }
327 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])); }
328}; 392};
329#endif 393#endif
330 394
331template <typename I, typename T>
332I find (I first, I last, const T& value)
333{
334 while (first != last && *first != value)
335 ++first;
336
337 return first;
338}
339
340template<typename T> 395template<typename T>
341struct auto_ptr { 396struct auto_ptr {
342 T *p; 397 T *p;
343 398
344 auto_ptr () : p (0) { } 399 auto_ptr () : p (0) { }
… …
395 } 450 }
396}; 451};
397 452
398typedef auto_ptr<char> auto_str; 453typedef auto_ptr<char> auto_str;
399 454
400struct stringvec : simplevec<char *>
401{
402 ~stringvec ()
403 {
404 for (char **c = begin (); c != end (); c++)
405 free (*c);
406 }
407};
408
409// return a very temporary (and never deallocated) buffer. keep small.
410void *rxvt_temp_buf (int len);
411
412template<typename T>
413inline T *
414rxvt_temp_buf (int len)
415{
416 return (T *)rxvt_temp_buf (len * sizeof (T));
417}
418
419#endif 455#endif
420 456

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