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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 1.30 by root, Tue Nov 20 17:44:44 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__ >= 3
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
67// some bit functions, xft fuck me plenty
68#if HAVE_GCC_BUILTINS
69static inline int ctz (unsigned int x) { return __builtin_ctz (x); }
70static inline int popcount (unsigned int x) { return __builtin_popcount (x); }
71#else
72// count trailing zero bits and count # of one bits
73int ctz (unsigned int x) CONST;
74int popcount (unsigned int x) CONST;
75#endif
41 76
42// in range including end 77// in range including end
43#define IN_RANGE_INC(val,beg,end) \ 78#define IN_RANGE_INC(val,beg,end) \
44 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) 79 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
45 80
… …
52 void *operator new (size_t s); 87 void *operator new (size_t s);
53 void operator delete (void *p, size_t s); 88 void operator delete (void *p, size_t s);
54}; 89};
55 90
56/* simplevec taken (and heavily modified), from: 91/* simplevec taken (and heavily modified), from:
57 * 92 *
58 * MICO --- a free CORBA implementation 93 * MICO --- a free CORBA implementation
59 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 94 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
60 */ 95 */
61template<class T> 96template<class T>
62struct simplevec { 97struct simplevec {
… …
408 443
409// return a very temporary (and never deallocated) buffer. keep small. 444// return a very temporary (and never deallocated) buffer. keep small.
410void *rxvt_temp_buf (int len); 445void *rxvt_temp_buf (int len);
411 446
412template<typename T> 447template<typename T>
413inline T * 448static inline T *
414rxvt_temp_buf (int len) 449rxvt_temp_buf (int len)
415{ 450{
416 return (T *)rxvt_temp_buf (len * sizeof (T)); 451 return (T *)rxvt_temp_buf (len * sizeof (T));
417} 452}
418 453

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