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/cvs/rxvt-unicode/src/rxvtutil.h
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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 1.29 by ayin, Wed Oct 31 09:55:24 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#ifndef __attribute__
17# if __GNUC__
18# if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2)
19# define __attribute__(x)
20# endif
21# endif
22# define __attribute__(x)
23#endif
24
25#define NORETURN __attribute__ ((noreturn))
26#define UNUSED __attribute__ ((unused))
27#define CONST __attribute__ ((const))
28
29// increases code size unless -fno-enforce-eh-specs
30#if __GNUC__
31# define NOTHROW
32# define THROW(x)
33#else
34# define NOTHROW throw()
35# define THROW(x) throw x
36#endif
14 37
15extern class byteorder { 38extern class byteorder {
16 static unsigned int e; // at least 32 bits 39 static unsigned int e; // at least 32 bits
17public: 40public:
18 byteorder (); 41 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; } 55template<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; } 56template<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 57
35template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } 58template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
36 59
60template<typename T> static inline T squared_diff (T a, T b) { return (a-b)*(a-b); }
61
37// linear interpolation 62// linear interpolation
38template<typename T, typename U, typename P> 63template<typename T, typename U, typename P>
39static inline 64static inline
40T lerp (T a, U b, P p) 65T lerp (T a, U b, P p)
41{ 66{
42 return (int(a) * int(p) + int(b) * int(100 - p)) / 100; 67 return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
43} 68}
44 69
45// some bit functions, xft fuck me plenty 70// some bit functions, xft fuck me plenty
46#if HAVE_GCC_BUILTINS 71#if HAVE_GCC_BUILTINS
47static inline int ctz (unsigned int x) { return __builtin_ctz (x); } 72static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); }
48static inline int popcount (unsigned int x) { return __builtin_popcount (x); } 73static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); }
49#else 74#else
50// count trailing zero bits and count # of one bits 75// count trailing zero bits and count # of one bits
51int ctz (unsigned int x); 76int ctz (unsigned int x) CONST;
52int popcount (unsigned int x); 77int popcount (unsigned int x) CONST;
53#endif 78#endif
54 79
55// in range including end 80// in range including end
56#define IN_RANGE_INC(val,beg,end) \ 81#define IN_RANGE_INC(val,beg,end) \
57 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) 82 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
… …
65 void *operator new (size_t s); 90 void *operator new (size_t s);
66 void operator delete (void *p, size_t s); 91 void operator delete (void *p, size_t s);
67}; 92};
68 93
69/* simplevec taken (and heavily modified), from: 94/* simplevec taken (and heavily modified), from:
70 * 95 *
71 * MICO --- a free CORBA implementation 96 * MICO --- a free CORBA implementation
72 * Copyright (C) 1997-98 Kay Roemer & Arno Puder 97 * Copyright (C) 1997-98 Kay Roemer & Arno Puder
73 */ 98 */
74template<class T> 99template<class T>
75struct simplevec { 100struct simplevec {
… …
421 446
422// return a very temporary (and never deallocated) buffer. keep small. 447// return a very temporary (and never deallocated) buffer. keep small.
423void *rxvt_temp_buf (int len); 448void *rxvt_temp_buf (int len);
424 449
425template<typename T> 450template<typename T>
426inline T * 451static inline T *
427rxvt_temp_buf (int len) 452rxvt_temp_buf (int len)
428{ 453{
429 return (T *)rxvt_temp_buf (len * sizeof (T)); 454 return (T *)rxvt_temp_buf (len * sizeof (T));
430} 455}
431 456

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