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/cvs/rxvt-unicode/src/rxvtutil.h
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Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.18 by root, Tue Jan 17 16:06:48 2006 UTC vs.
Revision 1.23 by root, Sun Jan 29 22:30:21 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)
10 14
11extern class byteorder { 15extern class byteorder {
12 static unsigned int e; // at least 32 bits 16 static unsigned int e; // at least 32 bits
13public: 17public:
14 byteorder (); 18 byteorder ();
… …
27 31
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; } 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; }
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; } 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; }
30 34
31template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } 35template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
36
37// linear interpolation
38template<typename T, typename U, typename P>
39static inline
40T lerp (T a, U b, P p)
41{
42 return (int(a) * int(p) + int(b) * int(100 - p)) / 100;
43}
44
45// some bit functions, xft fuck me plenty
46#if HAVE_GCC_BUILTINS
47static inline int ctz (unsigned int x) { return __builtin_ctz (x); }
48static inline int popcount (unsigned int x) { return __builtin_popcount (x); }
49#else
50// count trailing zero bits and count # of one bits
51int ctz (unsigned int x);
52int popcount (unsigned int x);
53#endif
32 54
33// in range including end 55// in range including end
34#define IN_RANGE_INC(val,beg,end) \ 56#define IN_RANGE_INC(val,beg,end) \
35 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) 57 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
36 58
… …
391struct stringvec : simplevec<char *> 413struct stringvec : simplevec<char *>
392{ 414{
393 ~stringvec () 415 ~stringvec ()
394 { 416 {
395 for (char **c = begin (); c != end (); c++) 417 for (char **c = begin (); c != end (); c++)
396 delete [] *c; 418 free (*c);
397 } 419 }
398}; 420};
399 421
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
400#endif 432#endif
401 433

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