ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/rxvt-unicode/src/rxvtutil.h
(Generate patch)

Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.21 by root, Sun Jan 29 20:51:28 2006 UTC vs.
Revision 1.26 by root, Tue Jan 31 16:57:35 2006 UTC

… …
6 6
7#define PP_CONCAT_(a, b) a ## b 7#define PP_CONCAT_(a, b) a ## b
8#define PP_CONCAT(a, b) PP_CONCAT_(a, b) 8#define PP_CONCAT(a, b) PP_CONCAT_(a, b)
9#define PP_STRINGIFY_(a) #a 9#define PP_STRINGIFY_(a) #a
10#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)
14
15#ifndef __attribute__
16# if __GNUC__
17# if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2)
18# define __attribute__(x)
19# endif
20# endif
21# define __attribute__(x)
22#endif
23
24#define NORETURN __attribute__ ((noreturn))
25#define UNUSED __attribute__ ((unused))
26#define CONST __attribute__ ((const))
27
28// increases code size unless -fno-enforce-eh-specs
29#if __GNUC__
30# define NOTHROW
31# define THROW(x)
32#else
33# define NOTHROW throw()
34# define THROW(x) throw x
35#endif
11 36
12extern class byteorder { 37extern class byteorder {
13 static unsigned int e; // at least 32 bits 38 static unsigned int e; // at least 32 bits
14public: 39public:
15 byteorder (); 40 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; } 54template<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; } 55template<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 56
32template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } 57template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
33 58
59template<typename T> static inline T squared_diff (T a, T b) { return (a-b)*(a-b); }
60
34// linear interpolation 61// linear interpolation
35template<typename T, typename U, typename P> 62template<typename T, typename U, typename P>
36static inline 63static inline
37T lerp (T a, U b, P p) 64T lerp (T a, U b, P p)
38{ 65{
39 return (int(a) * int(p) + int(b) * int(100 - p)) / 100; 66 return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
40} 67}
68
69// some bit functions, xft fuck me plenty
70#if HAVE_GCC_BUILTINS
71static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); }
72static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); }
73#else
74// count trailing zero bits and count # of one bits
75int ctz (unsigned int x) CONST;
76int popcount (unsigned int x) CONST;
77#endif
41 78
42// in range including end 79// in range including end
43#define IN_RANGE_INC(val,beg,end) \ 80#define IN_RANGE_INC(val,beg,end) \
44 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) 81 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))
45 82
… …
408 445
409// return a very temporary (and never deallocated) buffer. keep small. 446// return a very temporary (and never deallocated) buffer. keep small.
410void *rxvt_temp_buf (int len); 447void *rxvt_temp_buf (int len);
411 448
412template<typename T> 449template<typename T>
413inline T * 450static inline T *
414rxvt_temp_buf (int len) 451rxvt_temp_buf (int len)
415{ 452{
416 return (T *)rxvt_temp_buf (len * sizeof (T)); 453 return (T *)rxvt_temp_buf (len * sizeof (T));
417} 454}
418 455

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines