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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 1.26 by root, Tue Jan 31 16:57:35 2006 UTC

… …
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 11
12// actually, some gcc-3.x versions work, too 12// actually, some gcc-3.x versions work, too
13#define HAVE_GCC_BUILTINS (__GNUC__ >= 4) 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
14 36
15extern class byteorder { 37extern class byteorder {
16 static unsigned int e; // at least 32 bits 38 static unsigned int e; // at least 32 bits
17public: 39public:
18 byteorder (); 40 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; } 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; }
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; } 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; }
34 56
35template<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; }
36 58
59template<typename T> static inline T squared_diff (T a, T b) { return (a-b)*(a-b); }
60
37// linear interpolation 61// linear interpolation
38template<typename T, typename U, typename P> 62template<typename T, typename U, typename P>
39static inline 63static inline
40T lerp (T a, U b, P p) 64T lerp (T a, U b, P p)
41{ 65{
42 return (int(a) * int(p) + int(b) * int(100 - p)) / 100; 66 return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100;
43} 67}
44 68
45// some bit functions, xft fuck me plenty 69// some bit functions, xft fuck me plenty
46#if HAVE_GCC_BUILTINS 70#if HAVE_GCC_BUILTINS
47static inline int ctz (unsigned int x) { return __builtin_ctz (x); } 71static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); }
48static inline int popcount (unsigned int x) { return __builtin_popcount (x); } 72static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); }
49#else 73#else
50// count trailing zero bits and count # of one bits 74// count trailing zero bits and count # of one bits
51int ctz (unsigned int x); 75int ctz (unsigned int x) CONST;
52int popcount (unsigned int x); 76int popcount (unsigned int x) CONST;
53#endif 77#endif
54 78
55// in range including end 79// in range including end
56#define IN_RANGE_INC(val,beg,end) \ 80#define IN_RANGE_INC(val,beg,end) \
57 ((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))
… …
421 445
422// return a very temporary (and never deallocated) buffer. keep small. 446// return a very temporary (and never deallocated) buffer. keep small.
423void *rxvt_temp_buf (int len); 447void *rxvt_temp_buf (int len);
424 448
425template<typename T> 449template<typename T>
426inline T * 450static inline T *
427rxvt_temp_buf (int len) 451rxvt_temp_buf (int len)
428{ 452{
429 return (T *)rxvt_temp_buf (len * sizeof (T)); 453 return (T *)rxvt_temp_buf (len * sizeof (T));
430} 454}
431 455

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