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> |
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6 | |
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7 | using 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) |
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14 | |
15 | |
15 | #ifndef __attribute__ |
16 | #ifndef __attribute__ |
16 | # if __GNUC__ |
17 | # if __GNUC__ |
17 | # if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2) |
18 | # if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2) |
18 | # define __attribute__(x) |
19 | # define __attribute__(x) |
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54 | template<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; } |
55 | template<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; } |
55 | template<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; } |
56 | template<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; } |
56 | |
57 | |
57 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
58 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
58 | |
59 | |
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60 | template<typename T> static inline T squared_diff (T a, T b) { return (a-b)*(a-b); } |
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61 | |
59 | // linear interpolation |
62 | // linear interpolation |
60 | template<typename T, typename U, typename P> |
63 | template<typename T, typename U, typename P> |
61 | static inline |
64 | static inline |
62 | T lerp (T a, U b, P p) |
65 | T lerp (T a, U b, P p) |
63 | { |
66 | { |
64 | return (int(a) * int(p) + int(b) * int(100 - p)) / 100; |
67 | return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; |
65 | } |
68 | } |
66 | |
69 | |
67 | // some bit functions, xft fuck me plenty |
70 | // some bit functions, xft fuck me plenty |
68 | #if HAVE_GCC_BUILTINS |
71 | #if HAVE_GCC_BUILTINS |
69 | static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } |
72 | static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } |
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87 | void *operator new (size_t s); |
90 | void *operator new (size_t s); |
88 | void operator delete (void *p, size_t s); |
91 | void operator delete (void *p, size_t s); |
89 | }; |
92 | }; |
90 | |
93 | |
91 | /* simplevec taken (and heavily modified), from: |
94 | /* simplevec taken (and heavily modified), from: |
92 | * |
95 | * |
93 | * MICO --- a free CORBA implementation |
96 | * MICO --- a free CORBA implementation |
94 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
97 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
95 | */ |
98 | */ |
96 | template<class T> |
99 | template<class T> |
97 | struct simplevec { |
100 | struct simplevec { |