| 1 | #ifndef RXVT_UTIL_H |
1 | #ifndef RXVT_UTIL_H |
| 2 | #define RXVT_UTIL_H |
2 | #define RXVT_UTIL_H |
| 3 | |
3 | |
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4 | #include <cstdlib> |
| 4 | #include <cstring> |
5 | #include <cstring> |
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6 | |
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7 | using namespace std; |
| 5 | |
8 | |
| 6 | #define PP_CONCAT_(a, b) a ## b |
9 | #define PP_CONCAT_(a, b) a ## b |
| 7 | #define PP_CONCAT(a, b) PP_CONCAT_(a, b) |
10 | #define PP_CONCAT(a, b) PP_CONCAT_(a, b) |
| 8 | #define PP_STRINGIFY_(a) #a |
11 | #define PP_STRINGIFY_(a) #a |
| 9 | #define PP_STRINGIFY(a) PP_STRINGIFY_(a) |
12 | #define PP_STRINGIFY(a) PP_STRINGIFY_(a) |
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13 | |
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14 | #define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4)) |
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15 | |
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16 | #ifndef __attribute__ |
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17 | # if __GNUC__ |
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18 | # if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2) |
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19 | # define __attribute__(x) |
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20 | # endif |
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21 | # endif |
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22 | # define __attribute__(x) |
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23 | #endif |
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24 | |
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25 | #define NORETURN __attribute__ ((noreturn)) |
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26 | #define UNUSED __attribute__ ((unused)) |
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27 | #define CONST __attribute__ ((const)) |
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28 | |
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29 | // increases code size unless -fno-enforce-eh-specs |
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30 | #if __GNUC__ |
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31 | # define NOTHROW |
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32 | # define THROW(x) |
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33 | #else |
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34 | # define NOTHROW throw() |
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35 | # define THROW(x) throw x |
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36 | #endif |
| 10 | |
37 | |
| 11 | extern class byteorder { |
38 | extern class byteorder { |
| 12 | static unsigned int e; // at least 32 bits |
39 | static unsigned int e; // at least 32 bits |
| 13 | public: |
40 | public: |
| 14 | byteorder (); |
41 | byteorder (); |
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| 28 | 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; } |
| 29 | 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; } |
| 30 | |
57 | |
| 31 | 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; } |
| 32 | |
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 | |
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62 | // linear interpolation |
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63 | template<typename T, typename U, typename P> |
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64 | static inline |
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65 | T lerp (T a, U b, P p) |
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66 | { |
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67 | return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; |
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68 | } |
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69 | |
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70 | // some bit functions, xft fuck me plenty |
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71 | #if HAVE_GCC_BUILTINS |
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72 | static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } |
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73 | static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); } |
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74 | #else |
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75 | // count trailing zero bits and count # of one bits |
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76 | int ctz (unsigned int x) CONST; |
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77 | int popcount (unsigned int x) CONST; |
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78 | #endif |
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79 | |
| 33 | // in range including end |
80 | // in range including end |
| 34 | #define IN_RANGE_INC(val,beg,end) \ |
81 | #define IN_RANGE_INC(val,beg,end) \ |
| 35 | ((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)) |
| 36 | |
83 | |
| 37 | // in range excluding end |
84 | // in range excluding end |
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| 43 | void *operator new (size_t s); |
90 | void *operator new (size_t s); |
| 44 | void operator delete (void *p, size_t s); |
91 | void operator delete (void *p, size_t s); |
| 45 | }; |
92 | }; |
| 46 | |
93 | |
| 47 | /* simplevec taken (and heavily modified), from: |
94 | /* simplevec taken (and heavily modified), from: |
| 48 | * |
95 | * |
| 49 | * MICO --- a free CORBA implementation |
96 | * MICO --- a free CORBA implementation |
| 50 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
97 | * Copyright (C) 1997-98 Kay Roemer & Arno Puder |
| 51 | */ |
98 | */ |
| 52 | template<class T> |
99 | template<class T> |
| 53 | struct simplevec { |
100 | struct simplevec { |
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| 391 | struct stringvec : simplevec<char *> |
438 | struct stringvec : simplevec<char *> |
| 392 | { |
439 | { |
| 393 | ~stringvec () |
440 | ~stringvec () |
| 394 | { |
441 | { |
| 395 | for (char **c = begin (); c != end (); c++) |
442 | for (char **c = begin (); c != end (); c++) |
| 396 | delete [] *c; |
443 | free (*c); |
| 397 | } |
444 | } |
| 398 | }; |
445 | }; |
| 399 | |
446 | |
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447 | // return a very temporary (and never deallocated) buffer. keep small. |
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448 | void *rxvt_temp_buf (int len); |
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449 | |
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450 | template<typename T> |
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451 | static inline T * |
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452 | rxvt_temp_buf (int len) |
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453 | { |
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454 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
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455 | } |
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456 | |
| 400 | #endif |
457 | #endif |
| 401 | |
458 | |
