| 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 | // actually, some gcc-3.x versions work, too |
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15 | #define HAVE_GCC_BUILTINS (__GNUC__ >= 4) |
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16 | |
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17 | #ifndef __attribute__ |
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18 | # if __GNUC__ |
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19 | # if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2) |
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20 | # define __attribute__(x) |
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21 | # endif |
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22 | # endif |
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23 | # define __attribute__(x) |
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24 | #endif |
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25 | |
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26 | #define NORETURN __attribute__ ((noreturn)) |
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27 | #define UNUSED __attribute__ ((unused)) |
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28 | #define CONST __attribute__ ((const)) |
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29 | |
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30 | // increases code size unless -fno-enforce-eh-specs |
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31 | #if __GNUC__ |
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32 | # define NOTHROW |
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33 | # define THROW(x) |
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34 | #else |
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35 | # define NOTHROW throw() |
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36 | # define THROW(x) throw x |
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37 | #endif |
| 10 | |
38 | |
| 11 | extern class byteorder { |
39 | extern class byteorder { |
| 12 | static unsigned int e; // at least 32 bits |
40 | static unsigned int e; // at least 32 bits |
| 13 | public: |
41 | public: |
| 14 | byteorder (); |
42 | byteorder (); |
| … | |
… | |
| 27 | |
55 | |
| 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; } |
56 | 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; } |
57 | 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 | |
58 | |
| 31 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
59 | template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } |
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60 | |
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61 | template<typename T> static inline T squared_diff (T a, T b) { return (a-b)*(a-b); } |
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62 | |
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63 | // linear interpolation |
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64 | template<typename T, typename U, typename P> |
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65 | static inline |
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66 | T lerp (T a, U b, P p) |
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67 | { |
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68 | return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; |
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69 | } |
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70 | |
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71 | // some bit functions, xft fuck me plenty |
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72 | #if HAVE_GCC_BUILTINS |
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73 | static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } |
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74 | static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); } |
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75 | #else |
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76 | // count trailing zero bits and count # of one bits |
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77 | int ctz (unsigned int x) CONST; |
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78 | int popcount (unsigned int x) CONST; |
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79 | #endif |
| 32 | |
80 | |
| 33 | // in range including end |
81 | // in range including end |
| 34 | #define IN_RANGE_INC(val,beg,end) \ |
82 | #define IN_RANGE_INC(val,beg,end) \ |
| 35 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
83 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
| 36 | |
84 | |
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| 391 | struct stringvec : simplevec<char *> |
439 | struct stringvec : simplevec<char *> |
| 392 | { |
440 | { |
| 393 | ~stringvec () |
441 | ~stringvec () |
| 394 | { |
442 | { |
| 395 | for (char **c = begin (); c != end (); c++) |
443 | for (char **c = begin (); c != end (); c++) |
| 396 | delete [] *c; |
444 | free (*c); |
| 397 | } |
445 | } |
| 398 | }; |
446 | }; |
| 399 | |
447 | |
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448 | // return a very temporary (and never deallocated) buffer. keep small. |
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449 | void *rxvt_temp_buf (int len); |
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450 | |
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451 | template<typename T> |
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452 | static inline T * |
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453 | rxvt_temp_buf (int len) |
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454 | { |
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455 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
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456 | } |
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457 | |
| 400 | #endif |
458 | #endif |
| 401 | |
459 | |
