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| 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) |
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11 | |
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12 | // actually, some gcc-3.x versions work, too |
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13 | #define HAVE_GCC_BUILTINS (__GNUC__ >= 4) |
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14 | |
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15 | #ifndef __attribute__ |
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16 | # if __GNUC__ |
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17 | # if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2) |
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18 | # define __attribute__(x) |
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19 | # endif |
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20 | # endif |
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21 | # define __attribute__(x) |
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22 | #endif |
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23 | |
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24 | #define NORETURN __attribute__ ((noreturn)) |
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25 | #define UNUSED __attribute__ ((unused)) |
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26 | #define CONST __attribute__ ((const)) |
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27 | |
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28 | // increases code size unless -fno-enforce-eh-specs |
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29 | #if __GNUC__ |
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30 | # define NOTHROW |
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31 | # define THROW(x) |
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32 | #else |
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33 | # define NOTHROW throw() |
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34 | # define THROW(x) throw x |
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35 | #endif |
| 11 | |
36 | |
| 12 | extern class byteorder { |
37 | extern class byteorder { |
| 13 | static unsigned int e; // at least 32 bits |
38 | static unsigned int e; // at least 32 bits |
| 14 | public: |
39 | public: |
| 15 | byteorder (); |
40 | byteorder (); |
| … | |
… | |
| 36 | static inline |
61 | static inline |
| 37 | T lerp (T a, U b, P p) |
62 | T lerp (T a, U b, P p) |
| 38 | { |
63 | { |
| 39 | return (int(a) * int(p) + int(b) * int(100 - p)) / 100; |
64 | return (int(a) * int(p) + int(b) * int(100 - p)) / 100; |
| 40 | } |
65 | } |
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66 | |
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67 | // some bit functions, xft fuck me plenty |
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68 | #if HAVE_GCC_BUILTINS |
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69 | static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } |
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70 | static inline int popcount (unsigned int x) CONST { return __builtin_popcount (x); } |
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71 | #else |
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72 | // count trailing zero bits and count # of one bits |
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73 | int ctz (unsigned int x) CONST; |
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74 | int popcount (unsigned int x) CONST; |
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75 | #endif |
| 41 | |
76 | |
| 42 | // in range including end |
77 | // in range including end |
| 43 | #define IN_RANGE_INC(val,beg,end) \ |
78 | #define IN_RANGE_INC(val,beg,end) \ |
| 44 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
79 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
| 45 | |
80 | |
| … | |
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| 408 | |
443 | |
| 409 | // return a very temporary (and never deallocated) buffer. keep small. |
444 | // return a very temporary (and never deallocated) buffer. keep small. |
| 410 | void *rxvt_temp_buf (int len); |
445 | void *rxvt_temp_buf (int len); |
| 411 | |
446 | |
| 412 | template<typename T> |
447 | template<typename T> |
| 413 | inline T * |
448 | static inline T * |
| 414 | rxvt_temp_buf (int len) |
449 | rxvt_temp_buf (int len) |
| 415 | { |
450 | { |
| 416 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
451 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
| 417 | } |
452 | } |
| 418 | |
453 | |
