| 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 | #include <inttypes.h> |
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7 | #include "ecb.h" |
| 6 | |
8 | |
| 7 | using namespace std; |
9 | using namespace std; |
| 8 | |
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| 9 | #define ARRAY_LENGTH(v) (sizeof (v) / sizeof ((v)[0])) |
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| 10 | |
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| 11 | #define PP_CONCAT_(a, b) a ## b |
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| 12 | #define PP_CONCAT(a, b) PP_CONCAT_(a, b) |
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| 13 | #define PP_STRINGIFY_(a) #a |
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| 14 | #define PP_STRINGIFY(a) PP_STRINGIFY_(a) |
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| 15 | |
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| 16 | #define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4)) |
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| 17 | |
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| 18 | #if __GNUC__ >= 4 |
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| 19 | # define rxvt_attribute(x) __attribute__(x) |
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| 20 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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| 21 | #else |
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| 22 | # define rxvt_attribute(x) |
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| 23 | # define expect(expr,value) (expr) |
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| 24 | #endif |
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| 25 | |
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| 26 | // put into ifs if you are very sure that the expression |
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| 27 | // is mostly true or mostly false. note that these return |
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| 28 | // booleans, not the expression. |
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| 29 | #define expect_false(expr) expect ((expr) != 0, 0) |
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| 30 | #define expect_true(expr) expect ((expr) != 0, 1) |
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| 31 | |
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| 32 | #define NORETURN rxvt_attribute ((noreturn)) |
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| 33 | #define UNUSED rxvt_attribute ((unused)) |
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| 34 | #define CONST rxvt_attribute ((const)) |
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| 35 | |
10 | |
| 36 | // increases code size unless -fno-enforce-eh-specs |
11 | // increases code size unless -fno-enforce-eh-specs |
| 37 | #if __GNUC__ |
12 | #if __GNUC__ |
| 38 | # define NOTHROW |
13 | # define NOTHROW |
| 39 | # define THROW(x) |
14 | # define THROW(x) |
| 40 | #else |
15 | #else |
| 41 | # define NOTHROW throw() |
16 | # define NOTHROW throw() |
| 42 | # define THROW(x) throw x |
17 | # define THROW(x) throw x |
| 43 | #endif |
18 | #endif |
| 44 | |
19 | |
| 45 | extern class byteorder { |
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| 46 | static unsigned int e; // at least 32 bits |
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| 47 | public: |
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| 48 | byteorder (); |
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| 49 | |
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| 50 | static bool big_endian () { return e == 0x11223344; }; |
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| 51 | static bool network () { return e == 0x11223344; }; |
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| 52 | static bool little_endian () { return e == 0x44332211; }; |
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| 53 | static bool vax () { return e == 0x44332211; }; |
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| 54 | } byteorder; |
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| 55 | |
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| 56 | // various utility functions |
20 | // various utility functions |
| 57 | template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } |
21 | template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } |
| 58 | template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; } |
22 | template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; } |
| 59 | template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } |
23 | template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } |
| 60 | template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; } |
24 | template<typename T, typename U> static inline void max_it (T &a, U b) { a = a > (T)b ? a : (T)b; } |
| … | |
… | |
| 90 | static inline T * |
54 | static inline T * |
| 91 | rxvt_temp_buf (int len) |
55 | rxvt_temp_buf (int len) |
| 92 | { |
56 | { |
| 93 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
57 | return (T *)rxvt_temp_buf (len * sizeof (T)); |
| 94 | } |
58 | } |
| 95 | |
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| 96 | // some bit functions, xft fuck me plenty |
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| 97 | #if HAVE_GCC_BUILTINS |
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| 98 | /* netbsd stupidly defines popcount itself and puts it into string.h */ |
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| 99 | static inline int rxvt_ctz (unsigned int x) { return __builtin_ctz (x); } |
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| 100 | static inline int rxvt_popcount (unsigned int x) { return __builtin_popcount (x); } |
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| 101 | #else |
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| 102 | // count trailing zero bits and count # of one bits |
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| 103 | int rxvt_ctz (unsigned int x) CONST; |
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| 104 | int rxvt_popcount (unsigned int x) CONST; |
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| 105 | #endif |
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| 106 | |
59 | |
| 107 | // in range including end |
60 | // in range including end |
| 108 | #define IN_RANGE_INC(val,beg,end) \ |
61 | #define IN_RANGE_INC(val,beg,end) \ |
| 109 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
62 | ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) |
| 110 | |
63 | |
