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/cvs/rxvt-unicode/src/rxvtutil.h
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Comparing rxvt-unicode/src/rxvtutil.h (file contents):
Revision 1.38 by root, Wed Nov 5 14:43:54 2008 UTC vs.
Revision 1.42 by root, Mon Jan 3 03:05:47 2011 UTC

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>
6#include <inttypes.h>
6 7
7using namespace std; 8using namespace std;
9
10#define ARRAY_LENGTH(v) (sizeof (v) / sizeof ((v)[0]))
8 11
9#define PP_CONCAT_(a, b) a ## b 12#define PP_CONCAT_(a, b) a ## b
10#define PP_CONCAT(a, b) PP_CONCAT_(a, b) 13#define PP_CONCAT(a, b) PP_CONCAT_(a, b)
11#define PP_STRINGIFY_(a) #a 14#define PP_STRINGIFY_(a) #a
12#define PP_STRINGIFY(a) PP_STRINGIFY_(a) 15#define PP_STRINGIFY(a) PP_STRINGIFY_(a)
… …
20# define rxvt_attribute(x) 23# define rxvt_attribute(x)
21# define expect(expr,value) (expr) 24# define expect(expr,value) (expr)
22#endif 25#endif
23 26
24// put into ifs if you are very sure that the expression 27// put into ifs if you are very sure that the expression
25// is mostly true or mosty false. note that these return 28// is mostly true or mostly false. note that these return
26// booleans, not the expression. 29// booleans, not the expression.
27#define expect_false(expr) expect ((expr) != 0, 0) 30#define expect_false(expr) expect ((expr) != 0, 0)
28#define expect_true(expr) expect ((expr) != 0, 1) 31#define expect_true(expr) expect ((expr) != 0, 1)
29 32
30#define NORETURN rxvt_attribute ((noreturn)) 33#define NORETURN rxvt_attribute ((noreturn))
… …
38#else 41#else
39# define NOTHROW throw() 42# define NOTHROW throw()
40# define THROW(x) throw x 43# define THROW(x) throw x
41#endif 44#endif
42 45
43extern class byteorder { 46namespace byteorder {
44 static unsigned int e; // at least 32 bits 47 static uint32_t e ()
45public: 48 {
46 byteorder (); 49 char c [4] = { 0x11, 0x22, 0x33, 0x44 };
50 return *(uint32_t *)c;
51 }
47 52
48 static bool big_endian () { return e == 0x11223344; }; 53 static bool big_endian () { return e () == 0x11223344; };
49 static bool network () { return e == 0x11223344; }; 54 static bool network () { return big_endian (); };
50 static bool little_endian () { return e == 0x44332211; }; 55 static bool little_endian () { return e () == 0x44332211; };
51 static bool vax () { return e == 0x44332211; }; 56 static bool vax () { return little_endian (); };
52} byteorder; 57};
53 58
54// various utility functions 59// various utility functions
55template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; } 60template<typename T, typename U> static inline T min (T a, U b) { return a < (T)b ? a : (T)b; }
56template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; } 61template<typename T, typename U> static inline void min_it (T &a, U b) { a = a < (T)b ? a : (T)b; }
57template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } 62template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; }
… …
91 return (T *)rxvt_temp_buf (len * sizeof (T)); 96 return (T *)rxvt_temp_buf (len * sizeof (T));
92} 97}
93 98
94// some bit functions, xft fuck me plenty 99// some bit functions, xft fuck me plenty
95#if HAVE_GCC_BUILTINS 100#if HAVE_GCC_BUILTINS
101/* netbsd stupidly defines popcount itself and puts it into string.h */
96static inline int ctz (unsigned int x) { return __builtin_ctz (x); } 102static inline int rxvt_ctz (unsigned int x) { return __builtin_ctz (x); }
97static inline int popcount (unsigned int x) { return __builtin_popcount (x); } 103static inline int rxvt_popcount (unsigned int x) { return __builtin_popcount (x); }
98#else 104#else
99// count trailing zero bits and count # of one bits 105// count trailing zero bits and count # of one bits
100int ctz (unsigned int x) CONST; 106int rxvt_ctz (unsigned int x) CONST;
101int popcount (unsigned int x) CONST; 107int rxvt_popcount (unsigned int x) CONST;
102#endif 108#endif
103 109
104// in range including end 110// in range including end
105#define IN_RANGE_INC(val,beg,end) \ 111#define IN_RANGE_INC(val,beg,end) \
106 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg)) 112 ((unsigned int)(val) - (unsigned int)(beg) <= (unsigned int)(end) - (unsigned int)(beg))

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