| 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 | |
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7 | using namespace std; |
| 6 | |
8 | |
| 7 | #define PP_CONCAT_(a, b) a ## b |
9 | #define PP_CONCAT_(a, b) a ## b |
| 8 | #define PP_CONCAT(a, b) PP_CONCAT_(a, b) |
10 | #define PP_CONCAT(a, b) PP_CONCAT_(a, b) |
| 9 | #define PP_STRINGIFY_(a) #a |
11 | #define PP_STRINGIFY_(a) #a |
| 10 | #define PP_STRINGIFY(a) PP_STRINGIFY_(a) |
12 | #define PP_STRINGIFY(a) PP_STRINGIFY_(a) |
| 11 | |
13 | |
| 12 | // actually, some gcc-3.x versions work, too |
14 | #define HAVE_GCC_BUILTINS (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ == 4)) |
| 13 | #define HAVE_GCC_BUILTINS (__GNUC__ >= 4) |
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| 14 | |
15 | |
| 15 | #ifndef __attribute__ |
16 | #ifndef __attribute__ |
| 16 | # if __GNUC__ |
17 | # if __GNUC__ |
| 17 | # if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2) |
18 | # if (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || (__GNUC__ < 2) |
| 18 | # define __attribute__(x) |
19 | # define __attribute__(x) |
| … | |
… | |
| 61 | // linear interpolation |
62 | // linear interpolation |
| 62 | template<typename T, typename U, typename P> |
63 | template<typename T, typename U, typename P> |
| 63 | static inline |
64 | static inline |
| 64 | T lerp (T a, U b, P p) |
65 | T lerp (T a, U b, P p) |
| 65 | { |
66 | { |
| 66 | return (int(a) * int(p) + int(b) * int(100 - p)) / 100; |
67 | return (long(a) * long(100 - p) + long(b) * long(p) + 50) / 100; |
| 67 | } |
68 | } |
| 68 | |
69 | |
| 69 | // some bit functions, xft fuck me plenty |
70 | // some bit functions, xft fuck me plenty |
| 70 | #if HAVE_GCC_BUILTINS |
71 | #if HAVE_GCC_BUILTINS |
| 71 | static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } |
72 | static inline int ctz (unsigned int x) CONST { return __builtin_ctz (x); } |
