91 static inline int do_clamp(int index, unsigned max)  in do_clamp()  argument
96     if (index > (int)max)  in do_clamp()
97         index = max;  in do_clamp()
98     if (index < 0)  in do_clamp()
99         index = 0;  in do_clamp()
101     if ((unsigned)index > max)  in do_clamp()
103         if (index < 0)  in do_clamp()
104             index = 0;  in do_clamp()
106             index = max;  in do_clamp()
109     return index;  in do_clamp()
112 static inline int do_repeat_mod(int index, unsigned max)  in do_repeat_mod()  argument
116     if ((unsigned)index > max)  in do_repeat_mod()
118         if (index < 0)  in do_repeat_mod()
119             index = max - (~index % (max + 1));  in do_repeat_mod()
121             index = index % (max + 1);  in do_repeat_mod()
123     return index;  in do_repeat_mod()
126 static inline int do_repeat_pow2(int index, unsigned max)  in do_repeat_pow2()  argument
130     return index & max;  in do_repeat_pow2()
133 static inline int do_mirror_mod(int index, unsigned max)  in do_mirror_mod()  argument
140     index ^= index >> 31;  in do_mirror_mod()
142     if ((unsigned)index > max)  in do_mirror_mod()
145         index = index % mod;  in do_mirror_mod()
146         if ((unsigned)index > max)  in do_mirror_mod()
147             index = mod - index - 1;  in do_mirror_mod()
149     return index;  in do_mirror_mod()
152 static inline int do_mirror_pow2(int index, unsigned max)  in do_mirror_pow2()  argument
156     int s = (index & (max + 1)) - 1;  in do_mirror_pow2()
159     return (index ^ s) & max;  in do_mirror_pow2()