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定义： #define_INTSIZEOF(n)((sizeof(n)+sizeof(int)-1)&~(sizeof(int)-1))1我们知道对于IX86，sizeof(int)一定是4的整数倍，所以~(sizeof(int)-1))的值一定是右面［sizeof(n)-1］/2位为0，整个这个... 阅读全文
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Windows Registry Editor Version 5.00[HKEY_CURRENT_USER\Software\Imagination Technologies][HKEY_CURRENT_USER\Software\Imagination Technologies\PVRVFRame][HKEY_CURRENT_USER\Software\Imagination Technologies\PVRVFRame\OGLES]"hardware_profile_7.2"="SGX"[HKEY_CURRENT_USER\Software\Ima 阅读全文
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int MathInt_sqrt(unsigned long n){ int root; int m; int left; root = 0; left = (int)n; m = 1 root) { root += m; left -= root; root += m; } root >>= 1; } while (m >>= 2); return root;} 阅读全文
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unsigned int nextPOT(unsigned int x){ x = x - 1; x = x | (x >> 1); x = x | (x >> 2); x = x | (x >> 4); x = x | (x >> 8); x = x | (x >>16); return x + 1;} 阅读全文