drivers/gpu/drm/nouveau/core/include/core/math.h

   1 #ifndef __NOUVEAU_MATH_H__
   2 #define __NOUVEAU_MATH_H__
   3
   4 static inline int
   5 log2i(u64 base)
   6 {
   7         u64 temp = base >> 1;
   8         int log2;
   9
  10         for (log2 = 0; temp; log2++, temp >>= 1) {
  11         }
  12
  13         return (base & (base - 1)) ? log2 + 1: log2;
  14 }
  15
  16 #endif