55   uint32_t ix, iz, tmp;  in logf()  local
58   ix = asuint (x);  in logf()
61   if (__builtin_expect (ix == 0x3f800000, 0))  in logf()
64   if (__builtin_expect (ix - 0x00800000 >= 0x7f800000 - 0x00800000, 0))  in logf()
67       if (ix * 2 == 0)  in logf()
69       if (ix == 0x7f800000) /* log(inf) == inf.  */  in logf()
71       if ((ix & 0x80000000) || ix * 2 >= 0xff000000)  in logf()
74       ix = asuint (x * 0x1p23f);  in logf()
75       ix -= (int32_t) 23 << 23;  in logf()
81   tmp = ix - OFF;  in logf()
84   iz = ix - (tmp & (uint32_t) 0x1ff << 23);  in logf()