diff options
Diffstat (limited to 'src/lisp.h')
| -rw-r--r-- | src/lisp.h | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/src/lisp.h b/src/lisp.h index c9a64f07427..57c1c7395c1 100644 --- a/src/lisp.h +++ b/src/lisp.h @@ -3906,18 +3906,11 @@ integer_to_uintmax (Lisp_Object num, uintmax_t *n) } /* Return floor (log2 (N)) as an int, where 0 < N <= ULLONG_MAX. */ -#if (201112 <= __STDC_VERSION__ && INT_MAX <= UINT_MAX \ - && LONG_MAX <= ULONG_MAX && LLONG_MAX <= ULLONG_MAX) -# define elogb(n) \ - _Generic (+(n), \ - int: UINT_WIDTH - 1 - count_leading_zeros (n), \ - unsigned int: UINT_WIDTH - 1 - count_leading_zeros (n), \ - long: ULONG_WIDTH - 1 - count_leading_zeros_l (n), \ - unsigned long: ULONG_WIDTH - 1 - count_leading_zeros_l (n), \ - default: ULLONG_WIDTH - 1 - count_leading_zeros_ll (n)) -#else -# define elogb(n) (ULLONG_WIDTH - 1 - count_leading_zeros_ll (n)) -#endif +INLINE int +elogb (unsigned long long int n) +{ + return ULLONG_WIDTH - 1 - count_leading_zeros_ll (n); +} /* A modification count. These are wide enough, and incremented rarely enough, so that they should never overflow a 60-bit counter |