1 files changed, 2 insertions, 1 deletions
diff --git a/pow_si.c b/pow_si.c
index 1d170eaed..fe130c14d 100644
--- a/pow_si.c
+++ b/pow_si.c
@@ -19,6 +19,7 @@ along with the MPFR Library; see the file COPYING.LIB.  If not, write to
 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 MA 02111-1307, USA. */
 
+#define MPFR_NEED_LONGLONG_H
 #include "mpfr-impl.h"
 
  /* The computation of y=pow(x,z) is done by
@@ -92,7 +93,7 @@ mpfr_pow_si (mpfr_ptr y, mpfr_srcptr x, long int n, mp_rnd_t rnd_mode)
         /* compute the precision of intermediary variable */
         Nt = MAX(Nx,Ny);
         /* the optimal number of bits : see algorithms.ps */
-        Nt = Nt + 3 + __gmpfr_ceil_log2 (Nt);
+        Nt = Nt + 3 + MPFR_INT_CEIL_LOG2 (Nt);
 
         mpfr_save_emin_emax ();