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[platform/upstream/glibc.git] / sysdeps / ieee754 / flt-32 / e_atanhf.c

diff --git a/sysdeps/ieee754/flt-32/e_atanhf.c b/sysdeps/ieee754/flt-32/e_atanhf.c
index d98a11e..878e153 100644 (file)
--- a/sysdeps/ieee754/flt-32/e_atanhf.c
+++ b/sysdeps/ieee754/flt-32/e_atanhf.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2011 Free Software Foundation, Inc.
+/* Copyright (C) 2011-2019 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@gmail.com>, 2011.
 
@@ -13,9 +13,8 @@
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
 
 
 /* __ieee754_atanh(x)
@@ -36,9 +35,12 @@
 
  */
 
+#include <float.h>
 #include <inttypes.h>
-#include "math.h"
-#include "math_private.h"
+#include <math.h>
+#include <math-barriers.h>
+#include <math_private.h>
+#include <math-underflow.h>
 
 static const float huge = 1e30;
 
@@ -47,27 +49,28 @@ __ieee754_atanhf (float x)
 {
   float xa = fabsf (x);
   float t;
-  if (xa < 0.5f)
+  if (isless (xa, 0.5f))
     {
-      if (__builtin_expect (xa < 0x1.0p-28f, 0))
+      if (__glibc_unlikely (xa < 0x1.0p-28f))
        {
          math_force_eval (huge + x);
+         math_check_force_underflow (x);
          return x;
        }
 
       t = xa + xa;
       t = 0.5f * __log1pf (t + t * xa / (1.0f - xa));
     }
-  else if (__builtin_expect (xa < 1.0f, 1))
+  else if (__glibc_likely (isless (xa, 1.0f)))
     t = 0.5f * __log1pf ((xa + xa) / (1.0f - xa));
   else
     {
-      if (xa > 1.0f)
+      if (isgreater (xa, 1.0f))
        return (x - x) / (x - x);
 
       return x / 0.0f;
     }
 
-  return __copysignf (t, x);
+  return copysignf (t, x);
 }
 strong_alias (__ieee754_atanhf, __atanhf_finite)