Always use wordsize-64 version of s_nearbyint.c.

This patch replaces s_nearbyint.c in sysdeps/dbl-64 with the one in
sysdeps/dbl-64/wordsize-64 and removes the latter one.
The code is not changed except changes in code style.

Also adjusted the include path in x86_64 file.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>

1 files changed, 16 insertions, 22 deletions

diff --git a/sysdeps/ieee754/dbl-64/s_nearbyint.c b/sysdeps/ieee754/dbl-64/s_nearbyint.c
index 4ce570a..c261885 100644
--- a/sysdeps/ieee754/dbl-64/s_nearbyint.c
+++ b/sysdeps/ieee754/dbl-64/s_nearbyint.c
@@ -10,10 +10,6 @@
  * ====================================================
  */
 
-#if defined(LIBM_SCCS) && !defined(lint)
-static char rcsid[] = "$NetBSD: s_rint.c,v 1.8 1995/05/10 20:48:04 jtc Exp $";
-#endif
-
 /*
  * rint(x)
  * Return x rounded to integral value according to the prevailing
@@ -32,44 +28,42 @@ static char rcsid[] = "$NetBSD: s_rint.c,v 1.8 1995/05/10 20:48:04 jtc Exp $";
 #include <libm-alias-double.h>
 
 static const double
-  TWO52[2] = {
-  4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */
- -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */
+TWO52[2] = {
+	    4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */
+	    -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */
 };
 
 double
 __nearbyint (double x)
 {
   fenv_t env;
-  int32_t i0, j0, sx;
-  double w, t;
-  GET_HIGH_WORD (i0, x);
-  sx = (i0 >> 31) & 1;
-  j0 = ((i0 >> 20) & 0x7ff) - 0x3ff;
-  if (j0 < 52)
+  int64_t i0, sx;
+  int32_t j0;
+  EXTRACT_WORDS64 (i0, x);
+  sx = (i0 >> 63) & 1;
+  j0 = ((i0 >> 52) & 0x7ff) - 0x3ff;
+  if (__glibc_likely (j0 < 52))
     {
       if (j0 < 0)
 	{
 	  libc_feholdexcept (&env);
-	  w = TWO52[sx] + math_opt_barrier (x);
-	  t = w - TWO52[sx];
+	  double w = TWO52[sx] + math_opt_barrier (x);
+	  double t =  w - TWO52[sx];
 	  math_force_eval (t);
 	  libc_fesetenv (&env);
-	  GET_HIGH_WORD (i0, t);
-	  SET_HIGH_WORD (t, (i0 & 0x7fffffff) | (sx << 31));
-	  return t;
+	  return copysign (t, x);
 	}
     }
   else
     {
       if (j0 == 0x400)
-	return x + x;                   /* inf or NaN */
+	return x + x;			/* inf or NaN  */
       else
-	return x;                       /* x is integral */
+	return x;			/* x is integral  */
     }
   libc_feholdexcept (&env);
-  w = TWO52[sx] + math_opt_barrier (x);
-  t = w - TWO52[sx];
+  double w = TWO52[sx] + math_opt_barrier (x);
+  double t = w - TWO52[sx];
   math_force_eval (t);
   libc_fesetenv (&env);
   return t;