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>

diff --git a/sysdeps/ieee754/dbl-64/s_nearbyint.c b/sysdeps/ieee754/dbl-64/s_nearbyint.c
index 4ce570ac7fd8d2a7cf75ac589c06fa2da1241d17..c261885c5a8f8626f9732353f7b87f3043699d94 100644 (file)
--- 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;

diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c
deleted file mode 100644 (file)
index 92fa72a..0000000
--- a/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c
+++ /dev/null
@@ -1,65 +0,0 @@
-/* Adapted for use as nearbyint by Ulrich Drepper <drepper@cygnus.com>.  */
-/*
- * ====================================================
- * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
- *
- * Developed at SunPro, a Sun Microsystems, Inc. business.
- * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice
- * is preserved.
- * ====================================================
- */
-
-/*
- * rint(x)
- * Return x rounded to integral value according to the prevailing
- * rounding mode.
- * Method:
- *     Using floating addition.
- * Exception:
- *     Inexact flag raised if x not equal to rint(x).
- */
-
-#include <fenv.h>
-#include <math.h>
-#include <math-barriers.h>
-#include <math_private.h>
-#include <fenv_private.h>
-#include <libm-alias-double.h>
-
-static const double
-TWO52[2]={
-  4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */
- -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */
-};
-
-double
-__nearbyint(double x)
-{
-       fenv_t env;
-       int64_t i0,sx;
-       int32_t j0;
-       EXTRACT_WORDS64(i0,x);
-       sx = (i0>>63)&1;
-       j0 = ((i0>>52)&0x7ff)-0x3ff;
-       if(__builtin_expect(j0<52, 1)) {
-           if(j0<0) {
-               libc_feholdexcept (&env);
-               double w = TWO52[sx] + math_opt_barrier (x);
-               double t =  w-TWO52[sx];
-               math_force_eval (t);
-               libc_fesetenv (&env);
-               return copysign (t, x);
-           }
-       } else {
-           if(j0==0x400) return x+x;   /* inf or NaN */
-           else return x;              /* x is integral */
-       }
-       libc_feholdexcept (&env);
-       double w = TWO52[sx] + math_opt_barrier (x);
-       double t = w-TWO52[sx];
-       math_force_eval (t);
-       libc_fesetenv (&env);
-       return t;
-}
-libm_alias_double (__nearbyint, nearbyint)

diff --git a/sysdeps/x86_64/fpu/multiarch/s_nearbyint-c.c b/sysdeps/x86_64/fpu/multiarch/s_nearbyint-c.c
index f897a2a6a613d4bc5d2a0c5739b909b910cae060..4fdeb11291f3b2743340f5396e89cf49b9f3d906 100644 (file)
--- a/sysdeps/x86_64/fpu/multiarch/s_nearbyint-c.c
+++ b/sysdeps/x86_64/fpu/multiarch/s_nearbyint-c.c
@@ -1,3 +1,3 @@
 #undef __nearbyint
 #define __nearbyint __nearbyint_c
-#include <sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c>
+#include <sysdeps/ieee754/dbl-64/s_nearbyint.c>