Use rounds{s,d} for x86 rint, ceil, floor

[thirdparty/glibc.git] / sysdeps / ieee754 / dbl-64 / s_rint.c

diff --git a/sysdeps/ieee754/dbl-64/s_rint.c b/sysdeps/ieee754/dbl-64/s_rint.c
index 4e6381efbe040146b518eba62a53534981453a4a..a671a6277ead397cebba4e479e1ff4ee5df6f71c 100644 (file)
--- a/sysdeps/ieee754/dbl-64/s_rint.c
+++ b/sysdeps/ieee754/dbl-64/s_rint.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 $";
-#endif
-
 /*
  * rint(x)
  * Return x rounded to integral value according to the prevailing
@@ -27,22 +23,14 @@ static char rcsid[] = "$NetBSD: s_rint.c,v 1.8 1995/05/10 20:48:04 jtc Exp $";
 #include "math.h"
 #include "math_private.h"
 
-#ifdef __STDC__
 static const double
-#else
-static double
-#endif
 TWO52[2]={
   4.50359962737049600000e+15, /* 0x43300000, 0x00000000 */
  -4.50359962737049600000e+15, /* 0xC3300000, 0x00000000 */
 };
 
-#ifdef __STDC__
-       double __rint(double x)
-#else
-       double __rint(x)
-       double x;
-#endif
+double
+__rint(double x)
 {
        int32_t i0,j0,sx;
        u_int32_t i,i1;
@@ -57,11 +45,11 @@ TWO52[2]={
                i0 &= 0xfffe0000;
                i0 |= ((i1|-i1)>>12)&0x80000;
                SET_HIGH_WORD(x,i0);
-               w = TWO52[sx]+x;
-               t =  w-TWO52[sx];
+               w = TWO52[sx]+x;
+               t =  w-TWO52[sx];
                GET_HIGH_WORD(i0,t);
                SET_HIGH_WORD(t,(i0&0x7fffffff)|(sx<<31));
-               return t;
+               return t;
            } else {
                i = (0x000fffff)>>j0;
                if(((i0&i)|i1)==0) return x; /* x is integral */
@@ -91,8 +79,10 @@ TWO52[2]={
        w = TWO52[sx]+x;
        return w-TWO52[sx];
 }
+#ifndef __rint
 weak_alias (__rint, rint)
-#ifdef NO_LONG_DOUBLE
+# ifdef NO_LONG_DOUBLE
 strong_alias (__rint, __rintl)
 weak_alias (__rint, rintl)
+# endif
 #endif