GNU C Library master sources branch, master, updated. glibc-2.10-310-gdeb13bc

[drepper at sourceware dot org]

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http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=deb13bcda9a63ea65a82df138d71c803f963c8a7

commit deb13bcda9a63ea65a82df138d71c803f963c8a7
Author: Ulrich Drepper <drepper@redhat.com>
Date:   Tue Aug 25 23:53:23 2009 -0700

    Make llround an alias for lround on 64-bit machines.

diff --git a/ChangeLog b/ChangeLog
index a97b7d9..e56e139 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,8 @@
 2009-08-25  Ulrich Drepper  <drepper@redhat.com>
 
+	* sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c: Add llround aliases.
+	* sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c: New file.
+
 	* sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c: New file
 
 	* sysdeps/ieee754/dbl-64/wordsize-64/s_rint.c: New file.
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c
new file mode 100644
index 0000000..f7c9ea5
--- /dev/null
+++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c
@@ -0,0 +1 @@
+/* The code is the same as lround.  Use an alias, see l_round.c.  */
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c
index 2df169e..30ea5db 100644
--- a/sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c
+++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c
@@ -18,6 +18,9 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#define llround __hidden_llround
+#define __llround __hidden___llround
+
 #include <math.h>
 
 #include "math_private.h"
@@ -65,3 +68,13 @@ weak_alias (__lround, lround)
 strong_alias (__lround, __lroundl)
 weak_alias (__lround, lroundl)
 #endif
+
+/* long long has the same width as long on 64-bit machines.  */
+#undef llround
+#undef __llround
+strong_alias (__lround, __llround)
+weak_alias (__lround, llround)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__lround, __llroundl)
+weak_alias (__lround, llroundl)
+#endif

http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=77a1e0873f98b57d9e50138b471be0d8db8da99f

commit 77a1e0873f98b57d9e50138b471be0d8db8da99f
Author: Ulrich Drepper <drepper@redhat.com>
Date:   Tue Aug 25 23:26:16 2009 -0700

    Optimized nearbyint for 64-bit.

diff --git a/ChangeLog b/ChangeLog
index af3d057..a97b7d9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2009-08-25  Ulrich Drepper  <drepper@redhat.com>
 
+	* sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c: New file
+
 	* sysdeps/ieee754/dbl-64/wordsize-64/s_rint.c: New file.
 
 	* sysdeps/ieee754/dbl-64/wordsize-64/s_round.c: New file.
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c
new file mode 100644
index 0000000..cb49019
--- /dev/null
+++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c
@@ -0,0 +1,86 @@
+/* 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_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 __nearbyint(double x)
+#else
+	double __nearbyint(x)
+	double x;
+#endif
+{
+	fenv_t env;
+	int64_t i0,sx;
+	int32_t j0;
+	EXTRACT_WORDS64(i0,x);
+	sx = (i0>>63)&1;
+	j0 = ((i0>>52)&0x7ff)-0x3ff;
+	if(j0<52) {
+	    if(j0<0) {
+	      if((i0&UINT64_C(0x7fffffffffffffff))==0) return x;
+		uint64_t i = i0 & UINT64_C(0xfffffffffffff);
+		i0 &= UINT64_C(0xfffe000000000000);
+		i0 |= (((i|-i) >> 12) & UINT64_C(0x8000000000000));
+		INSERT_WORDS64(x,i0);
+		feholdexcept (&env);
+		double w = TWO52[sx]+x;
+		double t =  w-TWO52[sx];
+		fesetenv (&env);
+		EXTRACT_WORDS64(i0,t);
+		INSERT_WORDS64(t,(i0&UINT64_C(0x7fffffffffffffff))|(sx<<63));
+		return t;
+	    } else {
+		uint64_t i = UINT64_C(0x000fffffffffffff)>>j0;
+		if((i0&i)==0) return x; /* x is integral */
+		i>>=1;
+		if((i0&i)!=0)
+		    i0 = (i0&(~i))|(UINT64_C(0x4000000000000)>>j0);
+	    }
+	} else {
+	    if(j0==0x400) return x+x;	/* inf or NaN */
+	    else return x;		/* x is integral */
+	}
+	INSERT_WORDS64(x,i0);
+	feholdexcept (&env);
+	double w = TWO52[sx]+x;
+	double t = w-TWO52[sx];
+	fesetenv (&env);
+	return t;
+}
+weak_alias (__nearbyint, nearbyint)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__nearbyint, __nearbyintl)
+weak_alias (__nearbyint, nearbyintl)
+#endif

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                          |    5 ++++
 sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c     |    1 +
 sysdeps/ieee754/dbl-64/wordsize-64/s_lround.c      |   13 +++++++++++
 .../dbl-64/wordsize-64/{s_rint.c => s_nearbyint.c} |   23 +++++++++++++-------
 4 files changed, 34 insertions(+), 8 deletions(-)
 create mode 100644 sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c
 copy sysdeps/ieee754/dbl-64/wordsize-64/{s_rint.c => s_nearbyint.c} (79%)


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