From f8da88b080504633c5442a4fcd234cb63912a7bf Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Mon, 4 Dec 2000 04:56:36 +0000
Subject: Update.

	* sysdeps/i386/fpu/s_nextafterl.c (__nextafterl): Hopefully fix
	the handling of denormalized numbers.

	* math/test-misc.c (main): Test for fpclassify and pseudo denormal
	numbers on x86.
	* sysdeps/i386/fpu/fpclassifyl.c: New file.
---
 sysdeps/i386/fpu/s_nextafterl.c | 26 ++++++++++++++++++++++----
 1 file changed, 22 insertions(+), 4 deletions(-)

(limited to 'sysdeps')

diff --git a/sysdeps/i386/fpu/s_nextafterl.c b/sysdeps/i386/fpu/s_nextafterl.c
index bca7181..a905858 100644
--- a/sysdeps/i386/fpu/s_nextafterl.c
+++ b/sysdeps/i386/fpu/s_nextafterl.c
@@ -59,8 +59,17 @@ static char rcsid[] = "$NetBSD: $";
 	    if(ix>iy||((ix==iy) && (hx>hy||((hx==hy)&&(lx>ly))))) {
 	      /* x > y, x -= ulp */
 		if(lx==0) {
-		    if (hx==0) esx -= 1;
-		    hx -= 1;
+		    if (hx <= 0x80000000) {
+		      if (esx == 0)
+			hx = 0;
+		      else {
+			esx -= 1;
+			hx = hx - 1;
+			if (esx > 0)
+			  hx |= 0x80000000;
+		      }
+		    } else
+		      hx -= 1;
 		}
 		lx -= 1;
 	    } else {				/* x < y, x += ulp */
@@ -75,8 +84,17 @@ static char rcsid[] = "$NetBSD: $";
 	    if(esy>=0||(ix>iy||((ix==iy)&&(hx>hy||((hx==hy)&&(lx>ly)))))){
 	      /* x < y, x -= ulp */
 		if(lx==0) {
-		    if (hx==0) esx -= 1;
-		    hx -= 1;
+		    if (hx <= 0x80000000) {
+		      if (esx == 0)
+			hx = 0;
+		      else {
+			esx -= 1;
+			hx = hx - 1;
+			if (esx > 0)
+			  hx |= 0x80000000;
+		      }
+		    } else
+		      hx -= 1;
 		}
 		lx -= 1;
 	    } else {				/* x > y, x += ulp */
-- 
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