From 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Thu, 12 Jul 2007 18:26:36 +0000
Subject: 2.5-18.1

---
 sysdeps/i386/fpu/e_log.S | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

(limited to 'sysdeps/i386/fpu/e_log.S')

diff --git a/sysdeps/i386/fpu/e_log.S b/sysdeps/i386/fpu/e_log.S
index c7cacdfb0a..ce55b72292 100644
--- a/sysdeps/i386/fpu/e_log.S
+++ b/sysdeps/i386/fpu/e_log.S
@@ -36,13 +36,15 @@ limit:	.double 0.29
 ENTRY(__ieee754_log)
 	fldln2			// log(2)
 	fldl	4(%esp)		// x : log(2)
+	fxam
+	fnstsw
 #ifdef PIC
-	call	1f
-1:	popl	%edx
-	addl	$_GLOBAL_OFFSET_TABLE_+[.-1b], %edx
+	LOAD_PIC_REG (dx)
 #endif
 	fld	%st		// x : x : log(2)
-	fsubl	MO(one)		// x-1 : x : log(2)
+	sahf
+	jc	3f		// in case x is NaN or +-Inf
+4:	fsubl	MO(one)		// x-1 : x : log(2)
 	fld	%st		// x-1 : x-1 : x : log(2)
 	fabs			// |x-1| : x-1 : x : log(2)
 	fcompl	MO(limit)	// x-1 : x : log(2)
@@ -56,4 +58,9 @@ ENTRY(__ieee754_log)
 2:	fstp	%st(0)		// x : log(2)
 	fyl2x			// log(x)
 	ret
+
+3:	jp	4b		// in case x is +-Inf
+	fstp	%st(1)
+	fstp	%st(1)
+	ret
 END (__ieee754_log)
-- 
cgit 1.4.1