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authorUlrich Drepper <drepper@redhat.com>2008-08-05 22:08:42 +0000
committerUlrich Drepper <drepper@redhat.com>2008-08-05 22:08:42 +0000
commit9523fd28069af5a1045360cdb990257b595006ee (patch)
tree79ea9dd83fe4a7a994c976ed78d372a969a494a8 /sysdeps/i386/fpu/s_expm1l.S
parentc400c931b8285d05c8b99918e7bab2d6b3f21f30 (diff)
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* sysdeps/i386/fpu/s_expm1l.S: Simply use exp implementation for large
	parameters.
	* sysdeps/x86_64/fpu/s_expm1l.S: Likewise.
	Patch by Denys Vlasenko <dvlasenk@redhat.com>.

	* nscd/connections.c (nscd_init): Typo in preprocessor directive.
Diffstat (limited to 'sysdeps/i386/fpu/s_expm1l.S')
-rw-r--r--sysdeps/i386/fpu/s_expm1l.S7
1 files changed, 6 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/s_expm1l.S b/sysdeps/i386/fpu/s_expm1l.S
index 2dc379b790..b69b22bc62 100644
--- a/sysdeps/i386/fpu/s_expm1l.S
+++ b/sysdeps/i386/fpu/s_expm1l.S
@@ -1,5 +1,5 @@
 /* ix87 specific implementation of exp(x)-1.
-   Copyright (C) 1996, 1997, 2002, 2005 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 2002, 2005, 2008 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
    Based on code by John C. Bowman <bowman@ipp-garching.mpg.de>.
@@ -48,6 +48,11 @@ l2e:	.tfloat 1.442695040888963407359924681002
 
 	.text
 ENTRY(__expm1l)
+	movzwl	4+8(%esp), %eax	// load sign bit and 15-bit exponent
+	xorb	$0x80, %ah	// invert sign bit (now 1 is "positive")
+	cmpl	$0xc006, %eax	// is num positive and exp >= 6 (number is >= 128.0)?
+	jae     __ieee754_expl	// (if num is denormal, it is at least >= 64.0)
+
 	fldt	4(%esp)		// x
 	fxam			// Is NaN or +-Inf?
 	fstsw	%ax