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-rw-r--r--sysdeps/i386/fpu/s_tanl.S32
1 files changed, 32 insertions, 0 deletions
diff --git a/sysdeps/i386/fpu/s_tanl.S b/sysdeps/i386/fpu/s_tanl.S
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+++ b/sysdeps/i386/fpu/s_tanl.S
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+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Public domain.
+ *
+ * Adapted for `long double' by Ulrich Drepper <drepper@cygnus.com>.
+ */
+
+#include <machine/asm.h>
+
+RCSID("$NetBSD: $")
+
+ENTRY(__tanl)
+	fldt	4(%esp)
+	fptan
+	fnstsw	%ax
+	testl	$0x400,%eax
+	jnz	1f
+	fstp	%st(0)
+	ret
+1:	fldpi
+	fadd	%st(0)
+	fxch	%st(1)
+2:	fprem1
+	fstsw	%ax
+	testl	$0x400,%eax
+	jnz	2b
+	fstp	%st(1)
+	fptan
+	fstp	%st(0)
+	ret
+END (__tanl)
+weak_alias (__tanl, tanl)