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diff --git a/sysdeps/libm-i387/s_ceilf.S b/sysdeps/libm-i387/s_ceilf.S
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+++ b/sysdeps/libm-i387/s_ceilf.S
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+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Public domain.
+ */
+
+#include <machine/asm.h>
+
+RCSID("$NetBSD: s_ceilf.S,v 1.3 1995/05/08 23:52:44 jtc Exp $")
+
+ENTRY(__ceilf)
+	pushl	%ebp
+	movl	%esp,%ebp
+	subl	$8,%esp
+
+	fstcw	-12(%ebp)		/* store fpu control word */
+	movw	-12(%ebp),%dx
+	orw	$0x0800,%dx		/* round towards +oo */
+	andw	$0xfbff,%dx
+	movw	%dx,-16(%ebp)
+	fldcw	-16(%ebp)		/* load modfied control word */
+
+	flds	8(%ebp);		/* round */
+	frndint
+
+	fldcw	-12(%ebp)		/* restore original control word */
+
+	leave
+	ret
+weak_alias (__ceilf, ceilf)