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diff --git a/sysdeps/libm-i387/s_cosl.S b/sysdeps/libm-i387/s_cosl.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(__cosl)
+ fldt 4(%esp)
+ fcos
+ fnstsw %ax
+ andw $0x400,%ax
+ jnz 1f
+ ret
+1: fldpi
+ fadd %st(0)
+ fxch %st(1)
+2: fprem1
+ fnstsw %ax
+ andw $0x400,%ax
+ jnz 2b
+ fstp %st(1)
+ fcos
+ ret
+weak_alias (__cosl, cosl)