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diff --git a/src/VBox/Runtime/common/math/sinl.asm b/src/VBox/Runtime/common/math/sinl.asm
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+; $Id: sinl.asm $
+;; @file
+; IPRT - No-CRT sinl - AMD64 & X86.
+;
+
+;
+; Copyright (C) 2006-2020 Oracle Corporation
+;
+; This file is part of VirtualBox Open Source Edition (OSE), as
+; available from http://www.virtualbox.org. This file is free software;
+; you can redistribute it and/or modify it under the terms of the GNU
+; General Public License (GPL) as published by the Free Software
+; Foundation, in version 2 as it comes in the "COPYING" file of the
+; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+;
+; The contents of this file may alternatively be used under the terms
+; of the Common Development and Distribution License Version 1.0
+; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+; VirtualBox OSE distribution, in which case the provisions of the
+; CDDL are applicable instead of those of the GPL.
+;
+; You may elect to license modified versions of this file under the
+; terms and conditions of either the GPL or the CDDL or both.
+;
+
+%include "iprt/asmdefs.mac"
+
+BEGINCODE
+
+;;
+; Compute the sine of lrd
+; @returns st(0)
+; @param lrd [xSP + xCB*2]
+BEGINPROC RT_NOCRT(sinl)
+ push xBP
+ mov xBP, xSP
+ sub xSP, 10h
+
+ fld tword [xBP + xCB*2]
+ fsin
+ fnstsw ax
+ test ah, 04h
+ jz .done
+
+ fldpi
+ fadd st0
+ fxch st1
+.again:
+ fprem1
+ fnstsw ax
+ test ah, 04h
+ jnz .again
+ fstp st1
+ fsin
+
+.done:
+ leave
+ ret
+ENDPROC RT_NOCRT(sinl)
+