On Fri, Mar 09, 2018 at 09:08:17PM +0100, Mark Kettenis wrote: > > I only got positive feedback. So here is a diff that also works on > gcc architectures and has some regress tests. Oh, and there is a man > page as well. > > ok? >
hi. - there is a lot of trailing whitespace in the man diff. please zap it. - it probably wants $OpenBSD$ - the comma after the sin Xr in SEE ALSO should be removed - consider adding Xr to this page in the cos/sin pages - "the memory pointed to by *s and *c are assigned the values" would read better as *is* assigned, i think. we can fix that in-tree if it's easier. jmc > > Index: lib/libm/man/sincos.3 > =================================================================== > RCS file: lib/libm/man/sincos.3 > diff -N lib/libm/man/sincos.3 > --- /dev/null 1 Jan 1970 00:00:00 -0000 > +++ lib/libm/man/sincos.3 9 Mar 2018 20:05:01 -0000 > @@ -0,0 +1,77 @@ > +.\" Copyright (c) 2011 Steven G. Kargl. > +.\" > +.\" Redistribution and use in source and binary forms, with or without > +.\" modification, are permitted provided that the following conditions > +.\" are met: > +.\" 1. Redistributions of source code must retain the above copyright > +.\" notice, this list of conditions and the following disclaimer. > +.\" 2. Redistributions in binary form must reproduce the above copyright > +.\" notice, this list of conditions and the following disclaimer in the > +.\" documentation and/or other materials provided with the distribution. > +.\" > +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND > +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE > +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR > PURPOSE > +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE > +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR > CONSEQUENTIAL > +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS > +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) > +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, > STRICT > +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY > +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF > +.\" SUCH DAMAGE. > +.\" > +.\" $FreeBSD: head/lib/msun/man/sincos.3 319047 2017-05-28 06:13:38Z mmel $ > +.\" > +.Dd $Mdocdate$ > +.Dt SINCOS 3 > +.Os > +.Sh NAME > +.Nm sincos , > +.Nm sincosf , > +.Nm sincosl > +.Nd sine and cosine functions > +.Sh SYNOPSIS > +.In math.h > +.Ft void > +.Fn sincos "double x" "double *s" "double *c" > +.Ft void > +.Fn sincosf "float x" "float *s" "float *c" > +.Ft void > +.Fn sincosl "long double x" "long double *s" "long double *c" > +.Sh DESCRIPTION > +The > +.Fn sincos , > +.Fn sincosf , > +and > +.Fn sincosl > +functions compute the sine and cosine of > +.Fa x . > +Using these functions allows argument reduction to occur only > +once instead of twice with individual invocations of > +.Fn sin > +and > +.Fn cos . > +Like > +.Fn sin > +and > +.Fn cos , > +a large magnitude argument may yield a result with little > +or no significance. > +.Sh RETURN VALUES > +Upon returning from > +.Fn sincos , > +.Fn sincosf , > +and > +.Fn sincosl , > +the memory pointed to by > +.Ar "*s" > +and > +.Ar "*c" > +are assigned the values of sine and cosine, respectively. > +.Sh SEE ALSO > +.Xr cos 3 , > +.Xr sin 3 , > +.Sh HISTORY > +These functions first appeared in > +.Ox 6.3 .
