Index: stable/12/lib/libc/stdio/getwc.3
===================================================================
--- stable/12/lib/libc/stdio/getwc.3	(revision 363762)
+++ stable/12/lib/libc/stdio/getwc.3	(revision 363763)
@@ -1,114 +1,121 @@
 .\"	$NetBSD: getwc.3,v 1.3 2002/02/07 07:00:26 ross Exp $
 .\"
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
 .\"
 .\" This code is derived from software contributed to Berkeley by
 .\" Chris Torek and the American National Standards Committee X3,
 .\" on Information Processing Systems.
 .\"
 .\" 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.
 .\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" 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.
 .\"
 .\"     @(#)getc.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
 .Dd March 3, 2004
 .Dt GETWC 3
 .Os
 .Sh NAME
 .Nm fgetwc ,
 .Nm getwc ,
 .Nm getwchar
 .Nd get next wide character from input stream
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
 .In stdio.h
 .In wchar.h
 .Ft wint_t
 .Fn fgetwc "FILE *stream"
 .Ft wint_t
 .Fn getwc "FILE *stream"
 .Ft wint_t
 .Fn getwchar void
 .Sh DESCRIPTION
 The
 .Fn fgetwc
 function
 obtains the next input wide character (if present) from the stream pointed at by
 .Fa stream ,
 or the next character pushed back on the stream via
 .Xr ungetwc 3 .
 .Pp
 The
 .Fn getwc
 function
 acts essentially identically to
 .Fn fgetwc .
 .Pp
 The
 .Fn getwchar
 function
 is equivalent to
 .Fn getwc
 with the argument
 .Dv stdin .
 .Sh RETURN VALUES
 If successful, these routines return the next wide character
 from the
 .Fa stream .
 If the stream is at end-of-file or a read error occurs,
 the routines return
 .Dv WEOF .
 The routines
 .Xr feof 3
 and
 .Xr ferror 3
 must be used to distinguish between end-of-file and error.
 If an error occurs, the global variable
 .Va errno
 is set to indicate the error.
 The end-of-file condition is remembered, even on a terminal, and all
 subsequent attempts to read will return
 .Dv WEOF
 until the condition is cleared with
 .Xr clearerr 3 .
 .Sh SEE ALSO
 .Xr ferror 3 ,
 .Xr fopen 3 ,
 .Xr fread 3 ,
 .Xr getc 3 ,
 .Xr putwc 3 ,
 .Xr stdio 3 ,
 .Xr ungetwc 3
 .Sh STANDARDS
 The
 .Fn fgetwc ,
 .Fn getwc
 and
 .Fn getwchar
 functions
 conform to
 .St -isoC-99 .
+.Sh HISTORY
+A version of the
+.Fn getc
+and
+.Fn getw
+functions appeared in
+.At v1 .
Index: stable/12/lib/libc/stdlib/atof.3
===================================================================
--- stable/12/lib/libc/stdlib/atof.3	(revision 363762)
+++ stable/12/lib/libc/stdlib/atof.3	(revision 363763)
@@ -1,95 +1,100 @@
 .\" Copyright (c) 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
 .\"
 .\" This code is derived from software contributed to Berkeley by
 .\" the American National Standards Committee X3, on Information
 .\" Processing Systems.
 .\"
 .\" 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.
 .\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" 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.
 .\"
 .\"     @(#)atof.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 4, 1993
+.Dd April 1, 2020
 .Dt ATOF 3
 .Os
 .Sh NAME
 .Nm atof
 .Nd convert
 .Tn ASCII
 string to double
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
 .In stdlib.h
 .Ft double
 .Fn atof "const char *nptr"
 .Sh DESCRIPTION
 The
 .Fn atof
 function converts the initial portion of the string pointed to by
 .Fa nptr
 to
 .Vt double
 representation.
 .Pp
 It is equivalent to:
 .Bd -literal -offset indent
 strtod(nptr, (char **)NULL);
 .Ed
 .Pp
 The decimal point
 character is defined in the program's locale (category
 .Dv LC_NUMERIC ) .
 .Sh IMPLEMENTATION NOTES
 The
 .Fn atof
 function is not thread-safe and also not async-cancel-safe.
 .Pp
 The
 .Fn atof
 function has been deprecated by
 .Fn strtod
 and should not be used in new code.
 .Sh ERRORS
 The function
 .Fn atof
 need not affect the value of
 .Va errno
 on an error.
 .Sh SEE ALSO
 .Xr atoi 3 ,
 .Xr atol 3 ,
 .Xr strtod 3 ,
 .Xr strtol 3 ,
 .Xr strtoul 3
 .Sh STANDARDS
 The
 .Fn atof
 function conforms to
 .St -p1003.1-90 ,
 .St -isoC ,
 and
 .St -isoC-99 .
+.Sh HISTORY
+The
+.Fn atof
+function appeared in
+.At v1 .
Index: stable/12/lib/libc/stdlib/atoi.3
===================================================================
--- stable/12/lib/libc/stdlib/atoi.3	(revision 363762)
+++ stable/12/lib/libc/stdlib/atoi.3	(revision 363763)
@@ -1,87 +1,92 @@
 .\" Copyright (c) 1990, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
 .\"
 .\" This code is derived from software contributed to Berkeley by
 .\" the American National Standards Committee X3, on Information
 .\" Processing Systems.
 .\"
 .\" 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.
 .\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" 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.
 .\"
 .\"     @(#)atoi.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd June 13, 2018
+.Dd April 1, 2020
 .Dt ATOI 3
 .Os
 .Sh NAME
 .Nm atoi
 .Nd convert
 .Tn ASCII
 string to integer
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
 .In stdlib.h
 .Ft int
 .Fn atoi "const char *nptr"
 .Sh DESCRIPTION
 The
 .Fn atoi
 function converts the initial portion of the string pointed to by
 .Fa nptr
 to
 .Vt int
 representation.
 .Pp
 It is equivalent to:
 .Bd -literal -offset indent
 (int)strtol(nptr, NULL, 10);
 .Ed
 .Pp
 The
 .Fn atoi
 function has been deprecated by
 .Fn strtol
 and should not be used in new code.
 .Sh ERRORS
 The function
 .Fn atoi
 need not affect the value of
 .Va errno
 on an error.
 .Sh SEE ALSO
 .Xr atof 3 ,
 .Xr atol 3 ,
 .Xr strtod 3 ,
 .Xr strtol 3 ,
 .Xr strtoul 3
 .Sh STANDARDS
 The
 .Fn atoi
 function conforms to
 .St -p1003.1-90 ,
 .St -isoC ,
 and
 .St -isoC-99 .
+.Sh HISTORY
+The
+.Fn atoi
+function appeared in
+.At v1 .
Index: stable/12/lib/msun/man/cos.3
===================================================================
--- stable/12/lib/msun/man/cos.3	(revision 363762)
+++ stable/12/lib/msun/man/cos.3	(revision 363763)
@@ -1,83 +1,88 @@
 .\" Copyright (c) 1991 The Regents of the University of California.
 .\" All rights reserved.
 .\"
 .\" 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.
 .\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" 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.
 .\"
 .\"     from: @(#)cos.3	5.1 (Berkeley) 5/2/91
 .\" $FreeBSD$
 .\"
-.Dd January 24, 2008
+.Dd April 1, 2020
 .Dt COS 3
 .Os
 .Sh NAME
 .Nm cos ,
 .Nm cosf ,
 .Nm cosl
 .Nd cosine functions
 .Sh LIBRARY
 .Lb libm
 .Sh SYNOPSIS
 .In math.h
 .Ft double
 .Fn cos "double x"
 .Ft float
 .Fn cosf "float x"
 .Ft long double
 .Fn cosl "long double x"
 .Sh DESCRIPTION
 The
 .Fn cos ,
 .Fn cosf ,
 and
 .Fn cosl
 functions compute the cosine of
 .Fa x
 (measured in radians).
 A large magnitude argument may yield a result with little or no
 significance.
 For a discussion of error due to roundoff, see
 .Xr math 3 .
 .Sh RETURN VALUES
 The
 .Fn cos ,
 .Fn cosf ,
 and
 .Fn cosl
 functions return the cosine value.
 .Sh SEE ALSO
 .Xr acos 3 ,
 .Xr asin 3 ,
 .Xr atan 3 ,
 .Xr atan2 3 ,
 .Xr ccos 3 ,
 .Xr cosh 3 ,
 .Xr math 3 ,
 .Xr sin 3 ,
 .Xr sinh 3 ,
 .Xr tan 3 ,
 .Xr tanh 3
 .Sh STANDARDS
 These functions conform to
 .St -isoC-99 .
+.Sh HISTORY
+The
+.Fn cos
+function first appeared in
+.At v1 .
Index: stable/12/lib/msun/man/exp.3
===================================================================
--- stable/12/lib/msun/man/exp.3	(revision 363762)
+++ stable/12/lib/msun/man/exp.3	(revision 363763)
@@ -1,192 +1,197 @@
 .\" Copyright (c) 1985, 1991 Regents of the University of California.
 .\" All rights reserved.
 .\"
 .\" 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.
 .\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" 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.
 .\"
 .\"     from: @(#)exp.3	6.12 (Berkeley) 7/31/91
 .\" $FreeBSD$
 .\"
-.Dd December 8, 2017
+.Dd April 1, 2020
 .Dt EXP 3
 .Os
 .Sh NAME
 .Nm exp ,
 .Nm expf ,
 .Nm expl ,
 .\" The sorting error is intentional.  exp, expf, and expl should be adjacent.
 .Nm exp2 ,
 .Nm exp2f ,
 .Nm exp2l ,
 .Nm expm1 ,
 .Nm expm1f ,
 .Nm expm1l ,
 .Nm pow ,
 .Nm powf ,
 .Nm powl
 .Nd exponential and power functions
 .Sh LIBRARY
 .Lb libm
 .Sh SYNOPSIS
 .In math.h
 .Ft double
 .Fn exp "double x"
 .Ft float
 .Fn expf "float x"
 .Ft long double
 .Fn expl "long double x"
 .Ft double
 .Fn exp2 "double x"
 .Ft float
 .Fn exp2f "float x"
 .Ft long double
 .Fn exp2l "long double x"
 .Ft double
 .Fn expm1 "double x"
 .Ft float
 .Fn expm1f "float x"
 .Ft long double
 .Fn expm1l "long double x"
 .Ft double
 .Fn pow "double x" "double y"
 .Ft float
 .Fn powf "float x" "float y"
 .Ft long double
 .Fn powl "long double x" "long double y"
 .Sh DESCRIPTION
 The
 .Fn exp ,
 .Fn expf ,
 and
 .Fn expl
 functions compute the base
 .Ms e
 exponential value of the given argument
 .Fa x .
 .Pp
 The
 .Fn exp2 ,
 .Fn exp2f ,
 and
 .Fn exp2l
 functions compute the base 2 exponential of the given argument
 .Fa x .
 .Pp
 The
 .Fn expm1 ,
 .Fn expm1f ,
 and the
 .Fn expm1l
 functions compute the value exp(x)\-1 accurately even for tiny argument
 .Fa x .
 .Pp
 The
 .Fn pow ,
 .Fn powf ,
 and the
 .Fn powl
 functions compute the value
 of
 .Ar x
 to the exponent
 .Ar y .
 .Sh ERROR (due to Roundoff etc.)
 The values of
 .Fn exp 0 ,
 .Fn expm1 0 ,
 .Fn exp2 integer ,
 and
 .Fn pow integer integer
 are exact provided that they are representable.
 .\" XXX Is this really true for pow()?
 Otherwise the error in these functions is generally below one
 .Em ulp .
 .Sh RETURN VALUES
 These functions will return the appropriate computation unless an error
 occurs or an argument is out of range.
 The functions
 .Fn pow x y ,
 .Fn powf x y ,
 and
 .Fn powl x y
 raise an invalid exception and return an \*(Na if
 .Fa x
 < 0 and
 .Fa y
 is not an integer.
 .Sh NOTES
 The function
 .Fn pow x 0
 returns x**0 = 1 for all x including x = 0, \*(If, and \*(Na .
 Previous implementations of pow may
 have defined x**0 to be undefined in some or all of these
 cases.
 Here are reasons for returning x**0 = 1 always:
 .Bl -enum -width indent
 .It
 Any program that already tests whether x is zero (or
 infinite or \*(Na) before computing x**0 cannot care
 whether 0**0 = 1 or not.
 Any program that depends
 upon 0**0 to be invalid is dubious anyway since that
 expression's meaning and, if invalid, its consequences
 vary from one computer system to another.
 .It
 Some Algebra texts (e.g.\& Sigler's) define x**0 = 1 for
 all x, including x = 0.
 This is compatible with the convention that accepts a[0]
 as the value of polynomial
 .Bd -literal -offset indent
 p(x) = a[0]\(**x**0 + a[1]\(**x**1 + a[2]\(**x**2 +...+ a[n]\(**x**n
 .Ed
 .Pp
 at x = 0 rather than reject a[0]\(**0**0 as invalid.
 .It
 Analysts will accept 0**0 = 1 despite that x**y can
 approach anything or nothing as x and y approach 0
 independently.
 The reason for setting 0**0 = 1 anyway is this:
 .Bd -ragged -offset indent
 If x(z) and y(z) are
 .Em any
 functions analytic (expandable
 in power series) in z around z = 0, and if there
 x(0) = y(0) = 0, then x(z)**y(z) \(-> 1 as z \(-> 0.
 .Ed
 .It
 If 0**0 = 1, then
 \*(If**0 = 1/0**0 = 1 too; and
 then \*(Na**0 = 1 too because x**0 = 1 for all finite
 and infinite x, i.e., independently of x.
 .El
 .Sh SEE ALSO
 .Xr clog 3
 .Xr cpow 3
 .Xr fenv 3 ,
 .Xr ldexp 3 ,
 .Xr log 3 ,
 .Xr math 3
 .Sh STANDARDS
 These functions conform to
 .St -isoC-99 .
+.Sh HISTORY
+The
+.Fn exp
+function appeared in
+.At v1 .
Index: stable/12/lib/msun/man/sin.3
===================================================================
--- stable/12/lib/msun/man/sin.3	(revision 363762)
+++ stable/12/lib/msun/man/sin.3	(revision 363763)
@@ -1,82 +1,87 @@
 .\" Copyright (c) 1991 The Regents of the University of California.
 .\" All rights reserved.
 .\"
 .\"	@(#)sin.3	6.7 (Berkeley) 4/19/91
 .\" 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.
 .\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" 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.
 .\"
 .\"     from: @(#)sin.3	6.7 (Berkeley) 4/19/91
 .\" $FreeBSD$
 .\"
-.Dd January 24, 2008
+.Dd April 1, 2020
 .Dt SIN 3
 .Os
 .Sh NAME
 .Nm sin ,
 .Nm sinf ,
 .Nm sinl
 .Nd sine functions
 .Sh LIBRARY
 .Lb libm
 .Sh SYNOPSIS
 .In math.h
 .Ft double
 .Fn sin "double x"
 .Ft float
 .Fn sinf "float x"
 .Ft long double
 .Fn sinl "long double x"
 .Sh DESCRIPTION
 The
 .Fn sin ,
 .Fn sinf ,
 and
 .Fn sinl
 functions compute the sine of
 .Fa x
 (measured in radians).
 A large magnitude argument may yield a result with little
 or no significance.
 .Sh RETURN VALUES
 The
 .Fn sin ,
 .Fn sinf ,
 and
 .Fn sinl
 functions return the sine value.
 .Sh SEE ALSO
 .Xr acos 3 ,
 .Xr asin 3 ,
 .Xr atan 3 ,
 .Xr atan2 3 ,
 .Xr cos 3 ,
 .Xr cosh 3 ,
 .Xr csin 3 ,
 .Xr math 3 ,
 .Xr sinh 3 ,
 .Xr tan 3 ,
 .Xr tanh 3
 .Sh STANDARDS
 These functions conform to
 .St -isoC-99 .
+.Sh HISTORY
+The
+.Fn sin
+function first appeared in
+.At v1 .
Index: stable/12
===================================================================
--- stable/12	(revision 363762)
+++ stable/12	(revision 363763)

Property changes on: stable/12
___________________________________________________________________
Modified: svn:mergeinfo
## -0,0 +0,1 ##
   Merged /head:r359547,359629