Introduce a few c99 functions: {l,ll}{rint,round}{,f}. From NetBSD via

jason@. Man page fixes by jmc@, prodding by jsg@. ok mickey@

2 files changed, 201 insertions, 0 deletions

diff --git a/lib/libm/man/lrint.3 b/lib/libm/man/lrint.3
new file mode 100644
index 00000000000..e4a35609fe7
--- /dev/null
+++ b/lib/libm/man/lrint.3
@@ -0,0 +1,101 @@
+.\" 	$OpenBSD: lrint.3,v 1.1 2005/11/17 20:07:40 otto Exp $
+.\" $NetBSD: lrint.3,v 1.1 2005/09/16 15:26:47 wiz Exp $
+.\"
+.\" Copyright (c) 2005 David Schultz <das@FreeBSD.org>
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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: /repoman/r/ncvs/src/lib/msun/man/lrint.3,v 1.2.2.2 2005/03/01 16:18:39 brueffer Exp $
+.\"
+.Dd January 11, 2005
+.Dt LRINT 3
+.Os
+.Sh NAME
+.Nm llrint ,
+.Nm llrintf ,
+.Nm lrint ,
+.Nm lrintf
+.Nd convert to integer
+.Sh SYNOPSIS
+.In math.h
+.Ft long long
+.Fn llrint "double x"
+.Ft long long
+.Fn llrintf "float x"
+.Ft long
+.Fn lrint "double x"
+.Ft long
+.Fn lrintf "float x"
+.Sh DESCRIPTION
+The
+.Fn lrint
+function returns the integer nearest to its argument
+.Fa x
+according to the current rounding mode.
+.Pp
+The
+.Fn llrint ,
+.Fn llrintf ,
+and
+.Fn lrintf
+functions differ from
+.Fn lrint
+only in their input and output types.
+.Sh RETURN VALUES
+The
+.Nm llrint ,
+.Nm llrintf ,
+.Nm lrint ,
+and
+.Nm lrintf
+functions return the integer nearest to their argument
+.Fa x
+according to the current rounding mode.
+If the rounded result is too large to be represented as a
+.Vt long long
+or
+.Vt long
+value, respectively,
+.\" an invalid exception is raised and
+the return value is undefined.
+.\" Otherwise, if
+.\" .Fa x
+.\" is not an integer,
+.\" .Fn lrint
+.\" raises an inexact exception.
+.\" If
+.\" .Fa x
+.\" is too large, a range error may occur.
+.Sh SEE ALSO
+.Xr lround 3 ,
+.Xr math 3 ,
+.Xr rint 3
+.Sh STANDARDS
+The
+.Fn llrint ,
+.Fn llrintf ,
+.Fn lrint ,
+and
+.Fn lrintf
+functions conform to
+.St -isoC-99 .
diff --git a/lib/libm/man/lround.3 b/lib/libm/man/lround.3
new file mode 100644
index 00000000000..42dc24e472b
--- /dev/null
+++ b/lib/libm/man/lround.3
@@ -0,0 +1,100 @@
+.\" 	$OpenBSD: lround.3,v 1.1 2005/11/17 20:07:40 otto Exp $
+.\"
+.\" Copyright (c) 2005 David Schultz <das@FreeBSD.org>
+.\" 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.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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: /repoman/r/ncvs/src/lib/msun/man/lround.3,v 1.4 2005/06/15 19:04:04 ru Exp $
+.\"
+.Dd April 7, 2005
+.Dt LROUND 3
+.Os
+.Sh NAME
+.Nm llround ,
+.Nm llroundf ,
+.\" .Nm llroundl ,
+.Nm lround ,
+.Nm lroundf
+.\" .Nm lroundl
+.Nd "convert to nearest integral value"
+.Sh SYNOPSIS
+.In math.h
+.Ft "long long"
+.Fn llround "double x"
+.Ft "long long"
+.Fn llroundf "float x"
+.\" .Ft "long long"
+.\" .Fn llroundl "long double x"
+.Ft long
+.Fn lround "double x"
+.Ft long
+.Fn lroundf "float x"
+.\" .Ft long
+.\" .Fn lroundl "long double x"
+.Sh DESCRIPTION
+The
+.Fn lround
+function returns the integer nearest to its argument
+.Fa x ,
+rounding away from zero in halfway cases.
+If the rounded result is too large to be represented as a
+.Vt long
+value, an invalid exception is raised and the return value is undefined.
+Otherwise, if
+.Fa x
+is not an integer,
+.Fn lround
+may raise an inexact exception.
+When the rounded result is representable as a
+.Vt long ,
+the expression
+.Fn lround x
+is equivalent to
+.Po Vt long Pc Ns Fn round x
+(although the former may be more efficient).
+.Pp
+The
+.Fn llround ,
+.Fn llroundf ,
+.\" .Fn llroundl ,
+.\" .Fn lroundl
+and
+.Fn lroundf
+functions differ from
+.Fn lround
+only in their input and output types.
+.Sh SEE ALSO
+.Xr lrint 3 ,
+.Xr math 3 ,
+.Xr rint 3
+.Sh STANDARDS
+The
+.Fn llround ,
+.Fn llroundf ,
+.\" .Fn lroundl
+.\" .Fn llroundl ,
+.Fn lround ,
+and
+.Fn lroundf
+functions conform to
+.St -isoC-99 .