ieee, and ieeef aren't real, and the amount of functions it documents

is getting ridiculous.  split them into groups of copysign, ilogb,
nextafter, scalbn.  discussed long ago with millert@

1 files changed, 79 insertions, 0 deletions

diff --git a/lib/libm/man/ilogb.3 b/lib/libm/man/ilogb.3
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+.\"	$OpenBSD: ilogb.3,v 1.1 2009/07/29 18:43:29 martynas Exp $
+.\" 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: @(#)ieee.3	6.4 (Berkeley) 5/6/91
+.\"
+.Dd $Mdocdate: July 29 2009 $
+.Dt ILOGB 3
+.Os
+.Sh NAME
+.Nm ilogb ,
+.Nm ilogbf ,
+.Nm ilogbl
+.Nd extract exponent
+.Sh SYNOPSIS
+.Fd #include <math.h>
+.Ft int
+.Fn ilogb "double x"
+.Ft int
+.Fn ilogbf "float x"
+.Ft int
+.Fn ilogbl "long double x"
+.Sh DESCRIPTION
+.Fn ilogb
+returns
+.Fa x Ns 's exponent
+.Fa n ,
+in integer format.
+.Fn ilogb \*(Pm\*(If
+returns
+.Dv INT_MAX
+and
+.Fn ilogb 0
+returns
+.Dv INT_MIN .
+The
+.Fn ilogbf
+function is a single precision version of
+.Fn ilogb .
+The
+.Fn ilogbl
+function is an extended precision version of
+.Fn ilogb .
+.Sh SEE ALSO
+.Xr math 3
+.Sh STANDARDS
+.St -ieee754
+.Sh HISTORY
+The
+.Nm ilogb ,
+.Nm ilogbf ,
+and
+.Nm ilogbl
+functions appeared in
+.Bx 4.3 .