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@

5 files changed, 240 insertions, 90 deletions

diff --git a/lib/libm/Makefile b/lib/libm/Makefile
index 7cbb9492153..cbd7c5a80a8 100644
--- a/lib/libm/Makefile
+++ b/lib/libm/Makefile
@@ -1,4 +1,4 @@
-#  $OpenBSD: Makefile,v 1.69 2009/07/28 16:14:11 martynas Exp $
+#  $OpenBSD: Makefile,v 1.70 2009/07/29 18:43:28 martynas Exp $
 #  $NetBSD: Makefile,v 1.28 1995/11/20 22:06:19 jtc Exp $
 #
 #  @(#)Makefile 5.1beta 93/09/24 
@@ -163,16 +163,16 @@ SRCS+=		${LONG_SRCS}
 .endif
 
 MAN+=	acos.3 acosh.3 asin.3 asinh.3 atan.3 atan2.3 atanh.3 ceil.3 \
-	cos.3 cosh.3 erf.3 exp.3 fabs.3 floor.3 fmod.3 hypot.3 ieee.3 \
+	cos.3 cosh.3 erf.3 exp.3 fabs.3 floor.3 fmod.3 hypot.3 \
 	logb.3 j0.3 lgamma.3 lrint.3 lround.3 math.3 nan.3 remainder.3 \
-	rint.3 round.3 sin.3 sinh.3 sqrt.3 tan.3 tanh.3 trunc.3
+	rint.3 round.3 sin.3 sinh.3 sqrt.3 tan.3 tanh.3 trunc.3 \
+	copysign.3 ilogb.3 nextafter.3 scalbn.3
 
 MLINKS+=erf.3 erfc.3
 MLINKS+=exp.3 exp2.3 exp.3 expm1.3 exp.3 log.3 exp.3 log10.3 exp.3 log1p.3 \
 	exp.3 pow.3
 MLINKS+=hypot.3 cabs.3
-MLINKS+=ieee.3 copysign.3 ieee.3 ilogb.3 ieee.3 nextafter.3 ieee.3 scalbn.3
-MLINKS+=ieee.3 scalbln.3 ieee.3 scalblnf.3 ieee.3 scalblnl.3
+MLINKS+=scalbn.3 scalbln.3
 MLINKS+=logb.3 scalb.3
 MLINKS+=logb.3 significand.3
 MLINKS+=j0.3 j1.3 j0.3 jn.3 j0.3 y0.3 j0.3 y1.3 j0.3 yn.3
@@ -207,11 +207,11 @@ MLINKS+=floor.3 floorf.3
 MLINKS+=fmod.3 fmodf.3
 MLINKS+=hypot.3 cabsf.3
 MLINKS+=hypot.3 hypotf.3
-MLINKS+=ieee.3 copysignf.3
-MLINKS+=ieee.3 ieeef.3
-MLINKS+=ieee.3 ilogbf.3
-MLINKS+=ieee.3 nextafterf.3
-MLINKS+=ieee.3 scalbnf.3
+MLINKS+=copysign.3 copysignf.3
+MLINKS+=ilogb.3 ilogbf.3
+MLINKS+=nextafter.3 nextafterf.3
+MLINKS+=scalbn.3 scalbnf.3
+MLINKS+=scalbln.3 scalblnf.3
 MLINKS+=j0.3 j0f.3
 MLINKS+=j0.3 j1f.3
 MLINKS+=j0.3 jnf.3
@@ -251,9 +251,10 @@ MLINKS+=atan2.3 atan2l.3
 MLINKS+=cos.3 cosl.3
 MLINKS+=exp.3 exp2l.3
 MLINKS+=fabs.3 fabsl.3
-MLINKS+=ieee.3 copysignl.3
-MLINKS+=ieee.3 ilogbl.3
-MLINKS+=ieee.3 scalbnl.3
+MLINKS+=copysign.3 copysignl.3
+MLINKS+=ilogb.3 ilogbl.3
+MLINKS+=scalbn.3 scalbnl.3
+MLINKS+=scalbln.3 scalblnl.3
 MLINKS+=logb.3 logbl.3
 MLINKS+=nan.3 nanl.3
 MLINKS+=rint.3 rintl.3
diff --git a/lib/libm/man/copysign.3 b/lib/libm/man/copysign.3
new file mode 100644
index 00000000000..3a829d1275f
--- /dev/null
+++ b/lib/libm/man/copysign.3
@@ -0,0 +1,72 @@
+.\"	$OpenBSD: copysign.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 COPYSIGN 3
+.Os
+.Sh NAME
+.Nm copysign ,
+.Nm copysignf ,
+.Nm copysignl
+.Nd copy sign
+.Sh SYNOPSIS
+.Fd #include <math.h>
+.Ft double
+.Fn copysign "double x" "double y"
+.Ft float
+.Fn copysignf "float x" "float y"
+.Ft long double
+.Fn copysignl "long double x" "long double y"
+.Sh DESCRIPTION
+.Fn copysign
+returns
+.Fa x
+with its sign changed to
+.Fa y Ns 's.
+The
+.Fn copysignf
+function is a single precision version of
+.Fn copysign .
+The
+.Fn copysignl
+function is an extended precision version of
+.Fn copysign .
+.Sh SEE ALSO
+.Xr math 3
+.Sh STANDARDS
+.St -ieee754
+.Sh HISTORY
+The
+.Nm copysign ,
+.Nm copysignf ,
+and
+.Nm copysignl
+functions appeared in
+.Bx 4.3 .
diff --git a/lib/libm/man/ilogb.3 b/lib/libm/man/ilogb.3
new file mode 100644
index 00000000000..e460eac397d
--- /dev/null
+++ b/lib/libm/man/ilogb.3
@@ -0,0 +1,79 @@
+.\"	$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 .
diff --git a/lib/libm/man/nextafter.3 b/lib/libm/man/nextafter.3
new file mode 100644
index 00000000000..3237437e81f
--- /dev/null
+++ b/lib/libm/man/nextafter.3
@@ -0,0 +1,64 @@
+.\"	$OpenBSD: nextafter.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 NEXTAFTER 3
+.Os
+.Sh NAME
+.Nm nextafter ,
+.Nm nextafterf
+.Nd next representable value
+.Sh SYNOPSIS
+.Fd #include <math.h>
+.Ft double
+.Fn nextafter "double x" "double y"
+.Ft float
+.Fn nextafterf "float x" "float y"
+.Sh DESCRIPTION
+.Fn nextafter
+returns the next machine representable number from
+.Fa x
+in direction
+.Fa y .
+The
+.Fn nextafterf
+function is a single precision version of
+.Fn nextafter .
+.Sh SEE ALSO
+.Xr math 3
+.Sh STANDARDS
+.St -ieee754
+.Sh HISTORY
+The
+.Nm nextafter ,
+and
+.Nm nextafterf
+functions appeared in
+.Bx 4.3 .
diff --git a/lib/libm/man/ieee.3 b/lib/libm/man/scalbn.3
index e64487fc83c..e4e4e86e623 100644
--- a/lib/libm/man/ieee.3
+++ b/lib/libm/man/scalbn.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: ieee.3,v 1.18 2009/07/28 16:14:11 martynas Exp $
+.\"	$OpenBSD: scalbn.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.
 .\"
@@ -28,44 +28,20 @@
 .\"
 .\"     from: @(#)ieee.3	6.4 (Berkeley) 5/6/91
 .\"
-.Dd $Mdocdate: July 28 2009 $
-.Dt IEEE 3
+.Dd $Mdocdate: July 29 2009 $
+.Dt SCALBN 3
 .Os
 .Sh NAME
-.Nm copysign ,
-.Nm copysignf ,
-.Nm copysignl ,
-.Nm ilogb ,
-.Nm ilogbf ,
-.Nm ilogbl ,
-.Nm nextafter ,
-.Nm nextafterf ,
 .Nm scalbln ,
 .Nm scalblnf ,
 .Nm scalblnl ,
 .Nm scalbn ,
 .Nm scalbnf ,
 .Nm scalbnl
-.Nd functions for IEEE arithmetic
+.Nd adjust exponent by radix
 .Sh SYNOPSIS
 .Fd #include <math.h>
 .Ft double
-.Fn copysign "double x" "double y"
-.Ft float
-.Fn copysignf "float x" "float y"
-.Ft long double
-.Fn copysignl "long double x" "long double y"
-.Ft int
-.Fn ilogb "double x"
-.Ft int
-.Fn ilogbf "float x"
-.Ft int
-.Fn ilogbl "long double x"
-.Ft double
-.Fn nextafter "double x" "double y"
-.Ft float
-.Fn nextafterf "float x" "float y"
-.Ft double
 .Fn scalbln "double x" "long n"
 .Ft float
 .Fn scalblnf "float x" "long n"
@@ -78,54 +54,6 @@
 .Ft long double
 .Fn scalbnl "long double x" "int n"
 .Sh DESCRIPTION
-These functions are required or recommended by
-.St -ieee754 .
-.Pp
-.Fn copysign
-returns
-.Fa x
-with its sign changed to
-.Fa y Ns 's.
-The
-.Fn copysignf
-function is a single precision version of
-.Fn copysign .
-The
-.Fn copysignl
-function is an extended precision version of
-.Fn copysign .
-.Pp
-.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 .
-.Pp
-.Fn nextafter
-returns the next machine representable number from
-.Fa x
-in direction
-.Fa y .
-The
-.Fn nextafterf
-function is a single precision version of
-.Fn nextafter .
-.Pp
 .Fn scalbln
 and
 .Fn scalbn
@@ -156,6 +84,12 @@ respectively.
 .St -ieee754
 .Sh HISTORY
 The
-.Nm ieee
+.Nm scalbln ,
+.Nm scalblnf ,
+.Nm scalblnl ,
+.Nm scalbn ,
+.Nm scalbnf ,
+and
+.Nm scalbnl ,
 functions appeared in
 .Bx 4.3 .