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Annotation of mandoc/regress/roff/if/close-rules.in, Revision 1.1

1.1     ! kristaps    1: .\" Copyright (c) 1985, 1991 Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms, with or without
        !             5: .\" modification, are permitted provided that the following conditions
        !             6: .\" are met:
        !             7: .\" 1. Redistributions of source code must retain the above copyright
        !             8: .\"    notice, this list of conditions and the following disclaimer.
        !             9: .\" 2. Redistributions in binary form must reproduce the above copyright
        !            10: .\"    notice, this list of conditions and the following disclaimer in the
        !            11: .\"    documentation and/or other materials provided with the distribution.
        !            12: .\" 4. Neither the name of the University nor the names of its contributors
        !            13: .\"    may be used to endorse or promote products derived from this software
        !            14: .\"    without specific prior written permission.
        !            15: .\"
        !            16: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            17: .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            18: .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            19: .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            20: .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            21: .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            22: .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            23: .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            24: .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            25: .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            26: .\" SUCH DAMAGE.
        !            27: .\"
        !            28: .\"     from: @(#)erf.3        6.4 (Berkeley) 4/20/91
        !            29: .\" $FreeBSD$
        !            30: .\"
        !            31: .Dd April 20, 1991
        !            32: .Dt ERF 3
        !            33: .Os
        !            34: .Sh NAME
        !            35: .Nm erf ,
        !            36: .Nm erff ,
        !            37: .Nm erfc ,
        !            38: .Nm erfcf
        !            39: .Nd error function operators
        !            40: .Sh LIBRARY
        !            41: .Lb libm
        !            42: .Sh SYNOPSIS
        !            43: .In math.h
        !            44: .Ft double
        !            45: .Fn erf "double x"
        !            46: .Ft float
        !            47: .Fn erff "float x"
        !            48: .Ft double
        !            49: .Fn erfc "double x"
        !            50: .Ft float
        !            51: .Fn erfcf "float x"
        !            52: .Sh DESCRIPTION
        !            53: These functions calculate the error function of
        !            54: .Fa x .
        !            55: .Pp
        !            56: The
        !            57: .Fn erf
        !            58: and the
        !            59: .Fn erff
        !            60: functions calculate the error function of x; where
        !            61: .Bd -ragged -offset indent
        !            62: .if n \{\
        !            63: erf(x) = 2/sqrt(pi)\(**\|integral from 0 to x of exp(\-t\(**t) dt.
        !            64: 1234 \} asdf
        !            65: 1234 \} asdf
        !            66: .if t \{\
        !            67: erf\|(x) :=
        !            68: (2/\(sr\(*p)\|\(is\d\s8\z0\s10\u\u\s8x\s10\d\|exp(\-t\u\s82\s10\d)\|dt.
        !            69: 4321 \} fdsa
        !            70: 4321 \} fdsa
        !            71: .Ed
        !            72: .Pp
        !            73: The
        !            74: .Fn erfc
        !            75: and the
        !            76: .Fn erfcf
        !            77: functions calculate the complementary error function of
        !            78: .Fa x ;
        !            79: that is
        !            80: .Fn erfc
        !            81: subtracts the result of the error function
        !            82: .Fn erf x
        !            83: from 1.0.
        !            84: This is useful, since for large
        !            85: .Fa x
        !            86: places disappear.
        !            87: .Sh SEE ALSO
        !            88: .Xr math 3
        !            89: .Sh HISTORY
        !            90: The
        !            91: .Fn erf
        !            92: and
        !            93: .Fn erfc
        !            94: functions appeared in
        !            95: .Bx 4.3 .