.\" Automatically generated by Pod::Man 2.25 (Pod::Simple 3.16)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is turned on, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.ie \nF \{\
.    de IX
.    tm Index:\\$1\t\\n%\t"\\$2"
..
.    nr % 0
.    rr F
.\}
.el \{\
.    de IX
..
.\}
.\"
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
.\" Fear.  Run.  Save yourself.  No user-serviceable parts.
.    \" fudge factors for nroff and troff
.if n \{\
.    ds #H 0
.    ds #V .8m
.    ds #F .3m
.    ds #[ \f1
.    ds #] \fP
.\}
.if t \{\
.    ds #H ((1u-(\\\\n(.fu%2u))*.13m)
.    ds #V .6m
.    ds #F 0
.    ds #[ \&
.    ds #] \&
.\}
.    \" simple accents for nroff and troff
.if n \{\
.    ds ' \&
.    ds ` \&
.    ds ^ \&
.    ds , \&
.    ds ~ ~
.    ds /
.\}
.if t \{\
.    ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
.    ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
.    ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
.    ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
.    ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
.    ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
.\}
.    \" troff and (daisy-wheel) nroff accents
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
.ds ae a\h'-(\w'a'u*4/10)'e
.ds Ae A\h'-(\w'A'u*4/10)'E
.    \" corrections for vroff
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
.    \" for low resolution devices (crt and lpr)
.if \n(.H>23 .if \n(.V>19 \
\{\
.    ds : e
.    ds 8 ss
.    ds o a
.    ds d- d\h'-1'\(ga
.    ds D- D\h'-1'\(hy
.    ds th \o'bp'
.    ds Th \o'LP'
.    ds ae ae
.    ds Ae AE
.\}
.rm #[ #] #H #V #F C
.\" ========================================================================
.\"
.IX Title "Math::Random::OO::Normal 3pm"
.TH Math::Random::OO::Normal 3pm "2013-06-09" "perl v5.14.2" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Math::Random::OO::Normal \- Generates random numbers from the normal (Gaussian) distribution
.SH "VERSION"
.IX Header "VERSION"
version 0.22
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 7
\&  use Math::Random::OO::Normal;
\&  push @prngs,
\&      Math::Random::OO::Normal\->new(),     # mean 0, stdev 1
\&      Math::Random::OO::Normal\->new(5),    # mean 5, stdev 1
\&      Math::Random::OO::Normal\->new(1,3);  # mean 1, stdev 3
\&  $_\->seed(42) for @prngs;
\&  print( $_\->next() . "\en" ) for @prngs;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This subclass of Math::Random::OO generates random reals from the normal 
probability distribution, also called the Gaussian or bell-curve distribution.
.PP
The module generates random normals from the inverse of the cumulative 
normal distribution using an approximation algorithm developed by Peter J. 
Acklam and released into the public domain.  This algorithm claims a
relative error of less than 1.15e\-9 over the entire region.
.PP
See http://home.online.no/~pjacklam/notes/invnorm/ for details and discussion.
.SH "METHODS"
.IX Header "METHODS"
.ie n .SS """new"""
.el .SS "\f(CWnew\fP"
.IX Subsection "new"
.Vb 3
\& $prng1 = Math::Random::OO::Normal\->new();
\& $prng2 = Math::Random::OO::Normal\->new($mean);
\& $prng3 = Math::Random::OO::Normal\->new($mean,$stdev);
.Ve
.PP
\&\f(CW\*(C`new\*(C'\fR takes up to two optional parameters and returns a new
\&\f(CW\*(C`Math::Random::OO::Normal\*(C'\fR object.  With no parameters, the object generates
random numbers from the standard normal distribution (mean zero, standard
deviation one).  With a single parameter, the object generates random numbers
with mean equal to the parameter and standard deviation of one.  With two
parameters, the object generates random numbers with mean equal to the first
parameter and standard deviation equal to the second parameter.  (Standard
deviation should be positive, but this module takes the absolute value of the
parameter just in case.)
.ie n .SS """seed"""
.el .SS "\f(CWseed\fP"
.IX Subsection "seed"
.Vb 1
\& $rv = $prng\->seed( @seeds );
.Ve
.PP
This method seeds the random number generator.  At the moment, only the
first seed value matters.  It should be a positive integer.
.ie n .SS """next"""
.el .SS "\f(CWnext\fP"
.IX Subsection "next"
.Vb 1
\& $rnd = $prng\->next();
.Ve
.PP
This method returns the next random number from the random number generator.
It does not take any parameters.
.SH "AUTHOR"
.IX Header "AUTHOR"
David Golden <dagolden@cpan.org>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This software is Copyright (c) 2013 by David Golden.
.PP
This is free software, licensed under:
.PP
.Vb 1
\&  The Apache License, Version 2.0, January 2004
.Ve