STK_Const_Math.h

Go to the documentation of this file.

/*--------------------------------------------------------------------*/
/*     Copyright (C) 2004-2016  Serge Iovleff, Université Lille 1, Inria
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
    License along with this program; if not, write to the
    Free Software Foundation, Inc.,
    59 Temple Place,
    Suite 330,
    Boston, MA 02111-1307
    USA
 
    Contact : S..._Dot_I..._At_stkpp_Dot_org (see copyright for ...)
*/
 
/*
 * Project:  stkpp::STatistiK::Analysis
 * Purpose:  Main mathematical constants
 * Author:   Serge Iovleff, S..._Dot_I..._At_stkpp_Dot_org (see copyright for ...)
 *
 **/
 
#ifndef STK_CONST_MATH_H
#define STK_CONST_MATH_H
 
#include <STKernel.h>
 
namespace STK
{
 
namespace Const
{
static const Real _E_          = 2.718281828459045235360287471353;
static const Real _PI_         = 3.141592653589793238462643383279502884197169399375;
static const Real _EULER_      = 0.57721566490153286060651209008240243104215933594;
static const Real _2PI_        = 6.283185307179586476925286766559;
static const Real _PI_2_       = 1.570796326794896619231321691640;
static const Real _PI_4_       = 0.785398163397448309615660845820;
static const Real _1_PI        = 0.318309886183790671537767526745;
static const Real _2_PI_       = 0.636619772367581343075535053490;
static const Real _LOG2_       = 0.301029995663981195213738894724;
static const Real _LOGE_       = 0.434294481903251827651128918917;
static const Real _LN2_        = 0.693147180559945309417232121458;
static const Real _LN10_       = 2.302585092994045684017991454684;
static const Real _SQRT2_      = 1.414213562373095048801688724210;
static const Real _SQRT3_      = 1.732050807568877293527446341506;
static const Real _SQRT32_     = 5.656854249492380195206754896838;
static const Real _1_SQRT2_    = 0.707106781186547524400844362105;
static const Real _SQRTPI_     = 1.772453850905516027298167483341;
static const Real _SQRT2_PI_   = 0.797884560802865355879892119869;
static const Real _SQRT2PI_    = 2.506628274631000502415765284811045253007;
static const Real _1_SQRTPI_   = 0.564189583547756286948079451561;
static const Real _2_SQRTPI_   = 1.128379167095512573896158903122;
static const Real _1_SQRT2PI_  = 0.398942280401432677939946059934;
static const Real _LNSQRTPI_   = 0.572364942924700087071713675677;
static const Real _LNSQRT2PI_  = 0.918938533204672741780329736406;
static const Real _LNSQRTPI_2_ = 0.225791352644727432363097614947;
 
Real pi();
 
inline Real pi_2() { return pi()/2.0;}
 
Real euler();
 
} // namespace Const
 
} // namespace STK
 
#endif // STK_CONSTMATH_H