[section:tr1_ref TR1 C Functions Quick Reference]


[h4 Supported TR1 Functions]

   namespace boost{ namespace math{ namespace tr1{ extern "C"{
      
   // [5.2.1.1] associated Laguerre polynomials:
   double assoc_laguerre(unsigned n, unsigned m, double x);
   float assoc_laguerref(unsigned n, unsigned m, float x);
   long double assoc_laguerrel(unsigned n, unsigned m, long double x);

   // [5.2.1.2] associated Legendre functions:
   double assoc_legendre(unsigned l, unsigned m, double x);
   float assoc_legendref(unsigned l, unsigned m, float x);
   long double assoc_legendrel(unsigned l, unsigned m, long double x);

   // [5.2.1.3] beta function:
   double beta(double x, double y);
   float betaf(float x, float y);
   long double betal(long double x, long double y);

   // [5.2.1.4] (complete) elliptic integral of the first kind:
   double comp_ellint_1(double k);
   float comp_ellint_1f(float k);
   long double comp_ellint_1l(long double k);

   // [5.2.1.5] (complete) elliptic integral of the second kind:
   double comp_ellint_2(double k);
   float comp_ellint_2f(float k);
   long double comp_ellint_2l(long double k);

   // [5.2.1.6] (complete) elliptic integral of the third kind:
   double comp_ellint_3(double k, double nu);
   float comp_ellint_3f(float k, float nu);
   long double comp_ellint_3l(long double k, long double nu);

   // [5.2.1.8] regular modified cylindrical Bessel functions:
   double cyl_bessel_i(double nu, double x);
   float cyl_bessel_if(float nu, float x);
   long double cyl_bessel_il(long double nu, long double x);

   // [5.2.1.9] cylindrical Bessel functions (of the first kind):
   double cyl_bessel_j(double nu, double x);
   float cyl_bessel_jf(float nu, float x);
   long double cyl_bessel_jl(long double nu, long double x);

   // [5.2.1.10] irregular modified cylindrical Bessel functions:
   double cyl_bessel_k(double nu, double x);
   float cyl_bessel_kf(float nu, float x);
   long double cyl_bessel_kl(long double nu, long double x);

   // [5.2.1.11] cylindrical Neumann functions;
   // cylindrical Bessel functions (of the second kind):
   double cyl_neumann(double nu, double x);
   float cyl_neumannf(float nu, float x);
   long double cyl_neumannl(long double nu, long double x);

   // [5.2.1.12] (incomplete) elliptic integral of the first kind:
   double ellint_1(double k, double phi);
   float ellint_1f(float k, float phi);
   long double ellint_1l(long double k, long double phi);

   // [5.2.1.13] (incomplete) elliptic integral of the second kind:
   double ellint_2(double k, double phi);
   float ellint_2f(float k, float phi);
   long double ellint_2l(long double k, long double phi);

   // [5.2.1.14] (incomplete) elliptic integral of the third kind:
   double ellint_3(double k, double nu, double phi);
   float ellint_3f(float k, float nu, float phi);
   long double ellint_3l(long double k, long double nu, long double phi);

   // [5.2.1.15] exponential integral:
   double expint(double x);
   float expintf(float x);
   long double expintl(long double x);

   // [5.2.1.16] Hermite polynomials:
   double hermite(unsigned n, double x);
   float hermitef(unsigned n, float x);
   long double hermitel(unsigned n, long double x);

   // [5.2.1.18] Laguerre polynomials:
   double laguerre(unsigned n, double x);
   float laguerref(unsigned n, float x);
   long double laguerrel(unsigned n, long double x);

   // [5.2.1.19] Legendre polynomials:
   double legendre(unsigned l, double x);
   float legendref(unsigned l, float x);
   long double legendrel(unsigned l, long double x);

   // [5.2.1.20] Riemann zeta function:
   double riemann_zeta(double);
   float riemann_zetaf(float);
   long double riemann_zetal(long double);

   // [5.2.1.21] spherical Bessel functions (of the first kind):
   double sph_bessel(unsigned n, double x);
   float sph_besself(unsigned n, float x);
   long double sph_bessell(unsigned n, long double x);

   // [5.2.1.22] spherical associated Legendre functions:
   double sph_legendre(unsigned l, unsigned m, double theta);
   float sph_legendref(unsigned l, unsigned m, float theta);
   long double sph_legendrel(unsigned l, unsigned m, long double theta);

   // [5.2.1.23] spherical Neumann functions;
   // spherical Bessel functions (of the second kind):
   double sph_neumann(unsigned n, double x);
   float sph_neumannf(unsigned n, float x);
   long double sph_neumannl(unsigned n, long double x);
   
   }}}} // namespaces
   
In addition sufficient additional overloads of the `double` versions of the
above functions are provided, so that calling the function with any mixture
of `float`, `double`, `long double`, or /integer/ arguments is supported, with the
return type determined by the __arg_pomotion_rules.
   
For example:

   expintf(2.0f);  // float version, returns float.
   expint(2.0f);   // also calls the float version and returns float.
   expint(2.0);    // double version, returns double.
   expintl(2.0L);  // long double version, returns a long double.
   expint(2.0L);   // also calls the long double version.
   expint(2);      // integer argument is treated as a double, returns double.

[h4 Quick Reference]

   // [5.2.1.1] associated Laguerre polynomials:
   double assoc_laguerre(unsigned n, unsigned m, double x);
   float assoc_laguerref(unsigned n, unsigned m, float x);
   long double assoc_laguerrel(unsigned n, unsigned m, long double x);
   
The assoc_laguerre functions return:

[equation laguerre_1]

See also __laguerre for the full template (header only) version of this function.

   // [5.2.1.2] associated Legendre functions:
   double assoc_legendre(unsigned l, unsigned m, double x);
   float assoc_legendref(unsigned l, unsigned m, float x);
   long double assoc_legendrel(unsigned l, unsigned m, long double x);

The assoc_legendre functions return:

[equation legendre_1b]

See also __legendre for the full template (header only) version of this function.

   // [5.2.1.3] beta function:
   double beta(double x, double y);
   float betaf(float x, float y);
   long double betal(long double x, long double y);
   
Returns the beta function of /x/ and /y/:

[equation beta1]

See also __beta for the full template (header only) version of this function.

   // [5.2.1.4] (complete) elliptic integral of the first kind:
   double comp_ellint_1(double k);
   float comp_ellint_1f(float k);
   long double comp_ellint_1l(long double k);

Returns the complete elliptic integral of the first kind of /k/:

[equation ellint6]

See also __ellint_1 for the full template (header only) version of this function.

   // [5.2.1.5] (complete) elliptic integral of the second kind:
   double comp_ellint_2(double k);
   float comp_ellint_2f(float k);
   long double comp_ellint_2l(long double k);

Returns the complete elliptic integral of the second kind of /k/:

[equation ellint7]

See also __ellint_2 for the full template (header only) version of this function.

   // [5.2.1.6] (complete) elliptic integral of the third kind:
   double comp_ellint_3(double k, double nu);
   float comp_ellint_3f(float k, float nu);
   long double comp_ellint_3l(long double k, long double nu);

Returns the complete elliptic integral of the third kind of /k/ and /nu/:

[equation ellint8]

See also __ellint_3 for the full template (header only) version of this function.

   // [5.2.1.8] regular modified cylindrical Bessel functions:
   double cyl_bessel_i(double nu, double x);
   float cyl_bessel_if(float nu, float x);
   long double cyl_bessel_il(long double nu, long double x);

Returns the modified bessel function of the first kind of /nu/ and /x/:

[equation mbessel2]

See also __cyl_bessel_i for the full template (header only) version of this function.

   // [5.2.1.9] cylindrical Bessel functions (of the first kind):
   double cyl_bessel_j(double nu, double x);
   float cyl_bessel_jf(float nu, float x);
   long double cyl_bessel_jl(long double nu, long double x);

Returns the bessel function of the first kind of /nu/ and /x/:

[equation bessel2]

See also __cyl_bessel_j for the full template (header only) version of this function.

   // [5.2.1.10] irregular modified cylindrical Bessel functions:
   double cyl_bessel_k(double nu, double x);
   float cyl_bessel_kf(float nu, float x);
   long double cyl_bessel_kl(long double nu, long double x);

Returns the modified bessel function of the second kind of /nu/ and /x/:

[equation mbessel3]

See also __cyl_bessel_k for the full template (header only) version of this function.

   // [5.2.1.11] cylindrical Neumann functions;
   // cylindrical Bessel functions (of the second kind):
   double cyl_neumann(double nu, double x);
   float cyl_neumannf(float nu, float x);
   long double cyl_neumannl(long double nu, long double x);

Returns the bessel function of the second kind (Neumann function) of /nu/ and /x/:

[equation bessel3]

See also __cyl_neumann for the full template (header only) version of this function.

   // [5.2.1.12] (incomplete) elliptic integral of the first kind:
   double ellint_1(double k, double phi);
   float ellint_1f(float k, float phi);
   long double ellint_1l(long double k, long double phi);

Returns the incomplete elliptic integral of the first kind of /k/ and /phi/:

[equation ellint2]

See also __ellint_1 for the full template (header only) version of this function.

   // [5.2.1.13] (incomplete) elliptic integral of the second kind:
   double ellint_2(double k, double phi);
   float ellint_2f(float k, float phi);
   long double ellint_2l(long double k, long double phi);

Returns the incomplete elliptic integral of the second kind of /k/ and /phi/:

[equation ellint3]

See also __ellint_2 for the full template (header only) version of this function.

   // [5.2.1.14] (incomplete) elliptic integral of the third kind:
   double ellint_3(double k, double nu, double phi);
   float ellint_3f(float k, float nu, float phi);
   long double ellint_3l(long double k, long double nu, long double phi);

Returns the incomplete elliptic integral of the third kind of /k/, /nu/ and /phi/:

[equation ellint4]

See also __ellint_3 for the full template (header only) version of this function.

   // [5.2.1.15] exponential integral:
   double expint(double x);
   float expintf(float x);
   long double expintl(long double x);

Returns the exponential integral Ei of /x/:

[equation expint_i_1]

See also __expint for the full template (header only) version of this function.

   // [5.2.1.16] Hermite polynomials:
   double hermite(unsigned n, double x);
   float hermitef(unsigned n, float x);
   long double hermitel(unsigned n, long double x);

Returns the n'th Hermite polynomial of /x/:

[equation hermite_0]

See also __hermite for the full template (header only) version of this function.

   // [5.2.1.18] Laguerre polynomials:
   double laguerre(unsigned n, double x);
   float laguerref(unsigned n, float x);
   long double laguerrel(unsigned n, long double x);

Returns the n'th Laguerre polynomial of /x/:

[equation laguerre_0]

See also __laguerre for the full template (header only) version of this function.

   // [5.2.1.19] Legendre polynomials:
   double legendre(unsigned l, double x);
   float legendref(unsigned l, float x);
   long double legendrel(unsigned l, long double x);

Returns the l'th Legendre polynomial of /x/:

[equation legendre_0]

See also __legendre for the full template (header only) version of this function.

   // [5.2.1.20] Riemann zeta function:
   double riemann_zeta(double);
   float riemann_zetaf(float);
   long double riemann_zetal(long double);

Returns the Riemann Zeta function of /x/:

[equation zeta1]

See also __zeta for the full template (header only) version of this function.

   // [5.2.1.21] spherical Bessel functions (of the first kind):
   double sph_bessel(unsigned n, double x);
   float sph_besself(unsigned n, float x);
   long double sph_bessell(unsigned n, long double x);

Returns the spherical Bessel function of the first kind of /x/ j[sub n](x):

[equation sbessel2]

See also __sph_bessel for the full template (header only) version of this function.

   // [5.2.1.22] spherical associated Legendre functions:
   double sph_legendre(unsigned l, unsigned m, double theta);
   float sph_legendref(unsigned l, unsigned m, float theta);
   long double sph_legendrel(unsigned l, unsigned m, long double theta);
   
Returns the spherical associated Legendre function of /l/, /m/ and /theta/:

[equation spherical_3]

See also __spherical_harmonic for the full template (header only) version of this function.

   // [5.2.1.23] spherical Neumann functions;
   // spherical Bessel functions (of the second kind):
   double sph_neumann(unsigned n, double x);
   float sph_neumannf(unsigned n, float x);
   long double sph_neumannl(unsigned n, long double x);

Returns the spherical Neumann function of /x/ y[sub n](x):

[equation sbessel2]

See also __sph_bessel for the full template (header only) version of this function.


[h4 Currently Unsupported TR1 Functions]

   // [5.2.1.7] confluent hypergeometric functions:
   double conf_hyperg(double a, double c, double x);
   float conf_hypergf(float a, float c, float x);
   long double conf_hypergl(long double a, long double c, long double x);

   // [5.2.1.17] hypergeometric functions:
   double hyperg(double a, double b, double c, double x);
   float hypergf(float a, float b, float c, float x);
   long double hypergl(long double a, long double b, long double c,
   long double x);
   
[note These two functions are not implemented as they are not believed
to be numerically stable.]


[endsect]

[/ 
  Copyright 2008, 2009 John Maddock and Paul A. Bristow.
  Distributed under the Boost Software License, Version 1.0.
  (See accompanying file LICENSE_1_0.txt or copy at
  http://www.boost.org/LICENSE_1_0.txt).
]