// [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);   // [5.2.1.7] 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);   // [5.2.1.8] 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);   // [5.2.1.17] 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);   // [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);   } // namespace tr1   } // namespace std[*Standard Conformity:]The following functions are not supported in the Boost version of this component:   // [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);[endsect][section:c99_special C99 Mathematical Special Functions.]The TR adds a number of special functions which were first introduced in the C99 standardto header <cmath>.Refer to the [@../../libs/math/doc/sf_and_dist/html/math_toolkit/main_overview/tr1.html Math Library docs] for more information.        namespace std {   namespace tr1 {         // types      typedef floating-type double_t;      typedef floating-type float_t;      // functions      double acosh(double x);      float acoshf(float x);      long double acoshl(long double x);      double asinh(double x);      float asinhf(float x);      long double asinhl(long double x);      double atanh(double x);      float atanhf(float x);      long double atanhl(long double x);      double cbrt(double x);      float cbrtf(float x);      long double cbrtl(long double x);      double copysign(double x, double y);      float copysignf(float x, float y);      long double copysignl(long double x, long double y);      double erf(double x);      float erff(float x);      long double erfl(long double x);      double erfc(double x);      float erfcf(float x);      long double erfcl(long double x);      double exp2(double x);      float exp2f(float x);      long double exp2l(long double x);      double expm1(double x);      float expm1f(float x);      long double expm1l(long double x);      double fdim(double x, double y);      float fdimf(float x, float y);      long double fdiml(long double x, long double y);      double fma(double x, double y, double z);      float fmaf(float x, float y, float z);      long double fmal(long double x, long double y, long double z);      double fmax(double x, double y);      float fmaxf(float x, float y);      long double fmaxl(long double x, long double y);      double fmin(double x, double y);      float fminf(float x, float y);      long double fminl(long double x, long double y);      double hypot(double x, double y);      float hypotf(float x, float y);      long double hypotl(long double x, long double y);      int ilogb(double x);      int ilogbf(float x);      int ilogbl(long double x);      double lgamma(double x);      float lgammaf(float x);      long double lgammal(long double x);      long long llrint(double x);      long long llrintf(float x);      long long llrintl(long double x);      long long llround(double x);      long long llroundf(float x);      long long llroundl(long double x);      double log1p(double x);      float log1pf(float x);      long double log1pl(long double x);      double log2(double x);      float log2f(float x);      long double log2l(long double x);      double logb(double x);      float logbf(float x);      long double logbl(long double x);      long lrint(double x);      long lrintf(float x);      long lrintl(long double x);      long lround(double x);      long lroundf(float x);      long lroundl(long double x);      double nan(const char *str);      float nanf(const char *str);      long double nanl(const char *str);      double nearbyint(double x);      float nearbyintf(float x);      long double nearbyintl(long double x);      double nextafter(double x, double y);      float nextafterf(float x, float y);      long double nextafterl(long double x, long double y);      double nexttoward(double x, long double y);      float nexttowardf(float x, long double y);      long double nexttowardl(long double x, long double y);      double remainder(double x, double y);      float remainderf(float x, float y);      long double remainderl(long double x, long double y);      double remquo(double x, double y, int *pquo);      float remquof(float x, float y, int *pquo);      long double remquol(long double x, long double y, int *pquo);      double rint(double x);      float rintf(float x);      long double rintl(long double x);      double round(double x);      float roundf(float x);      long double roundl(long double x);      double scalbln(double x, long ex);      float scalblnf(float x, long ex);      long double scalblnl(long double x, long ex);      double scalbn(double x, int ex);      float scalbnf(float x, int ex);      long double scalbnl(long double x, int ex);      double tgamma(double x);      float tgammaf(float x);      long double tgammal(long double x);      double trunc(double x);      float truncf(float x);      long double truncl(long double x);      // C99 macros defined as C++ templates      template<class T> bool signbit(T x);      template<class T> int fpclassify(T x);      template<class T> bool isfinite(T x);      template<class T> bool isinf(T x);      template<class T> bool isnan(T x);      template<class T> bool isnormal(T x);      template<class T> bool isgreater(T x, T y);      template<class T> bool isgreaterequal(T x, T y);      template<class T> bool isless(T x, T y);      template<class T> bool islessequal(T x, T y);      template<class T> bool islessgreater(T x, T y);      template<class T> bool isunordered(T x, T y);   }} // namespaces[*Standard Conformity:]The following functions are not supported in the Boost version of this component:      double exp2(double x);      float exp2f(float x);      long double exp2l(long double x);      double fdim(double x, double y);      float fdimf(float x, float y);      long double fdiml(long double x, long double y);      double fma(double x, double y, double z);      float fmaf(float x, float y, float z);      long double fmal(long double x, long double y, long double z);      int ilogb(double x);      int ilogbf(float x);      int ilogbl(long double x);      long long llrint(double x);      long long llrintf(float x);      long long llrintl(long double x);      double log2(double x);      float log2f(float x);      long double log2l(long double x);      double logb(double x);      float logbf(float x);      long double logbl(long double x);      long lrint(double x);      long lrintf(float x);      long lrintl(long double x);      double nan(const char *str);      float nanf(const char *str);      long double nanl(const char *str);      double nearbyint(double x);      float nearbyintf(float x);      long double nearbyintl(long double x);      double remainder(double x, double y);      float remainderf(float x, float y);      long double remainderl(long double x, long double y);      double remquo(double x, double y, int *pquo);      float remquof(float x, float y, int *pquo);      long double remquol(long double x, long double y, int *pquo);      double rint(double x);      float rintf(float x);      long double rintl(long double x);      double scalbln(double x, long ex);      float scalblnf(float x, long ex);      long double scalblnl(long double x, long ex);      double scalbn(double x, int ex);      float scalbnf(float x, int ex);      long double scalbnl(long double x, int ex);      // C99 macros defined as C++ templates      template<class T> bool isgreater(T x, T y);      template<class T> bool isgreaterequal(T x, T y);