/** * C++ version of gsl_sf_fermi_dirac_inc_0(). * Incomplete integral F_0(x,b) = ln(1 + e^(b-x)) - (b-x) * @param x A real number * @param b A real number * @return The function value */ inline double fermi_dirac_inc_0( double const x, double const b ){ return gsl_sf_fermi_dirac_inc_0( x, b );}
static VALUE rb_gsl_sf_fermi_dirac_inc_0(VALUE obj, VALUE x, VALUE b) { return rb_float_new(gsl_sf_fermi_dirac_inc_0(NUM2DBL(x), NUM2DBL(b))); }