Stan Math Library  2.14.0
reverse mode automatic differentiation
erf.hpp
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1 #ifndef STAN_MATH_PRIM_SCAL_FUN_ERF_HPP
2 #define STAN_MATH_PRIM_SCAL_FUN_ERF_HPP
3 
6 #include <boost/math/special_functions/erf.hpp>
7 #include <limits>
8 
9 namespace stan {
10  namespace math {
11 
22  inline double erf(double x) {
23  if (is_nan(x))
24  return std::numeric_limits<double>::quiet_NaN();
25  return boost::math::erf(x, boost_policy_t());
26  }
27 
35  inline double erf(int x) {
36  return erf(static_cast<double>(x));
37  }
38 
39  }
40 }
41 #endif
var erf(const var &a)
The error function for variables (C99).
Definition: erf.hpp:60
fvar< T > erf(const fvar< T > &x)
Definition: erf.hpp:14
boost::math::policies::policy< boost::math::policies::overflow_error< boost::math::policies::errno_on_error >, boost::math::policies::pole_error< boost::math::policies::errno_on_error > > boost_policy_t
Boost policy that overrides the defaults to match the built-in C++ standard library functions...
int is_nan(const fvar< T > &x)
Returns 1 if the input&#39;s value is NaN and 0 otherwise.
Definition: is_nan.hpp:21

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