is_nonpositive_integer.hpp

Go to the documentation of this file.

#ifndef STAN_MATH_PRIM_FUN_IS_NONPOSITIVE_INTEGER_HPP
#define STAN_MATH_PRIM_FUN_IS_NONPOSITIVE_INTEGER_HPP
 
#include <stan/math/prim/meta.hpp>
#include <stan/math/prim/fun/floor.hpp>
#include <cmath>
 
namespace stan {
namespace math {
 
template <typename T>
inline bool is_nonpositive_integer(T x) {
  using std::floor;
  return x <= 0.0 && floor(x) == x;
}
 
}  // namespace math
}  // namespace stan
 
#endif