1 #ifndef STAN_MATH_PRIM_MAT_ERR_CHECK_POSITIVE_ORDERED_HPP
2 #define STAN_MATH_PRIM_MAT_ERR_CHECK_POSITIVE_ORDERED_HPP
3
4 #include <stan/math/prim/scal/err/domain_error.hpp>
5 #include <stan/math/prim/mat/err/check_ordered.hpp>
6 #include <stan/math/prim/mat/fun/Eigen.hpp>
7 #include <stan/math/prim/mat/meta/index_type.hpp>
8 #include <sstream>
9 #include <string>
10
11 namespace stan {
12 namespace math {
13
14 /**
15 * Check if the specified vector contains
16 * non-negative values and is sorted into strictly increasing
17 * order.
18 *
19 * @param function Function name (for error messages)
20 * @param name Variable name (for error messages)
21 * @param y Vector to test
22 *
23 * @throw <code>std::domain_error</code> if the vector contains non-positive
24 * values, if the values are not ordered, if there are duplicated
25 * values, or if any element is <code>NaN</code>.
26 */
27 template <typename T_y>
check_positive_ordered(const char * function,const char * name,const Eigen::Matrix<T_y,Eigen::Dynamic,1> & y)28 void check_positive_ordered(const char* function, const char* name,
29 const Eigen::Matrix<T_y, Eigen::Dynamic, 1>& y) {
30 using Eigen::Dynamic;
31 using Eigen::Matrix;
32
33 if (y.size() == 0)
34 return;
35
36 if (y[0] < 0) {
37 std::ostringstream msg;
38 msg << "is not a valid positive_ordered vector."
39 << " The element at " << stan::error_index::value << " is ";
40 std::string msg_str(msg.str());
41 domain_error(function, name, y[0], msg_str.c_str(),
42 ", but should be postive.");
43 }
44 check_ordered(function, name, y);
45 }
46 } // namespace math
47 } // namespace stan
48 #endif
49