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check_ordered.hpp
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1 #ifndef STAN_MATH_PRIM_MAT_ERR_CHECK_ORDERED_HPP
2 #define STAN_MATH_PRIM_MAT_ERR_CHECK_ORDERED_HPP
3
4 #include <stan/math/prim/mat/fun/Eigen.hpp>
5 #include <stan/math/prim/mat/meta/index_type.hpp>
6 #include <stan/math/prim/scal/err/domain_error.hpp>
7 #include <stan/math/prim/scal/meta/error_index.hpp>
8 #include <sstream>
9 #include <string>
10 #include <vector>
11
12 namespace stan {
13 namespace math {
14
30 template <typename T_y>
31 bool check_ordered(const char* function,
32 const char* name,
33 const Eigen::Matrix<T_y, Eigen::Dynamic, 1>& y) {
34 using Eigen::Dynamic;
35 using Eigen::Matrix;
36
37 typedef typename index_type<Matrix<T_y, Dynamic, 1> >::type size_t;
38
39 if (y.size() == 0)
40 return true;
41
42 for (size_t n = 1; n < y.size(); n++) {
43 if (!(y[n] > y[n-1])) {
44 std::ostringstream msg1;
45 msg1 << "is not a valid ordered vector."
46 << " The element at " << stan::error_index::value + n
47 << " is ";
48 std::string msg1_str(msg1.str());
49 std::ostringstream msg2;
50 msg2 << ", but should be greater than the previous element, "
51 << y[n-1];
52 std::string msg2_str(msg2.str());
53 domain_error(function, name, y[n],
54 msg1_str.c_str(), msg2_str.c_str());
55 return false;
56 }
57 }
58 return true;
59 }
60
61 }
62 }
63 #endif
stan
Definition: log_sum_exp.hpp:8
stan::math::index_type
Primary template class for the metaprogram to compute the index type of a container.
Definition: index_type.hpp:18
stan::math::check_ordered
bool check_ordered(const char *function, const char *name, const std::vector< T_y > &y)
Return true if the specified vector is sorted into strictly increasing order.
Definition: check_ordered.hpp:30
index_type.hpp
stan::error_index::value
Definition: error_index.hpp:7
stan::math::domain_error
void domain_error(const char *function, const char *name, const T &y, const char *msg1, const char *msg2)
Throw a domain error with a consistently formatted message.
Definition: domain_error.hpp:30
Eigen.hpp
domain_error.hpp
error_index.hpp

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