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check_finite.hpp
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1 #ifndef STAN_MATH_PRIM_SCAL_ERR_CHECK_FINITE_HPP
2 #define STAN_MATH_PRIM_SCAL_ERR_CHECK_FINITE_HPP
3
4 #include <stan/math/prim/scal/err/domain_error.hpp>
5 #include <stan/math/prim/scal/err/domain_error_vec.hpp>
6 #include <stan/math/prim/scal/meta/length.hpp>
7 #include <stan/math/prim/scal/meta/is_vector_like.hpp>
8 #include <stan/math/prim/scal/fun/value_of_rec.hpp>
9 #include <boost/math/special_functions/fpclassify.hpp>
10
11 namespace stan {
12 namespace math {
13
14 namespace {
15 template <typename T_y, bool is_vec>
16 struct finite {
17 static bool check(const char* function,
18 const char* name,
19 const T_y& y) {
20 if (!(boost::math::isfinite)(value_of_rec(y)))
21 domain_error(function, name, y,
22 "is ", ", but must be finite!");
23 return true;
24 }
25 };
26
27 template <typename T_y>
28 struct finite<T_y, true> {
29 static bool check(const char* function,
30 const char* name,
31 const T_y& y) {
32 using stan::length;
33 for (size_t n = 0; n < length(y); n++) {
34 if (!(boost::math::isfinite)(value_of_rec(stan::get(y, n))))
35 domain_error_vec(function, name, y, n,
36 "is ", ", but must be finite!");
37 }
38 return true;
39 }
40 };
41 }
42
59 template <typename T_y>
60 inline bool check_finite(const char* function,
61 const char* name,
62 const T_y& y) {
63 return finite<T_y, is_vector_like<T_y>::value>
64 ::check(function, name, y);
65 }
66 }
67 }
68 #endif
boost::math::isfinite
bool isfinite(const stan::math::var &v)
Checks if the given number has finite value.
Definition: boost_isfinite.hpp:22
stan
Definition: log_sum_exp.hpp:8
stan::math::value_of_rec
double value_of_rec(const fvar< T > &v)
Return the value of the specified variable.
Definition: value_of_rec.hpp:21
stan::length
size_t length(const std::vector< T > &x)
Definition: length.hpp:10
domain_error_vec.hpp
is_vector_like.hpp
stan::math::domain_error_vec
void domain_error_vec(const char *function, const char *name, const T &y, const size_t i, const char *msg1, const char *msg2)
Throw a domain error with a consistently formatted message.
Definition: domain_error_vec.hpp:37
stan::get
T get(const std::vector< T > &x, size_t n)
Definition: get.hpp:10
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
value_of_rec.hpp
length.hpp
stan::math::check_finite
bool check_finite(const char *function, const char *name, const T_y &y)
Return true if y is finite.
Definition: check_finite.hpp:60
domain_error.hpp

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