Stan Math Library  2.11.0
reverse mode automatic differentiation
as_bool.hpp
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1 #ifndef STAN_MATH_REV_SCAL_FUN_AS_BOOL_HPP
2 #define STAN_MATH_REV_SCAL_FUN_AS_BOOL_HPP
3 
4 #include <stan/math/rev/core.hpp>
5 
6 namespace stan {
7  namespace math {
8 
15  inline int as_bool(const var& v) {
16  return 0.0 != v.vi_->val_;
17  }
18 
19  }
20 }
21 #endif
bool as_bool(const T x)
Return 1 if the argument is unequal to zero and 0 otherwise.
Definition: as_bool.hpp:14
Independent (input) and dependent (output) variables for gradients.
Definition: var.hpp:31
const double val_
The value of this variable.
Definition: vari.hpp:38
vari * vi_
Pointer to the implementation of this variable.
Definition: var.hpp:43

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