1 #ifndef STAN_MATH_REV_SCAL_FUN_TRUNC_HPP 2 #define STAN_MATH_REV_SCAL_FUN_TRUNC_HPP 13 class trunc_vari :
public op_v_vari {
15 explicit trunc_vari(vari* avi) :
16 op_v_vari(
trunc(avi->val_), avi) {
20 avi_->adj_ = std::numeric_limits<double>::quiet_NaN();
56 return var(
new trunc_vari(a.
vi_));
Independent (input) and dependent (output) variables for gradients.
fvar< T > trunc(const fvar< T > &x)
Return the nearest integral value that is not larger in magnitude than the specified argument...
vari * vi_
Pointer to the implementation of this variable.
int is_nan(const fvar< T > &x)
Returns 1 if the input's value is NaN and 0 otherwise.