copysign_non_zero()

template<typename T , typename U >

T stan::math::copysign_non_zero ( const T &  x, const U &  y  )

inline

Return the negation of the first argument if the first and second arguments have different signs and the first argument is not zero, otherwise return a copy of the first argument.

Template Parameters

T	type of first argument
U	type of second argument

Parameters

[in]	x	first complex argument
[in]	y	second complex argument

Returns

copy of the first argument, negated if necessary to match the sign of the second argument

See also

copysign

Definition at line 49 of file copysign.hpp.