step() [3/3]

var stan::math::step ( const var &  a )

inline

Return the step, or heaviside, function applied to the specified variable (stan).

See step() for the double-based version.

The derivative of the step function is zero everywhere but at 0, so for convenience, it is taken to be everywhere zero,

\(\mbox{step}(x) = 0\).

Parameters

a	Variable argument.

Returns

The constant variable with value 1.0 if the argument's value is greater than or equal to 0.0, and value 0.0 otherwise.

Definition at line 27 of file step.hpp.