stan-dev/stan

deprecate int_step

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#2,433 创建于 2017年11月9日

 (5 条评论) (0 个反应) (0 位负责人)C++ (387 个派生)batch import
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描述

Summary:

int_step(x) and step(x) return different values for 0.

The version of step(x) matches the BUGS definition and the standard definition of the Heaviside step function. Therefore, it should not be changed.

Changing int_step()'s behavior would be confusing, so instead it should be deprecated and replaced with a suggestion to replace existing uses of int_step(n) with the boolean expression (n >= 0), which evaluates to 1 if n >= 0 and 0 otherwise.

Current Version:

v2.17.0

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