\(\newcommand{\B}[1]{ {\bf #1} }\) \(\newcommand{\R}[1]{ {\rm #1} }\)

a_double_cond_assign

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AD Conditional Assignment

Syntax

target.cond_assign ( cop , left , right , if_true , if_false )

Purpose

The code

      if ( left cop right )

            target = if_true

      else

            target = if_false

records either the true or false case depending on the value of left and right ; see cpp_fun_ctor. If left or right is a variable, it may be desirable to switch between if_true and if_false depending of the value of the independent variable during calls to order zero cpp_fun_forward. The cond_assign does this.

target

This object has c++ prototype

      a_double& target

cop

This argument has c++ prototype

      const char *cop

The comparison is

      left cop right

where cop is one of the following:

cop
<	less than
<=	less than or equal
==	equal
>=	greater than or equal
>	greater than

left

This argument has c++ prototype

      const a_double& left

It specifies the left operand in the comparison.

right

This argument has c++ prototype

      const a_double& right

It specifies the right operand in the comparison.

if_true

This argument has c++ prototype

      const a_double& if_true

It specifies the value assigned to ad if the result of the comparison is true.

if_false

This argument has c++ prototype

      const a_double& if_false

It specifies the value assigned to ad if the result of the comparison is false.

Example

c++, python.