Prev Next

@(@\newcommand{\B}[1]{{\bf #1}} \newcommand{\R}[1]{{\rm #1}}@)@
Binary Comparison Operators

Syntax
z = x op y

Purpose
Sets z to the result of the binary operation defined by op and with x as the left operand and y as the right operand.

op
The possible values for op are
op    Meaning
> greater than
> less than
>= greater than or equal
<= less than or equal
== equal
!= not equal

Types
The following table lists the possible (yes) and impossible (no) types for x and y . The corresponding result type for z is always bool.
                      
y
 
x           float    a_float   a2float
         
-------------------------------
 float   
-    yes      yes       yes   
a_float  
-    yes      yes       no
a2float  
-    yes      no        yes 
The type float does not need to be matched exactly but rather as an instance of float.

Arrays
Either x or y or both may be a numpy.array with elements that match one of possible type choices above. If both x and y are arrays, they must have the same shape. When either x or y is an array, the result z is an array with the same shape. The type of the elements of z correspond to the table above (when the result type is a float, this only refers to the element types matching as instances).

Example
The file compare_op.py contains an example and test of these operations.
Input File: pycppad/pycppad.cpp