Initializing help system before first use

xpress.is_equal

Purpose
Compares two Xpress objects for equality.
Synopsis
result = xpress.is_equal(arg1, arg2)
Arguments
arg1 
First object to compare.
arg2 
Second object to compare.
Return value
result 
True if arg1 and arg2 represent the same expression, otherwise False.
Further information
When comparing variables, linear expressions, quadratic expressions, and constant values, xpress.is_equal returns True for all algebraically equivalent objects. However, when comparing nonlinear expressions, xpress.is_equal only returns True for expressions with the same algebraic form. For example, the linear expressions 3 * x + 2 * y and 2 * y + 3 * x are considered to be equal, whereas the nonlinear expressions cos(x) + sin(x) and sin(x) + cos(x) are not considered to be equal, because the operands are ordered differently. This is for performance reasons.
Related topics
xpress.setConstraintOperatorsEnabled.

Parent Topic Xpress base functions

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