CodeQL library for C/C++
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Predicate linearAccess

Holds if expr is equivalent to p*v + q, where p is a non-zero number. This takes into account the associativity, commutativity and distributivity of arithmetic operations.

Import path

import semmle.code.cpp.rangeanalysis.RangeAnalysisUtils
predicate linearAccess(Expr expr, VariableAccess v, float p, float q)