Floating Point Comparison with Incorrect Operator

Incomplete Variant
Structure: Simple
Description

The code performs a comparison such as an equality test between two float (floating point) values, but it uses comparison operators that do not account for the possibility of loss of precision.

Extended Description

Numeric calculation using floating point values can generate imprecise results because of rounding errors. As a result, two different calculations might generate numbers that are mathematically equal, but have slightly different bit representations that do not translate to the same mathematically-equal values. As a result, an equality test or other comparison might produce unexpected results. This issue can prevent the product from running reliably. If the relevant code is reachable by an attacker, then this reliability problem might introduce a vulnerability.

Common Consequences 1
Scope: Other

Impact: Reduce Reliability

References 2
Automated Source Code Reliability Measure (ASCRM)
Object Management Group (OMG)
01-2016
ID: REF-961
Comparing Floating Point Numbers, 2012 Edition
Bruce Dawson
25-02-2012
ID: REF-975
Related Weaknesses
Taxonomy Mapping
  • OMG ASCRM