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bit-exact
Producing output identical to a reference down to every last bit.
Bit-exact means two computations match perfectly at the binary level, not just approximately — every bit of the result is the same. It is a strict correctness standard used when validating a renderer or numeric routine against a reference, since even tiny floating-point differences would show up. Meeting it proves the implementation reproduces the reference exactly, not merely closely.
See also
- A/B validationChecking your implementation by running the same work through a trusted reference and comparing outputs.
- A/B testRunning the same suite twice — feature off, then on — to measure exactly what the feature changed.
Referenced by
A/B test · A/B validation · anisotropy / anisotropic filtering · assertion