Definitions for sanity check
This page provides all possible meanings and translations of the word sanity check
The act of checking that something does not contain elementary mistakes or impossibilities, or is not based on invalid assumptions
The New Hacker's Dictionary
[very common] 1. The act of checking a piece of code (or anything else, e.g., a Usenet posting) for completely stupid mistakes. Implies that the check is to make sure the author was sane when it was written; e.g., if a piece of scientific software relied on a particular formula and was giving unexpected results, one might first look at the nesting of parentheses or the coding of the formula, as a sanity check, before looking at the more complex I/O or data structure manipulation routines, much less the algorithm itself. Compare reality check. 2. A run-time test, either validating input or ensuring that the program hasn't screwed up internally (producing an inconsistent value or state). 3. Conversationally, saying “sanity check” means you are requesting a check of your assumptions. “Wait a minute, sanity check, are we talking about the same Kevin here?”
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"sanity check." Definitions.net. STANDS4 LLC, 2015. Web. 30 Jan. 2015. <http://www.definitions.net/definition/sanity check>.