Nand: Difference between revisions

{{Built-in|Nand|⍲}} is a [[dyadic]] [[scalar function|scalar]] [[boolean function]] which tests if either argument is not true: it returns 0 if both are 1 and 1 if at least one is 0. It represents the [[wikipedia:Sheffer stroke|Sheffer stroke]] or alternative denial in Boolean logic. Nand is the [[not|boolean negation]] <source lang=apl inline>~</source> of the [[And]] function <source lang=apl inline>∧</source>. The [[glyph]] for Nand is composed from those of [[Not]] (<source lang=apl inline>~</source>) and [[And]] (<source lang=apl inline>∧</source>), but [[fonts]] vary in how they compose them; some overlaying the glyphs (∧&#x334;), and some stacking them (∧&#x303;).