Times: Difference between revisions
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:''This page describes the dyadic arithmetic function. For sign of a single argument, see [[Signum]].'' | :''This page describes the dyadic arithmetic function. For sign of a single argument, see [[Signum]].'' | ||
{{Built-in|Product|×}}, '''Times''', or ''' | {{Built-in|Product|×}}, '''Times''', or '''Multiply''' is a [[dyadic]] [[scalar function]] which gives the arithmetic product of its [[argument]]s. Subtract shares the [[glyph]] <source lang=apl inline>×</source> with the monadic arithmetic function [[Signum]], and its result is the left argument times the right argument. | ||
== Examples == | == Examples == | ||
Revision as of 07:35, 26 April 2020
- This page describes the dyadic arithmetic function. For sign of a single argument, see Signum.
×
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Product (×), Times, or Multiply is a dyadic scalar function which gives the arithmetic product of its arguments. Subtract shares the glyph × with the monadic arithmetic function Signum, and its result is the left argument times the right argument.
Examples
A long, slow way to write `!10`:
×/⍳10
Properties
Subtraction is commutative: swapping the arguments don't affect the result, e.g. using Commute, *⍨.
Reduction and scan
Reduction with Product gives the product of the whole list.