Times: Difference between revisions
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=== Documentation === | === Documentation === | ||
* [http://help.dyalog.com/latest/index.htm#Language/Primitive%20Functions/ | * [http://help.dyalog.com/latest/index.htm#Language/Primitive%20Functions/Multiply.htm Dyalog] | ||
Revision as of 07:34, 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 Multiplication 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.