Difference between revisions of "Times"
Jump to navigation
Jump to search
Line 22:  Line 22:  
* [http://help.dyalog.com/latest/index.htm#Language/Primitive%20Functions/Multiply.htm Dyalog]  * [http://help.dyalog.com/latest/index.htm#Language/Primitive%20Functions/Multiply.htm Dyalog]  
+  {{APL builtins}} 
Revision as of 07:40, 26 April 2020
 This page describes the dyadic arithmetic function. For sign of a single argument, see Signum.
×

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.