Syntax:
sum <identifier> = <from> to <to> do <body>
sum <identifier> = <from> to <to> by <increment> do <body>
sum <identifier> in <matrix> do <body>
prod <identifier> = <from> to <to> do <body>
prod <identifier> = <from> to <to> by <increment> do <body>
prod <identifier> in <matrix> do <body>
If you substitute for
with sum
or prod
, then you will get a sum or a product instead of a for
loop. Instead of returning the last value, these will return the sum or the product of the values respectively.
Om ingen kropp exekveras (till exempel sum i=1 to 0 do ...
) så kommer sum
att returnera 0 och prod
att returnera 1 som är standardkonventionen.
För flyttal görs samma skydd mot avrundningsfel som i for-slingan. Se the section called “For-slingor”.