CoCoA:IsNumber
From ApCoCoAWiki
IsNumber
checks if the argument is a number
Description
This function returns TRUE if E has type INT, RAT, or ZMOD.
Otherwise, it returns FALSE.
Example
Use R ::= Q[x,y]; IsNumber(x+y); FALSE ------------------------------- IsNumber(3); TRUE ------------------------------- IsNumber(3%5); TRUE -------------------------------
Syntax
IsNumber(E:OBJECT):BOOL
<type>boolean</type> <type>integer</type> <type>rat</type> <type>zmod</type>
