fy = table(t,fx)
table(t,fx) = fy

Get/set a table entry.

When getting a table entry, the table t is consulted, and a y-value corresponding to the given value of x is found by interpolation. If x is less than or greater than any x-value in the table, then the y-value associated with the least or greatest x-value is returned. The result of this function is not defined if the table is not sorted by increasing x-value.

When setting a table entry, an (x,y) pair is inserted into the first appropriate place in the table t (i.e., the new item is inserted between two existing items with x-values that bracket the given value of x). The new item is placed at the beginning of the table or appended to the end if the given x is less than the lowest x or greater than the greatest x, respectively. The number of items in the table is increased by one following execution of this statement. If table t does not exist, it is created, and the given item is taken as the first entry. If the given x is identical to the stored x of an (x,y) pair, then the y-value is updated instead of a new pair inserted.


A new table is created if a unique integer or string name is given as the first argument.


fy - y-value


fy - y-value


t - integer name, string name or table pointer

fx - x-value