gf_is_one

Arguments

a

Real vector: an element or a polynomial, constant term first.

tf

T if the first entry of a is 1 and all the others are 0.

Description

gf_is_one(a) tests whether a is the unit element 1 (or the constant polynomial 1). The entries of a are read in column order, so it is meant for a single element.

Examples

F = gf_create_field(2, 4); gf_is_one(gf_power(F, [0 1 0 0], 15)) // T gf_is_one([0 1 0 0]) // F

See also

• gf_is_zero — Tests whether all coefficients of an array are zero
• gf_are_equal — Tests whether two arrays have the same size and entries

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