Function fot

test/compute-engine/rubi-utils.test.ts:247–248

(u: Json)

    expect(cond(['HalfIntegerQ', ['Rational', 3, 2]])).toBe(true);
    expect(cond(['HalfIntegerQ', ['Rational', -1, 2]])).toBe(true);
    expect(cond(['HalfIntegerQ', ['Rational', -5, 2]])).toBe(true);
    // integers, other denominators, and non-rationals are NOT half-integers
    expect(cond(['HalfIntegerQ', 2])).toBe(false);
    expect(cond(['HalfIntegerQ', ['Rational', 1, 3]])).toBe(false);
    expect(cond(['HalfIntegerQ', ['Rational', 1, 4]])).toBe(false);