Module cos 

Implementations of Cos and CosAssign, traits for computing the cosine of Floats.

Functions

primitive_float_cos

Computes $\cos x$, the cosine of a primitive float. Using this function is more accurate than using the default cos function or the one provided by libm.

primitive_float_cos_pi

Computes $\cos(\pi x)$, the cosine of a primitive float measured in half-turns.

primitive_float_cos_pi_rational

Computes $\cos(\pi x)$, the cosine of a Rational measured in half-turns, returning the result as a primitive float.

primitive_float_cos_rational

Computes $\cos x$, the cosine of a Rational, returning the result as a primitive float.

primitive_float_cos_with_period

Computes $\cos(2\pi x/u)$, the cosine of a primitive float measured in $u$ths of a turn (so that u = 360 is degrees).

primitive_float_cos_with_period_rational

Computes $\cos(2\pi x/u)$, the cosine of a Rational measured in $u$ths of a turn (so that u = 360 is degrees), returning the result as a primitive float.