Module `Prime_float`

Floating point functions.

val e : float: e is the Euler's number e.

val pi : float: pi is the ratio π of the circumference to the diameter of a circle in the Euclidean plane.

val sign : float -> float: sign x is -1.0, 0.0, or 1.0 where x is negative, zero, or positive, respectively.

val round : float -> float: round x is the whole number closest to x, rounding towards zero in case of a tie.

val to_fraction : ?⁠max_denom:int -> float -> int * int

to_fraction x returns (n, d) such that n/d is a best rational approximation of x. The result is based on the continued fraction of the absolute value, with sign copied to the numerator.

parameter max_denom: The maximum denominator to return. The default is currenty 2³⁰ to account for rounding errors and the width of int on 32 bit platforms, but it may be tuned in future versions.