mirror of
https://gitlab.com/scemama/QCaml.git
synced 2024-12-22 12:23:31 +01:00
16 lines
333 B
OCaml
16 lines
333 B
OCaml
let integrals_cutoff = 1.e-15
|
|
let epsilon = 1.e-20
|
|
|
|
(** Constants *)
|
|
let pi = acos (-1.)
|
|
let two_pi = 2. *. pi
|
|
let sq_pi = sqrt pi
|
|
let sq_pi_over_two = sq_pi *. 0.5
|
|
let pi_inv = 1. /. pi
|
|
let two_over_sq_pi = 2. /. (sqrt pi)
|
|
|
|
let a0 = 0.529_177_210_67
|
|
let a0_inv = 1. /. a0
|
|
let ha_to_ev = 27.211_386_02
|
|
let ev_to_ha = 1. /. ha_to_ev
|