24 lines
522 B
Nix
24 lines
522 B
Nix
|
{ depot, ... }:
|
||
|
|
|
||
|
|
let
|
||
|
|
inherit (depot.users.sterni.nix)
|
||
|
|
num
|
||
|
|
;
|
||
|
|
in
|
||
|
|
|
||
|
|
rec {
|
||
|
|
# In C++ Nix, the required builtins have been added in version 2.4
|
||
|
|
ceil = builtins.ceil or (throw "Nix implementation is missing builtins.ceil");
|
||
|
|
floor = builtins.floor or (throw "Nix implementation is missing builtins.floor");
|
||
|
|
|
||
|
|
truncate = f: if f >= 0 then floor f else ceil f;
|
||
|
|
round = f:
|
||
|
|
let
|
||
|
|
s = num.sign f;
|
||
|
|
a = s * f;
|
||
|
|
in
|
||
|
|
s * (if a >= floor a + 0.5 then ceil a else floor a);
|
||
|
|
|
||
|
|
intToFloat = i: i * 1.0;
|
||
|
|
}
|