tvl-depot/users/sterni/nix/float/default.nix

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Nix
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{ 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;
}