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authorsterni <sternenseemann@systemli.org>2023-08-05T14·07+0200
committersterni <sternenseemann@systemli.org>2023-08-09T12·12+0000
commit55a3b3eb81a1c37b0c5345e68c03520c85564e3d (patch)
treefed17501809109ab90e8324732fdc68a32f1fee5 /users/sterni/nix/num
parent984ea69386a47e753c4129e2a6230aa60b4584cd (diff)
feat(sterni/nix): add trivial float library r/6478
Only implements the different conversion types from and to ints for now.
Unfortunately very reliant on builtins.{floor,ceil} which can't be
implemented purely except very inefficiently (to my knowledge), so it
only really works for C++ Nix >= 2.4. Tests are thus skipped for
C++ Nix 2.3.

Change-Id: Idcb1a11df11e214cdba3f2a0715472b370daa7dc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9008
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Diffstat (limited to 'users/sterni/nix/num')
-rw-r--r--users/sterni/nix/num/default.nix1
1 files changed, 1 insertions, 0 deletions
diff --git a/users/sterni/nix/num/default.nix b/users/sterni/nix/num/default.nix
index 640493083722..81e2f8377f3b 100644
--- a/users/sterni/nix/num/default.nix
+++ b/users/sterni/nix/num/default.nix
@@ -8,6 +8,7 @@ rec {
     sub
     ;
 
+  sign = i: if i < 0 then -1 else 1;
   abs = i: if i < 0 then -i else i;
 
   inRange = a: b: x: x >= a && x <= b;