Fix randn cpu (#382)

* Change distributions

Standard generates in [0, 1), Normal is correct.

* Add test

Not sure if this is the best place to put  the test

* Remove unnecessary use

1 files changed, 1 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 4bc0058b..850b13ef 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,6 +41,7 @@ memmap2 = "0.7.1"
 num_cpus = "1.15.0"
 num-traits = "0.2.15"
 rand = "0.8.5"
+rand_distr = "0.4.3"
 safetensors = "0.3.1"
 serde = { version = "1.0.171", features = ["derive"] }
 serde_json = "1.0.99"