From 43934998592bc14127ddf40b02341ca51001ca35 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20A=2E=20S=2E=20Silva?=
 <32930332+mrr00b00t@users.noreply.github.com>
Date: Mon, 1 Nov 2021 10:18:40 -0300
Subject: [PATCH] solve unecessary use of inv function (#12)

* solve unecessary use of inv function

* use inv in \Lambda
---
 src/transforms/eigenanalysis.jl | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/transforms/eigenanalysis.jl b/src/transforms/eigenanalysis.jl
index 91a13f4f..9701b899 100644
--- a/src/transforms/eigenanalysis.jl
+++ b/src/transforms/eigenanalysis.jl
@@ -38,13 +38,15 @@ end
 function drsproj(λ, V)
   Λ = Diagonal(sqrt.(λ))
   S = V * inv(Λ)
-  S, inv(S)
+  S⁻¹ = Λ * transpose(V)
+  S, S⁻¹
 end
 
 function sdsproj(λ, V)
   Λ = Diagonal(sqrt.(λ))
   S = V * inv(Λ) * transpose(V)
-  S, inv(S)
+  S⁻¹ = V * Λ * transpose(V)
+  S, S⁻¹
 end
 
 function matrices(transform::EigenAnalysis, λ, V)