From 1351a2a7d98cf288e44773c3cb4ff67929b3e6fc Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Mon, 4 Sep 2023 19:47:24 -0700
Subject: Precalculate some square factors

---
 core/uhjfilter.cpp | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

(limited to 'core')

diff --git a/core/uhjfilter.cpp b/core/uhjfilter.cpp
index d56d9b9d..4e4e99a5 100644
--- a/core/uhjfilter.cpp
+++ b/core/uhjfilter.cpp
@@ -29,23 +29,18 @@ template<>
 struct GetPhaseShifter<UhjLength512> { static auto& Get() noexcept { return PShiftHq; } };
 
 
-constexpr float square(double x) noexcept
-{ return static_cast<float>(x*x); }
-
 /* Filter coefficients for the 'base' all-pass IIR, which applies a frequency-
  * dependent phase-shift of N degrees. The output of the filter requires a 1-
  * sample delay.
  */
 constexpr std::array<float,4> Filter1Coeff{{
-    square(0.6923878), square(0.9360654322959), square(0.9882295226860),
-    square(0.9987488452737)
+    0.479400865589f, 0.876218493539f, 0.976597589508f, 0.997499255936f
 }};
 /* Filter coefficients for the offset all-pass IIR, which applies a frequency-
  * dependent phase-shift of N+90 degrees.
  */
 constexpr std::array<float,4> Filter2Coeff{{
-    square(0.4021921162426), square(0.8561710882420), square(0.9722909545651),
-    square(0.9952884791278)
+    0.161758498368f, 0.733028932341f, 0.945349700329f, 0.990599156684f
 }};
 
 } // namespace
-- 
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