From 3f823c7c6b5548eae6aebce0b6eb9f633a48337e Mon Sep 17 00:00:00 2001
From: ctzsnooze <chris@th.id.au>
Date: Thu, 28 Nov 2024 13:22:50 +1100
Subject: [PATCH] Reduce ITCM RAM footprint considerably

---
 src/main/common/maths.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/common/maths.c b/src/main/common/maths.c
index d47acd6ab9..da04119e84 100644
--- a/src/main/common/maths.c
+++ b/src/main/common/maths.c
@@ -54,8 +54,8 @@ float sin_approx(float x)
 {
     // Wrap angle to 2π with range [-π π]
     x = fmodf(x, 2.0f * M_PIf);
-    if (x <= -M_PIf) x += 2.0f * M_PIf;
-    if (x > M_PIf) x -= 2.0f * M_PIf;
+    while (x >  M_PIf) x -= (2.0f * M_PIf);   // always wrap input angle to -PI..PI
+    while (x < -M_PIf) x += (2.0f * M_PIf);
 
     // Use axis symmetry around x = ±π/2 for polynomial outside of range [-π/2 π/2]
     if (x > M_PIf / 2) {