From 930432aefe1479fe359c3971613f09b063d48c71 Mon Sep 17 00:00:00 2001
From: Simon Gardling <titaniumtown@gmail.com>
Date: Thu, 1 Apr 2021 11:25:05 -0400
Subject: [PATCH] remove unused math.rs

---
 src/lib.rs  |  1 -
 src/math.rs | 40 ----------------------------------------
 2 files changed, 41 deletions(-)
 delete mode 100644 src/math.rs

diff --git a/src/lib.rs b/src/lib.rs
index fee30ca..e08bdad 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,7 +1,6 @@
 mod blur;
 mod grid;
 mod imgdata; // for storing image data
-mod math;
 pub mod model;
 mod palette;
 mod util; // for math things
diff --git a/src/math.rs b/src/math.rs
deleted file mode 100644
index fc37981..0000000
--- a/src/math.rs
+++ /dev/null
@@ -1,40 +0,0 @@
-// Previously from trig.rs
-// From https://bits.stephan-brumme.com/absFloat.html
-#[allow(dead_code)]
-#[inline]
-fn abs(x: f32) -> f32 {
-    f32::from_bits(x.to_bits() & 0x7FFF_FFFF)
-}
-
-// Previously from trig.rs
-// Branchless floor implementation
-#[allow(dead_code)]
-#[inline]
-fn floor(x: f32) -> f32 {
-    let mut x_trunc = (x as i32) as f32;
-    x_trunc -= (x < x_trunc) as i32 as f32;
-    x_trunc
-}
-
-// Previously from trig.rs
-// Approximates `cos(x)` in radians with the maximum error of `0.002`
-// https://stackoverflow.com/posts/28050328/revisions
-#[allow(dead_code)]
-#[inline]
-pub fn cos(mut x: f32) -> f32 {
-    const ALPHA: f32 = 0.5 * std::f32::consts::FRAC_1_PI;
-    x *= ALPHA;
-    x -= 0.25_f32 + floor(x + 0.25_f32);
-    x *= 16.0_f32 * (abs(x) - 0.5_f32);
-    x += 0.225_f32 * x * (abs(x) - 1.0_f32);
-    x
-}
-
-// Previously from trig.rs
-// Approximates `sin(x)` in radians with the maximum error of `0.002`
-#[allow(dead_code)]
-#[inline]
-pub fn sin(x: f32) -> f32 {
-    cos(x - std::f32::consts::FRAC_PI_2)
-}
-