From 3d005629b82153c5bc20f7e82e1ad861dc0b7dc5 Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <jorge@japaric.io>
Date: Tue, 24 Jul 2018 13:26:50 -0500
Subject: [PATCH] expose fmod{,f} symbols on thumb

these symbols are required for the built-in operation `f32 % f32`
---
 src/lib.rs  |  4 +---
 src/math.rs | 11 +++++++++++
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 3e665a8..5c87e90 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -47,10 +47,8 @@ mod macros;
 pub mod int;
 pub mod float;
 
-pub mod mem;
-// only for the wasm32-unknown-unknown target
-#[cfg(all(target_arch = "wasm32", target_os = "unknown"))]
 pub mod math;
+pub mod mem;
 
 #[cfg(target_arch = "arm")]
 pub mod arm;
diff --git a/src/math.rs b/src/math.rs
index f1eaaa5..6eddc3d 100644
--- a/src/math.rs
+++ b/src/math.rs
@@ -14,6 +14,8 @@ macro_rules! no_mangle {
     }
 }
 
+// only for the wasm32-unknown-unknown target
+#[cfg(all(target_arch = "wasm32", target_os = "unknown"))]
 no_mangle! {
     fn acos(x: f64) -> f64;
     fn asin(x: f64) -> f64;
@@ -50,3 +52,12 @@ no_mangle! {
     fn fma(x: f64, y: f64, z: f64) -> f64;
     fn fmaf(x: f32, y: f32, z: f32) -> f32;
 }
+
+// only for the thumb*-none-eabi* targets
+#[cfg(all(target_arch = "arm", target_os = "none"))]
+no_mangle! {
+    // `f64 % f64`
+    fn fmod(x: f64, y: f64) -> f64;
+    // `f32 % f32`
+    fn fmodf(x: f32, y: f32) -> f32;
+}