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-rw-r--r--src/libstd/unstable/intrinsics.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libstd/unstable/intrinsics.rs b/src/libstd/unstable/intrinsics.rs
index 8959d591c37..c9e1b5b3b00 100644
--- a/src/libstd/unstable/intrinsics.rs
+++ b/src/libstd/unstable/intrinsics.rs
@@ -414,9 +414,9 @@ extern "rust-intrinsic" {
     pub fn fabsf64(x: f64) -> f64;
 
     #[cfg(not(stage0))]
-    pub fn copysignf32(x: f32) -> f32;
+    pub fn copysignf32(x: f32, y: f32) -> f32;
     #[cfg(not(stage0))]
-    pub fn copysignf64(x: f64) -> f64;
+    pub fn copysignf64(x: f64, y: f64) -> f64;
 
     pub fn floorf32(x: f32) -> f32;
     pub fn floorf64(x: f64) -> f64;