add copysign, copysignf

src/lib.rs

@@ -45,4 +45,8 @@ pub mod cbrtf;
 #[path = "math/ceil.rs"]
 pub mod ceil;
 #[path = "math/ceilf.rs"]
-pub mod ceilf;
+pub mod ceilf;
+#[path = "math/copysign.rs"]
+pub mod copysign;
+#[path = "math/copysignf.rs"]
+pub mod copysignf;

src/math/copysign.rs

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: MPL-2.0
+/*
+ * File: src/math/copysign.rs
+ *
+ * The copysign function.
+ *
+ * Author: HTG-YT
+ * Copyright (c) 2021 The LibM Team of the HaruxOS Project
+ */
+
+#[no_mangle]
+pub extern "C" fn copysign(x: f64, y: f64) -> f64 {
+    libm::copysign(x, y)
+}

src/math/copysignf.rs

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: MPL-2.0
+/*
+ * File: src/math/copysignf.rs
+ *
+ * The copysignf function.
+ *
+ * Author: HTG-YT
+ * Copyright (c) 2021 The LibM Team of the HaruxOS Project
+ */
+
+#[no_mangle]
+pub extern "C" fn copysignf(x: f32, y: f32) -> f32 {
+    libm::copysignf(x, y)
+}