implement acos, acosf, acosh, acoshf

Cargo.toml

@@ -5,3 +5,6 @@ edition = "2018"
 authors = [ "The LibM Team of HaruxOS" ]
 description = "A port of `libm` that has all the required no_mangle and extern-cs for linking."
 license = "MPL-2.0"
+
+[dependencies]
+libm = "0.2.1"

src/lib.rs

@@ -5,7 +5,16 @@
  * The externc-libm library.
  *
  * Author: HTG-YT
- * Copyright (c) 2021 The Bootmgr Team of the HaruxOS Project
+ * Copyright (c) 2021 The LibM Team of the HaruxOS Project
  */
 
 #![no_std]
+
+#[path = "math/acos.rs"]
+pub mod acos;
+#[path = "math/acosf.rs"]
+pub mod acosf;
+#[path = "math/acosh.rs"]
+pub mod acosh;
+#[path = "math/acoshf.rs"]
+pub mod acoshf;

src/math/acos.rs

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

src/math/acosf.rs

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

src/math/acosh.rs

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

src/math/acoshf.rs

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