add erf, erff, erfc, erfcf functions

src/lib.rs

@@ -57,4 +57,12 @@ pub mod cosf;
 #[path = "math/cosh.rs"]
 pub mod cosh;
 #[path = "math/coshf.rs"]
-pub mod coshf;
+pub mod coshf;
+#[path = "math/erf.rs"]
+pub mod erf;
+#[path = "math/erfc.rs"]
+pub mod erfc;
+#[path = "math/erfcf.rs"]
+pub mod erfcf;
+#[path = "math/erff.rs"]
+pub mod erff;

src/math/erf.rs

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

src/math/erfc.rs

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

src/math/erfcf.rs

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

src/math/erff.rs

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