1 files changed, 35 insertions, 0 deletions
diff --git a/vendor/libm/src/math/roundf.rs b/vendor/libm/src/math/roundf.rs
new file mode 100644
index 000000000..839d9469a
--- /dev/null
+++ b/vendor/libm/src/math/roundf.rs
@@ -0,0 +1,35 @@
+use core::f32;
+
+const TOINT: f32 = 1.0 / f32::EPSILON;
+
+#[inline]
+#[cfg_attr(all(test, assert_no_panic), no_panic::no_panic)]
+pub fn roundf(mut x: f32) -> f32 {
+    let i = x.to_bits();
+    let e: u32 = i >> 23 & 0xff;
+    let mut y: f32;
+
+    if e >= 0x7f + 23 {
+        return x;
+    }
+    if i >> 31 != 0 {
+        x = -x;
+    }
+    if e < 0x7f - 1 {
+        force_eval!(x + TOINT);
+        return 0.0 * x;
+    }
+    y = x + TOINT - TOINT - x;
+    if y > 0.5f32 {
+        y = y + x - 1.0;
+    } else if y <= -0.5f32 {
+        y = y + x + 1.0;
+    } else {
+        y = y + x;
+    }
+    if i >> 31 != 0 {
+        -y
+    } else {
+        y
+    }
+}