Fix negating `f16` and `f128` constants

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/ui/numbers-arithmetic/f16-f128-lit.rs b/tests/ui/numbers-arithmetic/f16-f128-lit.rs
new file mode 100644
index 00000000000..762436edb16
--- /dev/null
+++ b/tests/ui/numbers-arithmetic/f16-f128-lit.rs
@@ -0,0 +1,16 @@
+//@ run-pass
+
+#![feature(f16)]
+#![feature(f128)]
+
+fn main() {
+    assert_eq!(0.0_f16.to_bits(), 0x0000);
+    assert_eq!((-0.0_f16).to_bits(), 0x8000);
+    assert_eq!(10.0_f16.to_bits(), 0x4900);
+    assert_eq!((-10.0_f16).to_bits(), 0xC900);
+
+    assert_eq!(0.0_f128.to_bits(), 0x0000_0000_0000_0000_0000_0000_0000_0000);
+    assert_eq!((-0.0_f128).to_bits(), 0x8000_0000_0000_0000_0000_0000_0000_0000);
+    assert_eq!(10.0_f128.to_bits(), 0x4002_4000_0000_0000_0000_0000_0000_0000);
+    assert_eq!((-10.0_f128).to_bits(), 0xC002_4000_0000_0000_0000_0000_0000_0000);
+}