Update libm

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 authors = ["Jorge Aparicio <japaricious@gmail.com>"]
 name = "compiler_builtins"
-version = "0.1.45"
+version = "0.1.46"
 license = "MIT/Apache-2.0"
 readme = "README.md"
 repository = "https://github.com/rust-lang/compiler-builtins"

libm

@@ -1 +1 @@
-Subproject commit fe396e00b7e47821a81c4c87a481ddc6af1d2cdf
+Subproject commit c2d22bf95e2f032ae6b237e8e4c336bc795a151c