Support no-convert-floats

Author: jdub

src/lib.rs

@@ -190,6 +190,9 @@ pub fn builder_from_flags<I>(args: I) -> Result<(Builder, Box<io::Write>), io::E
                 .takes_value(true)
                 .multiple(true)
                 .number_of_values(1),
+            Arg::with_name("no-convert-floats")
+                .long("no-convert-floats")
+                .help("Don't automatically convert floats to f32/f64."),
             Arg::with_name("no-unstable-rust")
                 .long("no-unstable-rust")
                 .help("Do not generate unstable Rust code."),
@@ -311,6 +314,10 @@ pub fn builder_from_flags<I>(args: I) -> Result<(Builder, Box<io::Write>), io::E
         builder = builder.no_unstable_rust();
     }
 
+    if matches.is_present("no-convert-floats") {
+        builder = builder.no_convert_floats();
+    }
+
     if let Some(opaque_types) = matches.values_of("opaque-type") {
         for ty in opaque_types {
             builder = builder.opaque_type(ty);