1 files changed, 37 insertions, 0 deletions
diff --git a/library/core/benches/num/flt2dec/mod.rs b/library/core/benches/num/flt2dec/mod.rs
new file mode 100644
index 000000000..32fd5e626
--- /dev/null
+++ b/library/core/benches/num/flt2dec/mod.rs
@@ -0,0 +1,37 @@
+mod strategy {
+    mod dragon;
+    mod grisu;
+}
+
+use core::num::flt2dec::MAX_SIG_DIGITS;
+use core::num::flt2dec::{decode, DecodableFloat, Decoded, FullDecoded};
+use std::io::Write;
+use std::vec::Vec;
+use test::Bencher;
+
+pub fn decode_finite<T: DecodableFloat>(v: T) -> Decoded {
+    match decode(v).1 {
+        FullDecoded::Finite(decoded) => decoded,
+        full_decoded => panic!("expected finite, got {full_decoded:?} instead"),
+    }
+}
+
+#[bench]
+fn bench_small_shortest(b: &mut Bencher) {
+    let mut buf = Vec::with_capacity(20);
+
+    b.iter(|| {
+        buf.clear();
+        write!(&mut buf, "{}", 3.1415926f64).unwrap()
+    });
+}
+
+#[bench]
+fn bench_big_shortest(b: &mut Bencher) {
+    let mut buf = Vec::with_capacity(300);
+
+    b.iter(|| {
+        buf.clear();
+        write!(&mut buf, "{}", f64::MAX).unwrap()
+    });
+}