1 files changed, 110 insertions, 0 deletions
diff --git a/third_party/rust/ryu/tests/s2f_test.rs b/third_party/rust/ryu/tests/s2f_test.rs
new file mode 100644
index 0000000000..5bae935ff7
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+++ b/third_party/rust/ryu/tests/s2f_test.rs
@@ -0,0 +1,110 @@
+// Translated from C to Rust. The original C code can be found at
+// https://github.com/ulfjack/ryu and carries the following license:
+//
+// Copyright 2018 Ulf Adams
+//
+// The contents of this file may be used under the terms of the Apache License,
+// Version 2.0.
+//
+//    (See accompanying file LICENSE-Apache or copy at
+//     http://www.apache.org/licenses/LICENSE-2.0)
+//
+// Alternatively, the contents of this file may be used under the terms of
+// the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE-Boost or copy at
+//     https://www.boost.org/LICENSE_1_0.txt)
+//
+// Unless required by applicable law or agreed to in writing, this software
+// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.
+
+#![allow(dead_code)]
+#![allow(
+    clippy::cast_lossless,
+    clippy::cast_possible_truncation,
+    clippy::cast_possible_wrap,
+    clippy::cast_possible_wrap,
+    clippy::cast_sign_loss,
+    clippy::checked_conversions,
+    clippy::float_cmp,
+    clippy::manual_range_contains,
+    clippy::similar_names,
+    clippy::too_many_lines,
+    clippy::unreadable_literal,
+    clippy::unseparated_literal_suffix,
+    clippy::wildcard_imports
+)]
+
+#[path = "../src/common.rs"]
+mod common;
+
+#[cfg(not(feature = "small"))]
+#[path = "../src/d2s_full_table.rs"]
+mod d2s_full_table;
+
+#[path = "../src/d2s_intrinsics.rs"]
+mod d2s_intrinsics;
+
+#[cfg(feature = "small")]
+#[path = "../src/d2s_small_table.rs"]
+mod d2s_small_table;
+
+#[path = "../src/d2s.rs"]
+mod d2s;
+
+#[path = "../src/f2s_intrinsics.rs"]
+mod f2s_intrinsics;
+
+#[path = "../src/f2s.rs"]
+mod f2s;
+
+#[path = "../src/s2f.rs"]
+mod s2f;
+
+#[path = "../src/parse.rs"]
+mod parse;
+
+use crate::parse::Error;
+use crate::s2f::s2f;
+
+impl PartialEq for Error {
+    fn eq(&self, other: &Self) -> bool {
+        *self as u8 == *other as u8
+    }
+}
+
+#[test]
+fn test_basic() {
+    assert_eq!(0.0, s2f(b"0").unwrap());
+    assert_eq!(-0.0, s2f(b"-0").unwrap());
+    assert_eq!(1.0, s2f(b"1").unwrap());
+    assert_eq!(-1.0, s2f(b"-1").unwrap());
+    assert_eq!(123456792.0, s2f(b"123456789").unwrap());
+    assert_eq!(299792448.0, s2f(b"299792458").unwrap());
+}
+
+#[test]
+fn test_min_max() {
+    assert_eq!(1e-45, s2f(b"1e-45").unwrap());
+    assert_eq!(f32::MIN_POSITIVE, s2f(b"1.1754944e-38").unwrap());
+    assert_eq!(f32::MAX, s2f(b"3.4028235e+38").unwrap());
+}
+
+#[test]
+fn test_mantissa_rounding_overflow() {
+    assert_eq!(1.0, s2f(b"0.999999999").unwrap());
+    assert_eq!(f32::INFINITY, s2f(b"3.4028236e+38").unwrap());
+    assert_eq!(1.1754944e-38, s2f(b"1.17549430e-38").unwrap()); // FLT_MIN
+    assert_eq!(1.1754944e-38, s2f(b"1.17549431e-38").unwrap());
+    assert_eq!(1.1754944e-38, s2f(b"1.17549432e-38").unwrap());
+    assert_eq!(1.1754944e-38, s2f(b"1.17549433e-38").unwrap());
+    assert_eq!(1.1754944e-38, s2f(b"1.17549434e-38").unwrap());
+    assert_eq!(1.1754944e-38, s2f(b"1.17549435e-38").unwrap());
+}
+
+#[test]
+fn test_trailing_zeros() {
+    assert_eq!(26843550.0, s2f(b"26843549.5").unwrap());
+    assert_eq!(50000004.0, s2f(b"50000002.5").unwrap());
+    assert_eq!(99999992.0, s2f(b"99999989.5").unwrap());
+}