From 252a1c9dce56c519ebf11c26c19f451e9fe87726 Mon Sep 17 00:00:00 2001
From: Daniel Lemire <daniel@lemire.me>
Date: Mon, 6 Feb 2023 17:22:11 -0500
Subject: [PATCH] Minor fix.

---
 include/fast_float/parse_number.h | 4 ++++
 tests/basictest.cpp               | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/include/fast_float/parse_number.h b/include/fast_float/parse_number.h
index 2493b02..3284443 100644
--- a/include/fast_float/parse_number.h
+++ b/include/fast_float/parse_number.h
@@ -66,6 +66,10 @@ from_chars_result parse_infnan(const char *first, const char *last, T &value)  n
  * Credit : @mwalcott3
  */
 fastfloat_really_inline bool rounds_to_nearest() noexcept {
+  // https://lemire.me/blog/2020/06/26/gcc-not-nearest/
+#if (FLT_EVAL_METHOD != 1) && (FLT_EVAL_METHOD != 0)
+  return false;
+#endif
   // See
   // A fast function to check your floating-point rounding mode
   // https://lemire.me/blog/2022/11/16/a-fast-function-to-check-your-floating-point-rounding-mode/
diff --git a/tests/basictest.cpp b/tests/basictest.cpp
index 8bdd4df..433a9b5 100644
--- a/tests/basictest.cpp
+++ b/tests/basictest.cpp
@@ -132,7 +132,9 @@ TEST_CASE("rounds_to_nearest") {
   fesetround(FE_TONEAREST);
   std::cout << "FE_TONEAREST: fmin + 1.0f = " << iHexAndDec(fmin + 1.0f) << " 1.0f - fmin = " << iHexAndDec(1.0f - fmin) << std::endl;
   CHECK(fegetround() == FE_TONEAREST);
+#if (FLT_EVAL_METHOD == 1) || (FLT_EVAL_METHOD == 0)
   CHECK(fast_float::detail::rounds_to_nearest() == true);
+#endif
 }
 
 TEST_CASE("parse_zero") {