From 4084f6900e0566b03bde23c112f7b3a04b298842 Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Thu, 30 Apr 2026 11:05:19 -0400
Subject: [PATCH] util/half: Add double_to_float16_ru/rd helpers

Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41295>
---
 src/util/half_float.h              | 12 ++++++++++++
 src/util/tests/half_float_test.cpp | 10 ++++++++++
 2 files changed, 22 insertions(+)

diff --git a/src/util/half_float.h b/src/util/half_float.h
index 10797454fe9..3ed47981f43 100644
--- a/src/util/half_float.h
+++ b/src/util/half_float.h
@@ -223,6 +223,18 @@ _mesa_double_to_float16_rtz(double val)
    return _mesa_float_to_float16_rtz(_mesa_reduce_double_for_f16(val));
 }
 
+static inline uint16_t
+_mesa_double_to_float16_ru(double val)
+{
+   return _mesa_float_to_float16_ru(_mesa_reduce_double_for_f16(val));
+}
+
+static inline uint16_t
+_mesa_double_to_float16_rd(double val)
+{
+   return _mesa_float_to_float16_rd(_mesa_reduce_double_for_f16(val));
+}
+
 #ifdef __cplusplus
 
 namespace mesa
diff --git a/src/util/tests/half_float_test.cpp b/src/util/tests/half_float_test.cpp
index 1469e95f2af..f34692f7e75 100644
--- a/src/util/tests/half_float_test.cpp
+++ b/src/util/tests/half_float_test.cpp
@@ -539,3 +539,13 @@ TEST(double_to_float16_rtz, rounding)
 {
    test_double_to_half_rounding(_mesa_double_to_float16_rtz, RTZ);
 }
+
+TEST(double_to_float16_ru, rounding)
+{
+   test_double_to_half_rounding(_mesa_double_to_float16_ru, RU);
+}
+
+TEST(double_to_float16_rd, rounding)
+{
+   test_double_to_half_rounding(_mesa_double_to_float16_rd, RD);
+}