[libc-commits] [libc] 594b6f7 - [libc][math][c++23] Implement comparison operations operator overloads for BFloat16 (#150087)

[via libc-commits]

Author: Krishna Pandey
Date: 2025-07-23T16:06:24+02:00
New Revision: 594b6f7b3f70b26bf9c7b34d54340797e3e07a1d

URL: https://github.com/llvm/llvm-project/commit/594b6f7b3f70b26bf9c7b34d54340797e3e07a1d
DIFF: https://github.com/llvm/llvm-project/commit/594b6f7b3f70b26bf9c7b34d54340797e3e07a1d.diff

LOG: [libc][math][c++23] Implement comparison operations operator overloads for BFloat16 (#150087)

Signed-off-by: Krishna Pandey <kpandey81930 at gmail.com>

Added: 
    

Modified: 
    libc/src/__support/FPUtil/CMakeLists.txt
    libc/src/__support/FPUtil/bfloat16.h

Removed: 
    


################################################################################
diff  --git a/libc/src/__support/FPUtil/CMakeLists.txt b/libc/src/__support/FPUtil/CMakeLists.txt
index f157d90abb8aa..372eba374d8eb 100644
--- a/libc/src/__support/FPUtil/CMakeLists.txt
+++ b/libc/src/__support/FPUtil/CMakeLists.txt
@@ -274,6 +274,7 @@ add_header_library(
     bfloat16.h
   DEPENDS
     .cast
+    .comparison_operations
     .dyadic_float
     libc.src.__support.CPP.bit
     libc.src.__support.CPP.type_traits

diff  --git a/libc/src/__support/FPUtil/bfloat16.h b/libc/src/__support/FPUtil/bfloat16.h
index bc0b8b23896fc..05edbba048cb7 100644
--- a/libc/src/__support/FPUtil/bfloat16.h
+++ b/libc/src/__support/FPUtil/bfloat16.h
@@ -12,6 +12,7 @@
 #include "src/__support/CPP/bit.h"
 #include "src/__support/CPP/type_traits.h"
 #include "src/__support/FPUtil/cast.h"
+#include "src/__support/FPUtil/comparison_operations.h"
 #include "src/__support/FPUtil/dyadic_float.h"
 #include "src/__support/macros/config.h"
 #include "src/__support/macros/properties/types.h"
@@ -57,6 +58,30 @@ struct BFloat16 {
     uint32_t x_bits = static_cast<uint32_t>(bits) << 16U;
     return cpp::bit_cast<float>(x_bits);
   }
+
+  LIBC_INLINE constexpr bool operator==(BFloat16 other) const {
+    return fputil::equals(*this, other);
+  }
+
+  LIBC_INLINE constexpr bool operator!=(BFloat16 other) const {
+    return !fputil::equals(*this, other);
+  }
+
+  LIBC_INLINE constexpr bool operator<(BFloat16 other) const {
+    return fputil::less_than(*this, other);
+  }
+
+  LIBC_INLINE constexpr bool operator<=(BFloat16 other) const {
+    return fputil::less_than_or_equals(*this, other);
+  }
+
+  LIBC_INLINE constexpr bool operator>(BFloat16 other) const {
+    return fputil::greater_than(*this, other);
+  }
+
+  LIBC_INLINE constexpr bool operator>=(BFloat16 other) const {
+    return fputil::greater_than_or_equals(*this, other);
+  }
 }; // struct BFloat16
 
 } // namespace fputil