[libc][math][c++23] Add {ceil,floor,round,roundeven,trunc}bf16 math functions

libc/config/baremetal/aarch64/entrypoints.txt

@@ -757,7 +757,12 @@ endif()
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 if(LIBC_COMPILER_HAS_FIXED_POINT)

libc/config/baremetal/arm/entrypoints.txt

@@ -760,7 +760,12 @@ endif()
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 if(LIBC_COMPILER_HAS_FIXED_POINT)

libc/config/baremetal/riscv/entrypoints.txt

@@ -760,7 +760,12 @@ endif()
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 if(LIBC_COMPILER_HAS_FIXED_POINT)

libc/config/darwin/aarch64/entrypoints.txt

@@ -590,7 +590,12 @@ endif()
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 if(LIBC_COMPILER_HAS_FIXED_POINT)

libc/config/darwin/x86_64/entrypoints.txt

@@ -233,7 +233,12 @@ set(TARGET_LIBM_ENTRYPOINTS
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 set(TARGET_LLVMLIBC_ENTRYPOINTS

libc/config/gpu/amdgpu/entrypoints.txt

@@ -616,7 +616,12 @@ endif()
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 set(TARGET_LLVMLIBC_ENTRYPOINTS

libc/config/gpu/nvptx/entrypoints.txt

@@ -617,7 +617,12 @@ endif()
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 set(TARGET_LLVMLIBC_ENTRYPOINTS

libc/config/linux/aarch64/entrypoints.txt

@@ -844,7 +844,12 @@ endif()
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 if(LLVM_LIBC_FULL_BUILD)

libc/config/linux/arm/entrypoints.txt

@@ -460,7 +460,12 @@ set(TARGET_LIBM_ENTRYPOINTS
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 set(TARGET_LLVMLIBC_ENTRYPOINTS

libc/config/linux/riscv/entrypoints.txt

@@ -863,7 +863,12 @@ endif()
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 if(LIBC_COMPILER_HAS_FIXED_POINT)

libc/config/linux/x86_64/entrypoints.txt

@@ -893,10 +893,14 @@ if(LIBC_TYPES_HAS_FLOAT128)
   )
 endif()
 
-
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 if(LIBC_COMPILER_HAS_FIXED_POINT)

libc/config/windows/entrypoints.txt

@@ -306,7 +306,12 @@ set(TARGET_LIBM_ENTRYPOINTS
 
 list(APPEND TARGET_LIBM_ENTRYPOINTS
   # bfloat16 entrypoints
+  libc.src.math.ceilbf16
   libc.src.math.fabsbf16
+  libc.src.math.floorbf16
+  libc.src.math.roundbf16
+  libc.src.math.roundevenbf16
+  libc.src.math.truncbf16
 )
 
 set(TARGET_LLVMLIBC_ENTRYPOINTS

libc/src/math/CMakeLists.txt

@@ -91,6 +91,7 @@ add_math_entrypoint_object(ceilf)
 add_math_entrypoint_object(ceill)
 add_math_entrypoint_object(ceilf16)
 add_math_entrypoint_object(ceilf128)
+add_math_entrypoint_object(ceilbf16)
 
 add_math_entrypoint_object(copysign)
 add_math_entrypoint_object(copysignf)
@@ -214,6 +215,7 @@ add_math_entrypoint_object(floorf)
 add_math_entrypoint_object(floorl)
 add_math_entrypoint_object(floorf16)
 add_math_entrypoint_object(floorf128)
+add_math_entrypoint_object(floorbf16)
 
 add_math_entrypoint_object(fma)
 add_math_entrypoint_object(fmaf)
@@ -463,12 +465,14 @@ add_math_entrypoint_object(roundf)
 add_math_entrypoint_object(roundl)
 add_math_entrypoint_object(roundf16)
 add_math_entrypoint_object(roundf128)
+add_math_entrypoint_object(roundbf16)
 
 add_math_entrypoint_object(roundeven)
 add_math_entrypoint_object(roundevenf)
 add_math_entrypoint_object(roundevenl)
 add_math_entrypoint_object(roundevenf16)
 add_math_entrypoint_object(roundevenf128)
+add_math_entrypoint_object(roundevenbf16)
 
 add_math_entrypoint_object(scalbln)
 add_math_entrypoint_object(scalblnf)
@@ -546,6 +550,7 @@ add_math_entrypoint_object(truncf)
 add_math_entrypoint_object(truncl)
 add_math_entrypoint_object(truncf16)
 add_math_entrypoint_object(truncf128)
+add_math_entrypoint_object(truncbf16)
 
 add_math_entrypoint_object(ufromfp)
 add_math_entrypoint_object(ufromfpf)

libc/src/math/ceilbf16.h

@@ -0,0 +1,21 @@
+//===-- Implementation header for ceilbf16 ----------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_CEILBF16_H
+#define LLVM_LIBC_SRC_MATH_CEILBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 ceilbf16(bfloat16 x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_CEILBF16_H

libc/src/math/floorbf16.h

@@ -0,0 +1,21 @@
+//===-- Implementation header for floorbf16 ---------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIBC_SRC_MATH_FLOORBF16_H
+#define LLVM_LIBC_SRC_MATH_FLOORBF16_H
+
+#include "src/__support/macros/config.h"
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+bfloat16 floorbf16(bfloat16 x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_MATH_FLOORBF16_H

libc/src/math/generic/CMakeLists.txt

@@ -156,6 +156,22 @@ add_entrypoint_object(
     libc.src.__support.FPUtil.nearest_integer_operations
 )
 
+add_entrypoint_object(
+    ceilbf16
+  SRCS
+    ceilbf16.cpp
+  HDRS
+    ../ceilbf16.h
+  DEPENDS
+    libc.src.__support.common
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+    libc.src.__support.macros.properties.types
+  FLAGS
+    ROUND_OPT
+)
+
 add_entrypoint_object(
   daddl
   SRCS
@@ -801,6 +817,22 @@ add_entrypoint_object(
     libc.src.__support.FPUtil.nearest_integer_operations
 )
 
+add_entrypoint_object(
+    truncbf16
+  SRCS
+    truncbf16.cpp
+  HDRS
+    ../truncbf16.h
+  DEPENDS
+    libc.src.__support.common
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+    libc.src.__support.macros.properties.types
+  FLAGS
+    ROUND_OPT
+)
+
 add_entrypoint_object(
   floor
   SRCS
@@ -861,6 +893,22 @@ add_entrypoint_object(
     libc.src.__support.FPUtil.nearest_integer_operations
 )
 
+add_entrypoint_object(
+    floorbf16
+  SRCS
+    floorbf16.cpp
+  HDRS
+    ../floorbf16.h
+  DEPENDS
+    libc.src.__support.common
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+    libc.src.__support.macros.properties.types
+  FLAGS
+    ROUND_OPT
+)
+
 add_entrypoint_object(
   round
   SRCS
@@ -921,6 +969,22 @@ add_entrypoint_object(
     libc.src.__support.FPUtil.nearest_integer_operations
 )
 
+add_entrypoint_object(
+    roundbf16
+  SRCS
+    roundbf16.cpp
+  HDRS
+    ../roundbf16.h
+  DEPENDS
+    libc.src.__support.common
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+    libc.src.__support.macros.properties.types
+  FLAGS
+    ROUND_OPT
+)
+
 add_entrypoint_object(
   roundeven
   SRCS
@@ -981,6 +1045,22 @@ add_entrypoint_object(
     libc.src.__support.FPUtil.nearest_integer_operations
 )
 
+add_entrypoint_object(
+    roundevenbf16
+  SRCS
+    roundevenbf16.cpp
+  HDRS
+    ../roundevenbf16.h
+  DEPENDS
+    libc.src.__support.common
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+    libc.src.__support.macros.properties.types
+  FLAGS
+    ROUND_OPT
+)
+
 add_entrypoint_object(
   lround
   SRCS

libc/src/math/generic/ceilbf16.cpp

@@ -0,0 +1,19 @@
+//===-- Implementation of ceilbf16 function -------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/ceilbf16.h"
+#include "src/__support/FPUtil/NearestIntegerOperations.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, ceilbf16, (bfloat16 x)) { return fputil::ceil(x); }
+
+} // namespace LIBC_NAMESPACE_DECL

libc/src/math/generic/floorbf16.cpp

@@ -0,0 +1,21 @@
+//===-- Implementation of floorbf16 function ------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/math/floorbf16.h"
+#include "src/__support/FPUtil/NearestIntegerOperations.h"
+#include "src/__support/FPUtil/bfloat16.h"
+#include "src/__support/common.h"
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(bfloat16, floorbf16, (bfloat16 x)) {
+  return fputil::floor(x);
+}
+
+} // namespace LIBC_NAMESPACE_DECL