[libc-commits] [libc] [libc][math][c23] Add f16{add, sub}{, l, f128} C23 math functions (PR #97072)
via libc-commits
libc-commits at lists.llvm.org
Tue Jul 2 09:38:45 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-libc
Author: OverMighty (overmighty)
<details>
<summary>Changes</summary>
Part of #<!-- -->93566.
---
Patch is 30.31 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/97072.diff
31 Files Affected:
- (modified) libc/config/linux/aarch64/entrypoints.txt (+2)
- (modified) libc/config/linux/x86_64/entrypoints.txt (+6)
- (modified) libc/docs/math/index.rst (+2-2)
- (modified) libc/spec/llvm_libc_ext.td (+4)
- (modified) libc/spec/stdc.td (+4)
- (modified) libc/src/math/CMakeLists.txt (+6)
- (added) libc/src/math/f16add.h (+20)
- (added) libc/src/math/f16addf128.h (+20)
- (added) libc/src/math/f16addl.h (+20)
- (added) libc/src/math/f16sub.h (+20)
- (added) libc/src/math/f16subf128.h (+20)
- (added) libc/src/math/f16subl.h (+20)
- (modified) libc/src/math/generic/CMakeLists.txt (+78)
- (added) libc/src/math/generic/f16add.cpp (+19)
- (added) libc/src/math/generic/f16addf128.cpp (+19)
- (added) libc/src/math/generic/f16addl.cpp (+19)
- (added) libc/src/math/generic/f16sub.cpp (+19)
- (added) libc/src/math/generic/f16subf128.cpp (+19)
- (added) libc/src/math/generic/f16subl.cpp (+19)
- (modified) libc/test/src/math/CMakeLists.txt (+52)
- (added) libc/test/src/math/f16add_test.cpp (+13)
- (added) libc/test/src/math/f16addl_test.cpp (+13)
- (added) libc/test/src/math/f16sub_test.cpp (+13)
- (added) libc/test/src/math/f16subl_test.cpp (+13)
- (modified) libc/test/src/math/smoke/CMakeLists.txt (+87)
- (added) libc/test/src/math/smoke/f16add_test.cpp (+13)
- (added) libc/test/src/math/smoke/f16addf128_test.cpp (+13)
- (added) libc/test/src/math/smoke/f16addl_test.cpp (+13)
- (added) libc/test/src/math/smoke/f16sub_test.cpp (+13)
- (added) libc/test/src/math/smoke/f16subf128_test.cpp (+13)
- (added) libc/test/src/math/smoke/f16subl_test.cpp (+13)
``````````diff
diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index ff35e8fffec19..940df63e3912b 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -508,12 +508,14 @@ if(LIBC_TYPES_HAS_FLOAT16)
libc.src.math.canonicalizef16
libc.src.math.ceilf16
libc.src.math.copysignf16
+ libc.src.math.f16add
libc.src.math.f16addf
libc.src.math.f16div
libc.src.math.f16divf
libc.src.math.f16fmaf
libc.src.math.f16sqrt
libc.src.math.f16sqrtf
+ libc.src.math.f16sub
libc.src.math.f16subf
libc.src.math.fabsf16
libc.src.math.fdimf16
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 3eefa129c9758..09f04fb31dfd8 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -538,7 +538,9 @@ if(LIBC_TYPES_HAS_FLOAT16)
libc.src.math.canonicalizef16
libc.src.math.ceilf16
libc.src.math.copysignf16
+ libc.src.math.f16add
libc.src.math.f16addf
+ libc.src.math.f16addl
libc.src.math.f16div
libc.src.math.f16divf
libc.src.math.f16divl
@@ -548,7 +550,9 @@ if(LIBC_TYPES_HAS_FLOAT16)
libc.src.math.f16sqrt
libc.src.math.f16sqrtf
libc.src.math.f16sqrtl
+ libc.src.math.f16sub
libc.src.math.f16subf
+ libc.src.math.f16subl
libc.src.math.fabsf16
libc.src.math.fdimf16
libc.src.math.floorf16
@@ -601,9 +605,11 @@ if(LIBC_TYPES_HAS_FLOAT16)
if(LIBC_TYPES_HAS_FLOAT128)
list(APPEND TARGET_LIBM_ENTRYPOINTS
# math.h C23 mixed _Float16 and _Float128 entrypoints
+ libc.src.math.f16addf128
libc.src.math.f16divf128
libc.src.math.f16fmaf128
libc.src.math.f16sqrtf128
+ libc.src.math.f16subf128
)
endif()
endif()
diff --git a/libc/docs/math/index.rst b/libc/docs/math/index.rst
index e4da3d42baf7a..04f63d03778a8 100644
--- a/libc/docs/math/index.rst
+++ b/libc/docs/math/index.rst
@@ -124,13 +124,13 @@ Basic Operations
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
| dsub | N/A | N/A | | N/A | | 7.12.14.2 | F.10.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
-| f16add | |check|\* | | | N/A | | 7.12.14.1 | F.10.11 |
+| f16add | |check|\* | |check|\* | |check|\* | N/A | |check| | 7.12.14.1 | F.10.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
| f16div | |check|\* | |check|\* | |check|\* | N/A | |check| | 7.12.14.4 | F.10.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
| f16fma | |check| | |check| | |check| | N/A | |check| | 7.12.14.5 | F.10.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
-| f16sub | |check|\* | | | N/A | | 7.12.14.2 | F.10.11 |
+| f16sub | |check|\* | |check|\* | |check|\* | N/A | |check| | 7.12.14.2 | F.10.11 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
| fabs | |check| | |check| | |check| | |check| | |check| | 7.12.7.3 | F.10.4.3 |
+------------------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
diff --git a/libc/spec/llvm_libc_ext.td b/libc/spec/llvm_libc_ext.td
index ff7831f8bce16..b994e7ca56a93 100644
--- a/libc/spec/llvm_libc_ext.td
+++ b/libc/spec/llvm_libc_ext.td
@@ -57,9 +57,13 @@ def LLVMLibcExt : StandardSpec<"llvm_libc_ext"> {
[], // Types
[], // Enumerations
[
+ GuardedFunctionSpec<"f16add", RetValSpec<Float16Type>, [ArgSpec<DoubleType>, ArgSpec<DoubleType>], "LIBC_TYPES_HAS_FLOAT16">,
GuardedFunctionSpec<"f16addf", RetValSpec<Float16Type>, [ArgSpec<FloatType>, ArgSpec<FloatType>], "LIBC_TYPES_HAS_FLOAT16">,
+ GuardedFunctionSpec<"f16addl", RetValSpec<Float16Type>, [ArgSpec<LongDoubleType>, ArgSpec<LongDoubleType>], "LIBC_TYPES_HAS_FLOAT16">,
+ GuardedFunctionSpec<"f16sub", RetValSpec<Float16Type>, [ArgSpec<DoubleType>, ArgSpec<DoubleType>], "LIBC_TYPES_HAS_FLOAT16">,
GuardedFunctionSpec<"f16subf", RetValSpec<Float16Type>, [ArgSpec<FloatType>, ArgSpec<FloatType>], "LIBC_TYPES_HAS_FLOAT16">,
+ GuardedFunctionSpec<"f16subl", RetValSpec<Float16Type>, [ArgSpec<LongDoubleType>, ArgSpec<LongDoubleType>], "LIBC_TYPES_HAS_FLOAT16">,
GuardedFunctionSpec<"f16div", RetValSpec<Float16Type>, [ArgSpec<DoubleType>, ArgSpec<DoubleType>], "LIBC_TYPES_HAS_FLOAT16">,
GuardedFunctionSpec<"f16divf", RetValSpec<Float16Type>, [ArgSpec<FloatType>, ArgSpec<FloatType>], "LIBC_TYPES_HAS_FLOAT16">,
diff --git a/libc/spec/stdc.td b/libc/spec/stdc.td
index 6e59062dde727..9ff40bf76700c 100644
--- a/libc/spec/stdc.td
+++ b/libc/spec/stdc.td
@@ -729,6 +729,10 @@ def StdC : StandardSpec<"stdc"> {
GuardedFunctionSpec<"setpayloadsigf16", RetValSpec<IntType>, [ArgSpec<Float16Ptr>, ArgSpec<Float16Type>], "LIBC_TYPES_HAS_FLOAT16">,
+ GuardedFunctionSpec<"f16addf128", RetValSpec<Float16Type>, [ArgSpec<Float128Type>, ArgSpec<Float128Type>], "LIBC_TYPES_HAS_FLOAT16_AND_FLOAT128">,
+
+ GuardedFunctionSpec<"f16subf128", RetValSpec<Float16Type>, [ArgSpec<Float128Type>, ArgSpec<Float128Type>], "LIBC_TYPES_HAS_FLOAT16_AND_FLOAT128">,
+
GuardedFunctionSpec<"f16divf128", RetValSpec<Float16Type>, [ArgSpec<Float128Type>, ArgSpec<Float128Type>], "LIBC_TYPES_HAS_FLOAT16_AND_FLOAT128">,
GuardedFunctionSpec<"f16sqrtf128", RetValSpec<Float16Type>, [ArgSpec<Float128Type>], "LIBC_TYPES_HAS_FLOAT16_AND_FLOAT128">,
diff --git a/libc/src/math/CMakeLists.txt b/libc/src/math/CMakeLists.txt
index 5b20913134fdf..0983d268bd4b8 100644
--- a/libc/src/math/CMakeLists.txt
+++ b/libc/src/math/CMakeLists.txt
@@ -99,7 +99,10 @@ add_math_entrypoint_object(exp10f)
add_math_entrypoint_object(expm1)
add_math_entrypoint_object(expm1f)
+add_math_entrypoint_object(f16add)
add_math_entrypoint_object(f16addf)
+add_math_entrypoint_object(f16addl)
+add_math_entrypoint_object(f16addf128)
add_math_entrypoint_object(f16div)
add_math_entrypoint_object(f16divf)
@@ -116,7 +119,10 @@ add_math_entrypoint_object(f16sqrtf)
add_math_entrypoint_object(f16sqrtl)
add_math_entrypoint_object(f16sqrtf128)
+add_math_entrypoint_object(f16sub)
add_math_entrypoint_object(f16subf)
+add_math_entrypoint_object(f16subl)
+add_math_entrypoint_object(f16subf128)
add_math_entrypoint_object(fabs)
add_math_entrypoint_object(fabsf)
diff --git a/libc/src/math/f16add.h b/libc/src/math/f16add.h
new file mode 100644
index 0000000000000..763a0787d860d
--- /dev/null
+++ b/libc/src/math/f16add.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for f16add ------------------------*- 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_F16ADD_H
+#define LLVM_LIBC_SRC_MATH_F16ADD_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 f16add(double x, double y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_F16ADD_H
diff --git a/libc/src/math/f16addf128.h b/libc/src/math/f16addf128.h
new file mode 100644
index 0000000000000..284ce1d303775
--- /dev/null
+++ b/libc/src/math/f16addf128.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for f16addf128 --------------------*- 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_F16ADDF128_H
+#define LLVM_LIBC_SRC_MATH_F16ADDF128_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 f16addf128(float128 x, float128 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_F16ADDF128_H
diff --git a/libc/src/math/f16addl.h b/libc/src/math/f16addl.h
new file mode 100644
index 0000000000000..6a7267a10d0c6
--- /dev/null
+++ b/libc/src/math/f16addl.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for f16addl -----------------------*- 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_F16ADDL_H
+#define LLVM_LIBC_SRC_MATH_F16ADDL_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 f16addl(long double x, long double y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_F16ADDL_H
diff --git a/libc/src/math/f16sub.h b/libc/src/math/f16sub.h
new file mode 100644
index 0000000000000..66f82daada019
--- /dev/null
+++ b/libc/src/math/f16sub.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for f16sub ------------------------*- 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_F16SUB_H
+#define LLVM_LIBC_SRC_MATH_F16SUB_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 f16sub(double x, double y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_F16SUB_H
diff --git a/libc/src/math/f16subf128.h b/libc/src/math/f16subf128.h
new file mode 100644
index 0000000000000..eb674297ba266
--- /dev/null
+++ b/libc/src/math/f16subf128.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for f16subf128 --------------------*- 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_F16SUBF128_H
+#define LLVM_LIBC_SRC_MATH_F16SUBF128_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 f16subf128(float128 x, float128 y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_F16SUBF128_H
diff --git a/libc/src/math/f16subl.h b/libc/src/math/f16subl.h
new file mode 100644
index 0000000000000..43b44a57a604e
--- /dev/null
+++ b/libc/src/math/f16subl.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for f16subl -----------------------*- 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_F16SUBL_H
+#define LLVM_LIBC_SRC_MATH_F16SUBL_H
+
+#include "src/__support/macros/properties/types.h"
+
+namespace LIBC_NAMESPACE {
+
+float16 f16subl(long double x, long double y);
+
+} // namespace LIBC_NAMESPACE
+
+#endif // LLVM_LIBC_SRC_MATH_F16SUBL_H
diff --git a/libc/src/math/generic/CMakeLists.txt b/libc/src/math/generic/CMakeLists.txt
index d6ea8c54174b6..2e4ed8f2961da 100644
--- a/libc/src/math/generic/CMakeLists.txt
+++ b/libc/src/math/generic/CMakeLists.txt
@@ -3795,6 +3795,19 @@ add_entrypoint_object(
-O3
)
+add_entrypoint_object(
+ f16add
+ SRCS
+ f16add.cpp
+ HDRS
+ ../f16add.h
+ DEPENDS
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.generic.add_sub
+ COMPILE_OPTIONS
+ -O3
+)
+
add_entrypoint_object(
f16addf
SRCS
@@ -3808,6 +3821,45 @@ add_entrypoint_object(
-O3
)
+add_entrypoint_object(
+ f16addl
+ SRCS
+ f16addl.cpp
+ HDRS
+ ../f16addl.h
+ DEPENDS
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.generic.add_sub
+ COMPILE_OPTIONS
+ -O3
+)
+
+add_entrypoint_object(
+ f16addf128
+ SRCS
+ f16addf128.cpp
+ HDRS
+ ../f16addf128.h
+ DEPENDS
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.generic.add_sub
+ COMPILE_OPTIONS
+ -O3
+)
+
+add_entrypoint_object(
+ f16sub
+ SRCS
+ f16sub.cpp
+ HDRS
+ ../f16sub.h
+ DEPENDS
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.generic.add_sub
+ COMPILE_OPTIONS
+ -O3
+)
+
add_entrypoint_object(
f16subf
SRCS
@@ -3821,6 +3873,32 @@ add_entrypoint_object(
-O3
)
+add_entrypoint_object(
+ f16subl
+ SRCS
+ f16subl.cpp
+ HDRS
+ ../f16subl.h
+ DEPENDS
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.generic.add_sub
+ COMPILE_OPTIONS
+ -O3
+)
+
+add_entrypoint_object(
+ f16subf128
+ SRCS
+ f16subf128.cpp
+ HDRS
+ ../f16subf128.h
+ DEPENDS
+ libc.src.__support.macros.properties.types
+ libc.src.__support.FPUtil.generic.add_sub
+ COMPILE_OPTIONS
+ -O3
+)
+
add_entrypoint_object(
f16div
SRCS
diff --git a/libc/src/math/generic/f16add.cpp b/libc/src/math/generic/f16add.cpp
new file mode 100644
index 0000000000000..ef9b43e9f46aa
--- /dev/null
+++ b/libc/src/math/generic/f16add.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of f16add 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/f16add.h"
+#include "src/__support/FPUtil/generic/add_sub.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, f16add, (double x, double y)) {
+ return fputil::generic::add<float16>(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/f16addf128.cpp b/libc/src/math/generic/f16addf128.cpp
new file mode 100644
index 0000000000000..61c458f7d5de1
--- /dev/null
+++ b/libc/src/math/generic/f16addf128.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of f16addf128 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/f16addf128.h"
+#include "src/__support/FPUtil/generic/add_sub.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, f16addf128, (float128 x, float128 y)) {
+ return fputil::generic::add<float16>(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/f16addl.cpp b/libc/src/math/generic/f16addl.cpp
new file mode 100644
index 0000000000000..d32d09d0dbb83
--- /dev/null
+++ b/libc/src/math/generic/f16addl.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of f16addl 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/f16addl.h"
+#include "src/__support/FPUtil/generic/add_sub.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, f16addl, (long double x, long double y)) {
+ return fputil::generic::add<float16>(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/f16sub.cpp b/libc/src/math/generic/f16sub.cpp
new file mode 100644
index 0000000000000..114c8ad3155e1
--- /dev/null
+++ b/libc/src/math/generic/f16sub.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of f16sub 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/f16sub.h"
+#include "src/__support/FPUtil/generic/add_sub.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, f16sub, (double x, double y)) {
+ return fputil::generic::sub<float16>(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/f16subf128.cpp b/libc/src/math/generic/f16subf128.cpp
new file mode 100644
index 0000000000000..1f9ff28abdf29
--- /dev/null
+++ b/libc/src/math/generic/f16subf128.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of f16subf128 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/f16subf128.h"
+#include "src/__support/FPUtil/generic/add_sub.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, f16subf128, (float128 x, float128 y)) {
+ return fputil::generic::sub<float16>(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/src/math/generic/f16subl.cpp b/libc/src/math/generic/f16subl.cpp
new file mode 100644
index 0000000000000..31970af9a2366
--- /dev/null
+++ b/libc/src/math/generic/f16subl.cpp
@@ -0,0 +1,19 @@
+//===-- Implementation of f16subl 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/f16subl.h"
+#include "src/__support/FPUtil/generic/add_sub.h"
+#include "src/__support/common.h"
+
+namespace LIBC_NAMESPACE {
+
+LLVM_LIBC_FUNCTION(float16, f16subl, (long double x, long double y)) {
+ return fputil::generic::sub<float16>(x, y);
+}
+
+} // namespace LIBC_NAMESPACE
diff --git a/libc/test/src/math/CMakeLists.txt b/libc/test/...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/97072
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