[libc][complex] Implement different flavors of the `cproj` function #119722

Sh0g0-1758 · 2024-12-12T17:03:35Z

Refer section 7.3.9.5 of ISO/IEC 9899:2023

llvmbot · 2024-12-12T17:04:10Z

@llvm/pr-subscribers-libc

Author: Shourya Goel (Sh0g0-1758)

Changes

Refer section 7.3.9.5 of ISO/IEC 9899:2023

Patch is 30.98 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/119722.diff

25 Files Affected:

(modified) libc/config/linux/aarch64/entrypoints.txt (+5)
(modified) libc/config/linux/arm/entrypoints.txt (+3)
(modified) libc/config/linux/riscv/entrypoints.txt (+4)
(modified) libc/config/linux/x86_64/entrypoints.txt (+5)
(modified) libc/docs/headers/complex.rst (+1-1)
(modified) libc/hdrgen/yaml/complex.yaml (+32)
(modified) libc/src/complex/CMakeLists.txt (+6)
(added) libc/src/complex/cproj.h (+20)
(added) libc/src/complex/cprojf.h (+20)
(added) libc/src/complex/cprojf128.h (+27)
(added) libc/src/complex/cprojf16.h (+27)
(added) libc/src/complex/cprojl.h (+20)
(modified) libc/src/complex/generic/CMakeLists.txt (+74)
(added) libc/src/complex/generic/cproj.cpp (+29)
(added) libc/src/complex/generic/cprojf.cpp (+29)
(added) libc/src/complex/generic/cprojf128.cpp (+33)
(added) libc/src/complex/generic/cprojf16.cpp (+33)
(added) libc/src/complex/generic/cprojl.cpp (+29)
(modified) libc/test/src/complex/CMakeLists.txt (+60)
(added) libc/test/src/complex/CprojTest.h (+131)
(added) libc/test/src/complex/cproj_test.cpp (+13)
(added) libc/test/src/complex/cprojf128_test.cpp (+17)
(added) libc/test/src/complex/cprojf16_test.cpp (+17)
(added) libc/test/src/complex/cprojf_test.cpp (+13)
(added) libc/test/src/complex/cprojl_test.cpp (+13)

diff --git a/libc/config/linux/aarch64/entrypoints.txt b/libc/config/linux/aarch64/entrypoints.txt
index c2179938b40d18..b949e4b4f67ba0 100644
--- a/libc/config/linux/aarch64/entrypoints.txt
+++ b/libc/config/linux/aarch64/entrypoints.txt
@@ -370,6 +370,9 @@ set(TARGET_LIBM_ENTRYPOINTS
     libc.src.complex.conj
     libc.src.complex.conjf
     libc.src.complex.conjl
+    libc.src.complex.cproj
+    libc.src.complex.cprojf
+    libc.src.complex.cprojl
 
     # fenv.h entrypoints
     libc.src.fenv.feclearexcept
@@ -622,6 +625,7 @@ if(LIBC_TYPES_HAS_FLOAT16)
     # libc.src.complex.crealf16
     # libc.src.complex.cimagf16
     # libc.src.complex.conjf16
+    # libc.src.complex.cprojf16
     
     # math.h C23 _Float16 entrypoints
     libc.src.math.canonicalizef16
@@ -728,6 +732,7 @@ if(LIBC_TYPES_HAS_FLOAT128)
     libc.src.complex.crealf128
     libc.src.complex.cimagf128
     libc.src.complex.conjf128
+    libc.src.complex.cprojf128
 
     # math.h C23 _Float128 entrypoints
     libc.src.math.canonicalizef128
diff --git a/libc/config/linux/arm/entrypoints.txt b/libc/config/linux/arm/entrypoints.txt
index f5e98277273961..83f4dfaaa2d0f2 100644
--- a/libc/config/linux/arm/entrypoints.txt
+++ b/libc/config/linux/arm/entrypoints.txt
@@ -212,6 +212,9 @@ set(TARGET_LIBM_ENTRYPOINTS
     libc.src.complex.conj
     libc.src.complex.conjf
     libc.src.complex.conjl
+    libc.src.complex.cproj
+    libc.src.complex.cprojf
+    libc.src.complex.cprojl
     
     # fenv.h entrypoints
     libc.src.fenv.feclearexcept
diff --git a/libc/config/linux/riscv/entrypoints.txt b/libc/config/linux/riscv/entrypoints.txt
index e2df6aca38bf9d..19980f79e7be81 100644
--- a/libc/config/linux/riscv/entrypoints.txt
+++ b/libc/config/linux/riscv/entrypoints.txt
@@ -367,6 +367,9 @@ set(TARGET_LIBM_ENTRYPOINTS
     libc.src.complex.conj
     libc.src.complex.conjf
     libc.src.complex.conjl
+    libc.src.complex.cproj
+    libc.src.complex.cprojf
+    libc.src.complex.cprojl
 
     # fenv.h entrypoints
     libc.src.fenv.feclearexcept
@@ -623,6 +626,7 @@ if(LIBC_TYPES_HAS_FLOAT128)
     libc.src.complex.crealf128
     libc.src.complex.cimagf128
     libc.src.complex.conjf128
+    libc.src.complex.cprojf128
     
     # math.h C23 _Float128 entrypoints
     libc.src.math.canonicalizef128
diff --git a/libc/config/linux/x86_64/entrypoints.txt b/libc/config/linux/x86_64/entrypoints.txt
index 68d0501d3d3587..c5a2797d607ef7 100644
--- a/libc/config/linux/x86_64/entrypoints.txt
+++ b/libc/config/linux/x86_64/entrypoints.txt
@@ -370,6 +370,9 @@ set(TARGET_LIBM_ENTRYPOINTS
     libc.src.complex.conj
     libc.src.complex.conjf
     libc.src.complex.conjl
+    libc.src.complex.cproj
+    libc.src.complex.cprojf
+    libc.src.complex.cprojl
     
     # fenv.h entrypoints
     libc.src.fenv.feclearexcept
@@ -627,6 +630,7 @@ if(LIBC_TYPES_HAS_FLOAT16)
     libc.src.complex.crealf16
     libc.src.complex.cimagf16
     libc.src.complex.conjf16
+    libc.src.complex.cprojf16
 
     # math.h C23 _Float16 entrypoints
     libc.src.math.canonicalizef16
@@ -737,6 +741,7 @@ if(LIBC_TYPES_HAS_FLOAT128)
     # libc.src.complex.crealf128
     # libc.src.complex.cimagf128
     # libc.src.complex.conjf128
+    # libc.src.complex.cprojf128
     
     # math.h C23 _Float128 entrypoints
     libc.src.math.canonicalizef128
diff --git a/libc/docs/headers/complex.rst b/libc/docs/headers/complex.rst
index b6a340543fad1f..272cf00c883bc4 100644
--- a/libc/docs/headers/complex.rst
+++ b/libc/docs/headers/complex.rst
@@ -59,7 +59,7 @@ Functions
 +-----------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
 | conj      | |check|          | |check|         | |check|                | |check|              | |check|                | 7.3.9.4                | N/A                        |
 +-----------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
-| cproj     |                  |                 |                        |                      |                        | 7.3.9.5                | N/A                        |
+| cproj     | |check|          | |check|         | |check|                | |check|              | |check|                | 7.3.9.5                | N/A                        |
 +-----------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
 | creal     | |check|          | |check|         | |check|                | |check|              | |check|                | 7.3.9.6                | N/A                        |
 +-----------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
diff --git a/libc/hdrgen/yaml/complex.yaml b/libc/hdrgen/yaml/complex.yaml
index be0d3c9ae59b47..cd81de7dd9e204 100644
--- a/libc/hdrgen/yaml/complex.yaml
+++ b/libc/hdrgen/yaml/complex.yaml
@@ -103,3 +103,35 @@ functions:
     arguments:
       - type: cfloat128
     guard: LIBC_TYPES_HAS_CFLOAT128
+  - name: cproj
+    standards:
+      - stdc
+    return_type: _Complex double
+    arguments:
+      - type: _Complex double
+  - name: cprojf
+    standards:
+      - stdc
+    return_type: _Complex float
+    arguments:
+      - type: _Complex float
+  - name: cprojl
+    standards:
+      - stdc
+    return_type: _Complex long double
+    arguments:
+      - type: _Complex long double
+  - name: cprojf16
+    standards:
+      - stdc
+    return_type: cfloat16
+    arguments:
+      - type: cfloat16
+    guard: LIBC_TYPES_HAS_CFLOAT16
+  - name: cprojf128
+    standards:
+      - stdc
+    return_type: cfloat128
+    arguments:
+      - type: cfloat128
+    guard: LIBC_TYPES_HAS_CFLOAT128
diff --git a/libc/src/complex/CMakeLists.txt b/libc/src/complex/CMakeLists.txt
index 7306e2fe925e3a..bc66a5445d7274 100644
--- a/libc/src/complex/CMakeLists.txt
+++ b/libc/src/complex/CMakeLists.txt
@@ -30,3 +30,9 @@ add_complex_entrypoint_object(conjf)
 add_complex_entrypoint_object(conjl)
 add_complex_entrypoint_object(conjf16)
 add_complex_entrypoint_object(conjf128)
+
+add_complex_entrypoint_object(cproj)
+add_complex_entrypoint_object(cprojf)
+add_complex_entrypoint_object(cprojl)
+add_complex_entrypoint_object(cprojf16)
+add_complex_entrypoint_object(cprojf128)
diff --git a/libc/src/complex/cproj.h b/libc/src/complex/cproj.h
new file mode 100644
index 00000000000000..62d41bceec3e30
--- /dev/null
+++ b/libc/src/complex/cproj.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for cproj -------------------------*- 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_COMPLEX_CPROJ_H
+#define LLVM_LIBC_SRC_COMPLEX_CPROJ_H
+
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+_Complex double cproj(_Complex double x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_COMPLEX_CPROJ_H
diff --git a/libc/src/complex/cprojf.h b/libc/src/complex/cprojf.h
new file mode 100644
index 00000000000000..76124f91177763
--- /dev/null
+++ b/libc/src/complex/cprojf.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for cprojf ------------------------*- 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_COMPLEX_CPROJF_H
+#define LLVM_LIBC_SRC_COMPLEX_CPROJF_H
+
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+_Complex float cprojf(_Complex float x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_COMPLEX_CPROJF_H
diff --git a/libc/src/complex/cprojf128.h b/libc/src/complex/cprojf128.h
new file mode 100644
index 00000000000000..8de090b2c49b34
--- /dev/null
+++ b/libc/src/complex/cprojf128.h
@@ -0,0 +1,27 @@
+//===-- Implementation header for cprojf128 ---------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/__support/macros/properties/complex_types.h"
+#include "src/__support/macros/properties/types.h"
+
+#if defined(LIBC_TYPES_HAS_CFLOAT128)
+
+#ifndef LLVM_LIBC_SRC_COMPLEX_CPROJF128_H
+#define LLVM_LIBC_SRC_COMPLEX_CPROJF128_H
+
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+cfloat128 cprojf128(cfloat128 x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_COMPLEX_CPROJF128_H
+
+#endif // LIBC_TYPES_HAS_CFLOAT128
diff --git a/libc/src/complex/cprojf16.h b/libc/src/complex/cprojf16.h
new file mode 100644
index 00000000000000..e744011eb10c34
--- /dev/null
+++ b/libc/src/complex/cprojf16.h
@@ -0,0 +1,27 @@
+//===-- Implementation header for cprojf16 ----------------------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "src/__support/macros/properties/complex_types.h"
+#include "src/__support/macros/properties/types.h"
+
+#if defined(LIBC_TYPES_HAS_CFLOAT16)
+
+#ifndef LLVM_LIBC_SRC_COMPLEX_CPROJF16_H
+#define LLVM_LIBC_SRC_COMPLEX_CPROJF16_H
+
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+cfloat16 cprojf16(cfloat16 x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_COMPLEX_CPROJF16_H
+
+#endif // LIBC_TYPES_HAS_CFLOAT16
diff --git a/libc/src/complex/cprojl.h b/libc/src/complex/cprojl.h
new file mode 100644
index 00000000000000..ecc8dce8f85354
--- /dev/null
+++ b/libc/src/complex/cprojl.h
@@ -0,0 +1,20 @@
+//===-- Implementation header for cprojl ------------------------*- 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_COMPLEX_CPROJL_H
+#define LLVM_LIBC_SRC_COMPLEX_CPROJL_H
+
+#include "src/__support/macros/config.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+_Complex long double cprojl(_Complex long double x);
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LLVM_LIBC_SRC_COMPLEX_CPROJL_H
diff --git a/libc/src/complex/generic/CMakeLists.txt b/libc/src/complex/generic/CMakeLists.txt
index cc14f89122eddd..139b3ed97af1bb 100644
--- a/libc/src/complex/generic/CMakeLists.txt
+++ b/libc/src/complex/generic/CMakeLists.txt
@@ -1,3 +1,77 @@
+add_entrypoint_object(
+  cproj
+  SRCS
+    cproj.cpp
+  HDRS
+    ../cproj.h
+  COMPILE_OPTIONS
+    ${libc_opt_high_flag}
+  DEPENDS
+    libc.src.__support.CPP.bit
+    libc.src.__support.complex_type
+    libc.src.__support.FPUtil.basic_operations
+)
+
+add_entrypoint_object(
+  cprojf
+  SRCS
+    cprojf.cpp
+  HDRS
+    ../cprojf.h
+  COMPILE_OPTIONS
+    ${libc_opt_high_flag}
+  DEPENDS
+    libc.src.__support.CPP.bit
+    libc.src.__support.complex_type
+    libc.src.__support.FPUtil.basic_operations
+)
+
+add_entrypoint_object(
+  cprojl
+  SRCS
+    cprojl.cpp
+  HDRS
+    ../cprojl.h
+  COMPILE_OPTIONS
+    ${libc_opt_high_flag}
+  DEPENDS
+    libc.src.__support.CPP.bit
+    libc.src.__support.complex_type
+    libc.src.__support.FPUtil.basic_operations
+)
+
+add_entrypoint_object(
+  cprojf16
+  SRCS
+    cprojf16.cpp
+  HDRS
+    ../cprojf16.h
+  COMPILE_OPTIONS
+    ${libc_opt_high_flag}
+  DEPENDS
+    libc.src.__support.CPP.bit
+    libc.src.__support.complex_type
+    libc.src.__support.macros.properties.types
+    libc.src.__support.macros.properties.complex_types
+    libc.src.__support.FPUtil.basic_operations
+)
+
+add_entrypoint_object(
+  cprojf128
+  SRCS
+    cprojf128.cpp
+  HDRS
+    ../cprojf128.h
+  COMPILE_OPTIONS
+    ${libc_opt_high_flag}
+  DEPENDS
+    libc.src.__support.CPP.bit
+    libc.src.__support.complex_type
+    libc.src.__support.macros.properties.types
+    libc.src.__support.macros.properties.complex_types
+    libc.src.__support.FPUtil.basic_operations
+)
+
 add_entrypoint_object(
   conj
   SRCS
diff --git a/libc/src/complex/generic/cproj.cpp b/libc/src/complex/generic/cproj.cpp
new file mode 100644
index 00000000000000..d8175a84b612c4
--- /dev/null
+++ b/libc/src/complex/generic/cproj.cpp
@@ -0,0 +1,29 @@
+//===-- Implementation of cproj 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/complex/cproj.h"
+#include "src/__support/CPP/bit.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+#include "src/__support/complex_type.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(_Complex double, cproj, (_Complex double x)) {
+  Complex<double> x_c = cpp::bit_cast<Complex<double>>(x);
+  if (fputil::FPBits<double>(x_c.real).is_inf() ||
+      fputil::FPBits<double>(x_c.imag).is_inf()) {
+    return cpp::bit_cast<_Complex double>(
+        Complex<double>{(fputil::FPBits<double>::inf(Sign::POS).get_val()),
+                        (x_c.imag > 0 ? 0.0 : -0.0)});
+  } else {
+    return x;
+  }
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/complex/generic/cprojf.cpp b/libc/src/complex/generic/cprojf.cpp
new file mode 100644
index 00000000000000..d733731959324c
--- /dev/null
+++ b/libc/src/complex/generic/cprojf.cpp
@@ -0,0 +1,29 @@
+//===-- Implementation of cprojf 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/complex/cprojf.h"
+#include "src/__support/CPP/bit.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+#include "src/__support/complex_type.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(_Complex float, cprojf, (_Complex float x)) {
+  Complex<float> x_c = cpp::bit_cast<Complex<float>>(x);
+  if (fputil::FPBits<float>(x_c.real).is_inf() ||
+      fputil::FPBits<float>(x_c.imag).is_inf()) {
+    return cpp::bit_cast<_Complex float>(
+        Complex<float>{(fputil::FPBits<float>::inf(Sign::POS).get_val()),
+                       (float)(x_c.imag > 0 ? 0.0 : -0.0)});
+  } else {
+    return x;
+  }
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/src/complex/generic/cprojf128.cpp b/libc/src/complex/generic/cprojf128.cpp
new file mode 100644
index 00000000000000..57b76da7abc354
--- /dev/null
+++ b/libc/src/complex/generic/cprojf128.cpp
@@ -0,0 +1,33 @@
+//===-- Implementation of cprojf128 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/complex/cprojf128.h"
+#if defined(LIBC_TYPES_HAS_CFLOAT128)
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+#include "src/__support/complex_type.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(cfloat128, cprojf128, (cfloat128 x)) {
+  Complex<float128> x_c = cpp::bit_cast<Complex<float128>>(x);
+  if (fputil::FPBits<float128>(x_c.real).is_inf() ||
+      fputil::FPBits<float128>(x_c.imag).is_inf()) {
+    return cpp::bit_cast<cfloat128>(
+        Complex<float128>{(fputil::FPBits<float128>::inf(Sign::POS).get_val()),
+                          (float128)(x_c.imag > 0 ? 0.0 : -0.0)});
+  } else {
+    return x;
+  }
+}
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_CFLOAT128
diff --git a/libc/src/complex/generic/cprojf16.cpp b/libc/src/complex/generic/cprojf16.cpp
new file mode 100644
index 00000000000000..4cabd65c768d63
--- /dev/null
+++ b/libc/src/complex/generic/cprojf16.cpp
@@ -0,0 +1,33 @@
+//===-- Implementation of cprojf16 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/complex/cprojf16.h"
+#if defined(LIBC_TYPES_HAS_CFLOAT16)
+
+#include "src/__support/CPP/bit.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+#include "src/__support/complex_type.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(cfloat16, cprojf16, (cfloat16 x)) {
+  Complex<float16> x_c = cpp::bit_cast<Complex<float16>>(x);
+  if (fputil::FPBits<float16>(x_c.real).is_inf() ||
+      fputil::FPBits<float16>(x_c.imag).is_inf()) {
+    return cpp::bit_cast<cfloat16>(
+        Complex<float16>{(fputil::FPBits<float16>::inf(Sign::POS).get_val()),
+                         (float16)(x_c.imag > 0 ? 0.0 : -0.0)});
+  } else {
+    return x;
+  }
+}
+
+} // namespace LIBC_NAMESPACE_DECL
+
+#endif // LIBC_TYPES_HAS_CFLOAT16
diff --git a/libc/src/complex/generic/cprojl.cpp b/libc/src/complex/generic/cprojl.cpp
new file mode 100644
index 00000000000000..57d2516b23b600
--- /dev/null
+++ b/libc/src/complex/generic/cprojl.cpp
@@ -0,0 +1,29 @@
+//===-- Implementation of cprojl 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/complex/cprojl.h"
+#include "src/__support/CPP/bit.h"
+#include "src/__support/FPUtil/BasicOperations.h"
+#include "src/__support/common.h"
+#include "src/__support/complex_type.h"
+
+namespace LIBC_NAMESPACE_DECL {
+
+LLVM_LIBC_FUNCTION(_Complex long double, cprojl, (_Complex long double x)) {
+  Complex<long double> x_c = cpp::bit_cast<Complex<long double>>(x);
+  if (fputil::FPBits<long double>(x_c.real).is_inf() ||
+      fputil::FPBits<long double>(x_c.imag).is_inf()) {
+    return cpp::bit_cast<_Complex long double>(Complex<long double>{
+        (fputil::FPBits<long double>::inf(Sign::POS).get_val()),
+        (long double)(x_c.imag > 0 ? 0.0 : -0.0)});
+  } else {
+    return x;
+  }
+}
+
+} // namespace LIBC_NAMESPACE_DECL
diff --git a/libc/test/src/complex/CMakeLists.txt b/libc/test/src/complex/CMakeLists.txt
index 0c668d9e1e8b9c..d6b62e4686a223 100644
--- a/libc/test/src/complex/CMakeLists.txt
+++ b/libc/test/src/complex/CMakeLists.txt
@@ -60,6 +60,66 @@ add_libc_test(
     LibcFPTestHelpers
 )
 
+add_libc_test(
+  cproj_test
+  SUITE
+    libc-complex-unittests
+  SRCS
+    cproj_test.cpp
+  DEPENDS
+    libc.src.complex.cproj
+  LINK_LIBRARIES
+      LibcFPTestHelpers
+)
+
+add_libc_test(
+  cprojf_test
+  SUITE
+    libc-complex-unittests
+  SRCS
+    cprojf_test.cpp
+  DEPENDS
+    libc.src.complex.cprojf
+  LINK_LIBRARIES
+    LibcFPTestHelpers
+)
+
+add_libc_test(
+  cprojl_tes...
[truncated]

libc/src/complex/generic/cproj.cpp

libc/src/__support/complex_type.h

Sh0g0-1758 added 4 commits December 12, 2024 22:15

implement cproj and add tests

ac1966c

clang fmt

2ff0a44

add special tests

481f8af

fmt

7cc53ea

llvmbot added the libc label Dec 12, 2024

Sh0g0-1758 requested a review from lntue December 12, 2024 17:04

Sh0g0-1758 self-assigned this Dec 12, 2024

Sh0g0-1758 requested review from SchrodingerZhu, overmighty and nickdesaulniers and removed request for overmighty December 12, 2024 17:15

lntue reviewed Dec 16, 2024

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libc/src/complex/generic/cproj.cpp Outdated Show resolved Hide resolved

Sh0g0-1758 added 3 commits December 17, 2024 15:19

templated cproj func

4409ad2

clang-fmt

248ee36

reduced some deps

648c338

lntue reviewed Dec 17, 2024

View reviewed changes

libc/src/__support/complex_type.h Outdated Show resolved Hide resolved

Sh0g0-1758 added 2 commits December 17, 2024 22:45

nit: refactor

f159f34

fmt

8845ef9

lntue approved these changes Dec 17, 2024

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Sh0g0-1758 merged commit c98e79d into llvm:main Dec 17, 2024
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[libc][complex] Implement different flavors of the `cproj` function #119722

[libc][complex] Implement different flavors of the `cproj` function #119722

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Sh0g0-1758 commented Dec 12, 2024

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llvmbot commented Dec 12, 2024

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[libc][complex] Implement different flavors of the cproj function #119722

[libc][complex] Implement different flavors of the cproj function #119722

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Sh0g0-1758 commented Dec 12, 2024

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llvmbot commented Dec 12, 2024

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[libc][complex] Implement different flavors of the `cproj` function #119722

[libc][complex] Implement different flavors of the `cproj` function #119722