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[libc][complex] Implement different flavors of the cproj function (#119722)
Refer section 7.3.9.5 of ISO/IEC 9899:2023
1 parent e8ce6c4 commit c98e79d

34 files changed

+619
-13
lines changed

‎libc/config/linux/aarch64/entrypoints.txt

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@@ -370,6 +370,9 @@ set(TARGET_LIBM_ENTRYPOINTS
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libc.src.complex.conj
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libc.src.complex.conjf
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libc.src.complex.conjl
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libc.src.complex.cproj
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libc.src.complex.cprojf
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libc.src.complex.cprojl
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# fenv.h entrypoints
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libc.src.fenv.feclearexcept
@@ -622,6 +625,7 @@ if(LIBC_TYPES_HAS_FLOAT16)
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# libc.src.complex.crealf16
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# libc.src.complex.cimagf16
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# libc.src.complex.conjf16
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# libc.src.complex.cprojf16
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# math.h C23 _Float16 entrypoints
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libc.src.math.canonicalizef16
@@ -728,6 +732,7 @@ if(LIBC_TYPES_HAS_FLOAT128)
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libc.src.complex.crealf128
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libc.src.complex.cimagf128
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libc.src.complex.conjf128
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libc.src.complex.cprojf128
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# math.h C23 _Float128 entrypoints
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libc.src.math.canonicalizef128

‎libc/config/linux/arm/entrypoints.txt

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@@ -212,6 +212,9 @@ set(TARGET_LIBM_ENTRYPOINTS
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libc.src.complex.conj
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libc.src.complex.conjf
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libc.src.complex.conjl
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libc.src.complex.cproj
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libc.src.complex.cprojf
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libc.src.complex.cprojl
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# fenv.h entrypoints
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libc.src.fenv.feclearexcept

‎libc/config/linux/riscv/entrypoints.txt

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@@ -367,6 +367,9 @@ set(TARGET_LIBM_ENTRYPOINTS
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libc.src.complex.conj
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libc.src.complex.conjf
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libc.src.complex.conjl
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libc.src.complex.cproj
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libc.src.complex.cprojf
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libc.src.complex.cprojl
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# fenv.h entrypoints
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libc.src.fenv.feclearexcept
@@ -623,6 +626,7 @@ if(LIBC_TYPES_HAS_FLOAT128)
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libc.src.complex.crealf128
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libc.src.complex.cimagf128
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libc.src.complex.conjf128
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libc.src.complex.cprojf128
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# math.h C23 _Float128 entrypoints
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libc.src.math.canonicalizef128

‎libc/config/linux/x86_64/entrypoints.txt

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@@ -370,6 +370,9 @@ set(TARGET_LIBM_ENTRYPOINTS
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libc.src.complex.conj
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libc.src.complex.conjf
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libc.src.complex.conjl
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libc.src.complex.cproj
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libc.src.complex.cprojf
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libc.src.complex.cprojl
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# fenv.h entrypoints
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libc.src.fenv.feclearexcept
@@ -627,6 +630,7 @@ if(LIBC_TYPES_HAS_FLOAT16)
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libc.src.complex.crealf16
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libc.src.complex.cimagf16
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libc.src.complex.conjf16
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libc.src.complex.cprojf16
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# math.h C23 _Float16 entrypoints
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libc.src.math.canonicalizef16
@@ -738,6 +742,7 @@ if(LIBC_TYPES_HAS_FLOAT128)
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# libc.src.complex.crealf128
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# libc.src.complex.cimagf128
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# libc.src.complex.conjf128
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# libc.src.complex.cprojf128
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# math.h C23 _Float128 entrypoints
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libc.src.math.canonicalizef128

‎libc/docs/headers/complex.rst

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@@ -59,7 +59,7 @@ Functions
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+-----------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
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| conj | |check| | |check| | |check| | |check| | |check| | 7.3.9.4 | N/A |
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+-----------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
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| cproj | | | | | | 7.3.9.5 | N/A |
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| cproj | |check| | |check| | |check| | |check| | |check| | 7.3.9.5 | N/A |
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+-----------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+
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| creal | |check| | |check| | |check| | |check| | |check| | 7.3.9.6 | N/A |
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+-----------+------------------+-----------------+------------------------+----------------------+------------------------+------------------------+----------------------------+

‎libc/hdrgen/yaml/complex.yaml

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@@ -103,3 +103,35 @@ functions:
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arguments:
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- type: cfloat128
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guard: LIBC_TYPES_HAS_CFLOAT128
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- name: cproj
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standards:
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- stdc
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return_type: _Complex double
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arguments:
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- type: _Complex double
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- name: cprojf
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standards:
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- stdc
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return_type: _Complex float
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arguments:
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- type: _Complex float
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- name: cprojl
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standards:
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- stdc
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return_type: _Complex long double
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arguments:
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- type: _Complex long double
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- name: cprojf16
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standards:
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- stdc
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return_type: cfloat16
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arguments:
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- type: cfloat16
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guard: LIBC_TYPES_HAS_CFLOAT16
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- name: cprojf128
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standards:
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- stdc
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return_type: cfloat128
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arguments:
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- type: cfloat128
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guard: LIBC_TYPES_HAS_CFLOAT128

‎libc/src/__support/CMakeLists.txt

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@@ -241,6 +241,11 @@ add_header_library(
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complex_type
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HDRS
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complex_type.h
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DEPENDS
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libc.src.__support.CPP.bit
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libc.src.__support.FPUtil.fp_bits
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libc.src.__support.macros.properties.types
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libc.src.__support.macros.properties.complex_types
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)
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add_header_library(

‎libc/src/__support/complex_type.h

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@@ -9,6 +9,8 @@
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#ifndef LLVM_LIBC_SRC___SUPPORT_COMPLEX_TYPE_H
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#define LLVM_LIBC_SRC___SUPPORT_COMPLEX_TYPE_H
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#include "src/__support/CPP/bit.h"
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#include "src/__support/FPUtil/FPBits.h"
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#include "src/__support/macros/config.h"
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#include "src/__support/macros/properties/complex_types.h"
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#include "src/__support/macros/properties/types.h"
@@ -75,5 +77,18 @@ template <typename T> LIBC_INLINE constexpr T conjugate(T c) {
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return cpp::bit_cast<T>(c_c);
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}
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template <typename T> LIBC_INLINE constexpr T project(T c) {
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using real_t = make_real_t<T>;
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Complex<real_t> c_c = cpp::bit_cast<Complex<real_t>>(c);
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if (fputil::FPBits<real_t>(c_c.real).is_inf() ||
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fputil::FPBits<real_t>(c_c.imag).is_inf()) {
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return cpp::bit_cast<T>(
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Complex<real_t>{(fputil::FPBits<real_t>::inf(Sign::POS).get_val()),
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static_cast<real_t>(c_c.imag > 0 ? 0.0 : -0.0)});
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} else {
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return c;
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}
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}
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} // namespace LIBC_NAMESPACE_DECL
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#endif // LLVM_LIBC_SRC___SUPPORT_COMPLEX_TYPE_H

‎libc/src/complex/CMakeLists.txt

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@@ -30,3 +30,9 @@ add_complex_entrypoint_object(conjf)
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add_complex_entrypoint_object(conjl)
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add_complex_entrypoint_object(conjf16)
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add_complex_entrypoint_object(conjf128)
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add_complex_entrypoint_object(cproj)
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add_complex_entrypoint_object(cprojf)
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add_complex_entrypoint_object(cprojl)
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add_complex_entrypoint_object(cprojf16)
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add_complex_entrypoint_object(cprojf128)

‎libc/src/complex/conjf128.h

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@@ -7,7 +7,6 @@
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//===----------------------------------------------------------------------===//
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#include "src/__support/macros/properties/complex_types.h"
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#include "src/__support/macros/properties/types.h"
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#if defined(LIBC_TYPES_HAS_CFLOAT128)
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