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/*===-- flang/runtime/complex-reduction.c ---------------------------*- 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 "complex-reduction.h"
#include <float.h>
struct CppComplexFloat {
float r, i;
};
struct CppComplexDouble {
double r, i;
};
struct CppComplexLongDouble {
long double r, i;
};
#if LDBL_MANT_DIG == 113 || HAS_FLOAT128
struct CppComplexFloat128 {
CFloat128Type r, i;
};
#endif
/* Not all environments define CMPLXF, CMPLX, CMPLXL. */
#ifndef CMPLXF
#if defined(__clang_major__) && (__clang_major__ >= 12)
#define CMPLXF __builtin_complex
#else
static float_Complex_t CMPLXF(float r, float i) {
union {
struct CppComplexFloat x;
float_Complex_t result;
} u;
u.x.r = r;
u.x.i = i;
return u.result;
}
#endif
#endif
#ifndef CMPLX
#if defined(__clang_major__) && (__clang_major__ >= 12)
#define CMPLX __builtin_complex
#else
static double_Complex_t CMPLX(double r, double i) {
union {
struct CppComplexDouble x;
double_Complex_t result;
} u;
u.x.r = r;
u.x.i = i;
return u.result;
}
#endif
#endif
#ifndef CMPLXL
#if defined(__clang_major__) && (__clang_major__ >= 12)
#define CMPLXL __builtin_complex
#else
static long_double_Complex_t CMPLXL(long double r, long double i) {
union {
struct CppComplexLongDouble x;
long_double_Complex_t result;
} u;
u.x.r = r;
u.x.i = i;
return u.result;
}
#endif
#endif
#if LDBL_MANT_DIG == 113 || HAS_FLOAT128
#ifndef CMPLXF128
/*
* GCC 7.4.0 (currently minimum GCC version for llvm builds)
* supports __builtin_complex. For Clang, require >=12.0.
* Otherwise, rely on the memory layout compatibility.
*/
#if (defined(__clang_major__) && (__clang_major__ >= 12)) || \
(defined(__GNUC__) && !defined(__clang__))
#define CMPLXF128 __builtin_complex
#else
static CFloat128ComplexType CMPLXF128(CFloat128Type r, CFloat128Type i) {
union {
struct CppComplexFloat128 x;
CFloat128ComplexType result;
} u;
u.x.r = r;
u.x.i = i;
return u.result;
}
#endif
#endif
#endif
/* RTNAME(SumComplex4) calls RTNAME(CppSumComplex4) with the same arguments
* and converts the members of its C++ complex result to C _Complex.
*/
#define CPP_NAME(name) Cpp##name
#define ADAPT_REDUCTION(name, cComplex, cpptype, cmplxMacro, ARGS, ARG_NAMES) \
struct cpptype RTNAME(CPP_NAME(name))(struct cpptype *, ARGS); \
cComplex RTNAME(name)(ARGS) { \
struct cpptype result; \
RTNAME(CPP_NAME(name))(&result, ARG_NAMES); \
return cmplxMacro(result.r, result.i); \
}
/* TODO: COMPLEX(2 & 3) */
/* SUM() */
ADAPT_REDUCTION(SumComplex4, float_Complex_t, CppComplexFloat, CMPLXF,
REDUCTION_ARGS, REDUCTION_ARG_NAMES)
ADAPT_REDUCTION(SumComplex8, double_Complex_t, CppComplexDouble, CMPLX,
REDUCTION_ARGS, REDUCTION_ARG_NAMES)
#if LDBL_MANT_DIG == 64
ADAPT_REDUCTION(SumComplex10, long_double_Complex_t, CppComplexLongDouble,
CMPLXL, REDUCTION_ARGS, REDUCTION_ARG_NAMES)
#endif
#if LDBL_MANT_DIG == 113 || HAS_FLOAT128
ADAPT_REDUCTION(SumComplex16, CFloat128ComplexType, CppComplexFloat128,
CMPLXF128, REDUCTION_ARGS, REDUCTION_ARG_NAMES)
#endif
/* PRODUCT() */
ADAPT_REDUCTION(ProductComplex4, float_Complex_t, CppComplexFloat, CMPLXF,
REDUCTION_ARGS, REDUCTION_ARG_NAMES)
ADAPT_REDUCTION(ProductComplex8, double_Complex_t, CppComplexDouble, CMPLX,
REDUCTION_ARGS, REDUCTION_ARG_NAMES)
#if LDBL_MANT_DIG == 64
ADAPT_REDUCTION(ProductComplex10, long_double_Complex_t, CppComplexLongDouble,
CMPLXL, REDUCTION_ARGS, REDUCTION_ARG_NAMES)
#endif
#if LDBL_MANT_DIG == 113 || HAS_FLOAT128
ADAPT_REDUCTION(ProductComplex16, CFloat128ComplexType, CppComplexFloat128,
CMPLXF128, REDUCTION_ARGS, REDUCTION_ARG_NAMES)
#endif
/* DOT_PRODUCT() */
ADAPT_REDUCTION(DotProductComplex4, float_Complex_t, CppComplexFloat, CMPLXF,
DOT_PRODUCT_ARGS, DOT_PRODUCT_ARG_NAMES)
ADAPT_REDUCTION(DotProductComplex8, double_Complex_t, CppComplexDouble, CMPLX,
DOT_PRODUCT_ARGS, DOT_PRODUCT_ARG_NAMES)
#if LDBL_MANT_DIG == 64
ADAPT_REDUCTION(DotProductComplex10, long_double_Complex_t,
CppComplexLongDouble, CMPLXL, DOT_PRODUCT_ARGS, DOT_PRODUCT_ARG_NAMES)
#endif
#if LDBL_MANT_DIG == 113 || HAS_FLOAT128
ADAPT_REDUCTION(DotProductComplex16, CFloat128ComplexType, CppComplexFloat128,
CMPLXF128, DOT_PRODUCT_ARGS, DOT_PRODUCT_ARG_NAMES)
#endif
/* REDUCE() */
#define RARGS REDUCE_ARGS(float_Complex_t, float_Complex_t_ref_op)
ADAPT_REDUCTION(ReduceComplex4Ref, float_Complex_t, CppComplexFloat, CMPLXF,
RARGS, REDUCE_ARG_NAMES)
#undef RARGS
#define RARGS REDUCE_ARGS(float_Complex_t, float_Complex_t_value_op)
ADAPT_REDUCTION(ReduceComplex4Value, float_Complex_t, CppComplexFloat, CMPLXF,
RARGS, REDUCE_ARG_NAMES)
#undef RARGS
#define RARGS REDUCE_ARGS(double_Complex_t, double_Complex_t_ref_op)
ADAPT_REDUCTION(ReduceComplex8Ref, double_Complex_t, CppComplexDouble, CMPLX,
RARGS, REDUCE_ARG_NAMES)
#undef RARGS
#define RARGS REDUCE_ARGS(double_Complex_t, double_Complex_t_value_op)
ADAPT_REDUCTION(ReduceComplex8Value, double_Complex_t, CppComplexDouble, CMPLX,
RARGS, REDUCE_ARG_NAMES)
#undef RARGS
#if LDBL_MANT_DIG == 64
#define RARGS REDUCE_ARGS(long_double_Complex_t, long_double_Complex_t_ref_op)
ADAPT_REDUCTION(ReduceComplex10Ref, long_double_Complex_t, CppComplexLongDouble,
CMPLXL, RARGS, REDUCE_ARG_NAMES)
#undef RARGS
#define RARGS REDUCE_ARGS(long_double_Complex_t, long_double_Complex_t_value_op)
ADAPT_REDUCTION(ReduceComplex10Value, long_double_Complex_t,
CppComplexLongDouble, CMPLXL, RARGS, REDUCE_ARG_NAMES)
#undef RARGS
#endif
#if LDBL_MANT_DIG == 113 || HAS_FLOAT128
#define RARGS REDUCE_ARGS(CFloat128ComplexType, CFloat128ComplexType_ref_op)
ADAPT_REDUCTION(ReduceComplex16Ref, CFloat128ComplexType, CppComplexFloat128,
CMPLXF128, RARGS, REDUCE_ARG_NAMES)
#undef RARGS
#define RARGS REDUCE_ARGS(CFloat128ComplexType, CFloat128ComplexType_value_op)
ADAPT_REDUCTION(ReduceComplex16Value, CFloat128ComplexType, CppComplexFloat128,
CMPLXF128, RARGS, REDUCE_ARG_NAMES)
#undef RARGS
#endif
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