| /*===-- __clang_cuda_complex_builtins - CUDA impls of runtime complex fns ---=== |
| * |
| * 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 __CLANG_CUDA_COMPLEX_BUILTINS |
| #define __CLANG_CUDA_COMPLEX_BUILTINS |
| |
| // This header defines __muldc3, __mulsc3, __divdc3, and __divsc3. These are |
| // libgcc functions that clang assumes are available when compiling c99 complex |
| // operations. (These implementations come from libc++, and have been modified |
| // to work with CUDA and OpenMP target offloading [in C and C++ mode].) |
| |
| #pragma push_macro("__DEVICE__") |
| #ifdef __OPENMP_NVPTX__ |
| #pragma omp declare target |
| #define __DEVICE__ __attribute__((noinline, nothrow, cold, weak)) |
| #else |
| #define __DEVICE__ __device__ inline |
| #endif |
| |
| // To make the algorithms available for C and C++ in CUDA and OpenMP we select |
| // different but equivalent function versions. TODO: For OpenMP we currently |
| // select the native builtins as the overload support for templates is lacking. |
| #if !defined(__OPENMP_NVPTX__) |
| #define _ISNANd std::isnan |
| #define _ISNANf std::isnan |
| #define _ISINFd std::isinf |
| #define _ISINFf std::isinf |
| #define _ISFINITEd std::isfinite |
| #define _ISFINITEf std::isfinite |
| #define _COPYSIGNd std::copysign |
| #define _COPYSIGNf std::copysign |
| #define _SCALBNd std::scalbn |
| #define _SCALBNf std::scalbn |
| #define _ABSd std::abs |
| #define _ABSf std::abs |
| #define _LOGBd std::logb |
| #define _LOGBf std::logb |
| // Rather than pulling in std::max from algorithm everytime, use available ::max. |
| #define _fmaxd max |
| #define _fmaxf max |
| #else |
| #ifdef __AMDGCN__ |
| #define _ISNANd __ocml_isnan_f64 |
| #define _ISNANf __ocml_isnan_f32 |
| #define _ISINFd __ocml_isinf_f64 |
| #define _ISINFf __ocml_isinf_f32 |
| #define _ISFINITEd __ocml_isfinite_f64 |
| #define _ISFINITEf __ocml_isfinite_f32 |
| #define _COPYSIGNd __ocml_copysign_f64 |
| #define _COPYSIGNf __ocml_copysign_f32 |
| #define _SCALBNd __ocml_scalbn_f64 |
| #define _SCALBNf __ocml_scalbn_f32 |
| #define _ABSd __ocml_fabs_f64 |
| #define _ABSf __ocml_fabs_f32 |
| #define _LOGBd __ocml_logb_f64 |
| #define _LOGBf __ocml_logb_f32 |
| #define _fmaxd __ocml_fmax_f64 |
| #define _fmaxf __ocml_fmax_f32 |
| #else |
| #define _ISNANd __nv_isnand |
| #define _ISNANf __nv_isnanf |
| #define _ISINFd __nv_isinfd |
| #define _ISINFf __nv_isinff |
| #define _ISFINITEd __nv_isfinited |
| #define _ISFINITEf __nv_finitef |
| #define _COPYSIGNd __nv_copysign |
| #define _COPYSIGNf __nv_copysignf |
| #define _SCALBNd __nv_scalbn |
| #define _SCALBNf __nv_scalbnf |
| #define _ABSd __nv_fabs |
| #define _ABSf __nv_fabsf |
| #define _LOGBd __nv_logb |
| #define _LOGBf __nv_logbf |
| #define _fmaxd __nv_fmax |
| #define _fmaxf __nv_fmaxf |
| #endif |
| #endif |
| |
| #if defined(__cplusplus) |
| extern "C" { |
| #endif |
| |
| __DEVICE__ double _Complex __muldc3(double __a, double __b, double __c, |
| double __d) { |
| double __ac = __a * __c; |
| double __bd = __b * __d; |
| double __ad = __a * __d; |
| double __bc = __b * __c; |
| double _Complex z; |
| __real__(z) = __ac - __bd; |
| __imag__(z) = __ad + __bc; |
| if (_ISNANd(__real__(z)) && _ISNANd(__imag__(z))) { |
| int __recalc = 0; |
| if (_ISINFd(__a) || _ISINFd(__b)) { |
| __a = _COPYSIGNd(_ISINFd(__a) ? 1 : 0, __a); |
| __b = _COPYSIGNd(_ISINFd(__b) ? 1 : 0, __b); |
| if (_ISNANd(__c)) |
| __c = _COPYSIGNd(0, __c); |
| if (_ISNANd(__d)) |
| __d = _COPYSIGNd(0, __d); |
| __recalc = 1; |
| } |
| if (_ISINFd(__c) || _ISINFd(__d)) { |
| __c = _COPYSIGNd(_ISINFd(__c) ? 1 : 0, __c); |
| __d = _COPYSIGNd(_ISINFd(__d) ? 1 : 0, __d); |
| if (_ISNANd(__a)) |
| __a = _COPYSIGNd(0, __a); |
| if (_ISNANd(__b)) |
| __b = _COPYSIGNd(0, __b); |
| __recalc = 1; |
| } |
| if (!__recalc && |
| (_ISINFd(__ac) || _ISINFd(__bd) || _ISINFd(__ad) || _ISINFd(__bc))) { |
| if (_ISNANd(__a)) |
| __a = _COPYSIGNd(0, __a); |
| if (_ISNANd(__b)) |
| __b = _COPYSIGNd(0, __b); |
| if (_ISNANd(__c)) |
| __c = _COPYSIGNd(0, __c); |
| if (_ISNANd(__d)) |
| __d = _COPYSIGNd(0, __d); |
| __recalc = 1; |
| } |
| if (__recalc) { |
| // Can't use std::numeric_limits<double>::infinity() -- that doesn't have |
| // a device overload (and isn't constexpr before C++11, naturally). |
| __real__(z) = __builtin_huge_val() * (__a * __c - __b * __d); |
| __imag__(z) = __builtin_huge_val() * (__a * __d + __b * __c); |
| } |
| } |
| return z; |
| } |
| |
| __DEVICE__ float _Complex __mulsc3(float __a, float __b, float __c, float __d) { |
| float __ac = __a * __c; |
| float __bd = __b * __d; |
| float __ad = __a * __d; |
| float __bc = __b * __c; |
| float _Complex z; |
| __real__(z) = __ac - __bd; |
| __imag__(z) = __ad + __bc; |
| if (_ISNANf(__real__(z)) && _ISNANf(__imag__(z))) { |
| int __recalc = 0; |
| if (_ISINFf(__a) || _ISINFf(__b)) { |
| __a = _COPYSIGNf(_ISINFf(__a) ? 1 : 0, __a); |
| __b = _COPYSIGNf(_ISINFf(__b) ? 1 : 0, __b); |
| if (_ISNANf(__c)) |
| __c = _COPYSIGNf(0, __c); |
| if (_ISNANf(__d)) |
| __d = _COPYSIGNf(0, __d); |
| __recalc = 1; |
| } |
| if (_ISINFf(__c) || _ISINFf(__d)) { |
| __c = _COPYSIGNf(_ISINFf(__c) ? 1 : 0, __c); |
| __d = _COPYSIGNf(_ISINFf(__d) ? 1 : 0, __d); |
| if (_ISNANf(__a)) |
| __a = _COPYSIGNf(0, __a); |
| if (_ISNANf(__b)) |
| __b = _COPYSIGNf(0, __b); |
| __recalc = 1; |
| } |
| if (!__recalc && |
| (_ISINFf(__ac) || _ISINFf(__bd) || _ISINFf(__ad) || _ISINFf(__bc))) { |
| if (_ISNANf(__a)) |
| __a = _COPYSIGNf(0, __a); |
| if (_ISNANf(__b)) |
| __b = _COPYSIGNf(0, __b); |
| if (_ISNANf(__c)) |
| __c = _COPYSIGNf(0, __c); |
| if (_ISNANf(__d)) |
| __d = _COPYSIGNf(0, __d); |
| __recalc = 1; |
| } |
| if (__recalc) { |
| __real__(z) = __builtin_huge_valf() * (__a * __c - __b * __d); |
| __imag__(z) = __builtin_huge_valf() * (__a * __d + __b * __c); |
| } |
| } |
| return z; |
| } |
| |
| __DEVICE__ double _Complex __divdc3(double __a, double __b, double __c, |
| double __d) { |
| int __ilogbw = 0; |
| // Can't use std::max, because that's defined in <algorithm>, and we don't |
| // want to pull that in for every compile. The CUDA headers define |
| // ::max(float, float) and ::max(double, double), which is sufficient for us. |
| double __logbw = _LOGBd(_fmaxd(_ABSd(__c), _ABSd(__d))); |
| if (_ISFINITEd(__logbw)) { |
| __ilogbw = (int)__logbw; |
| __c = _SCALBNd(__c, -__ilogbw); |
| __d = _SCALBNd(__d, -__ilogbw); |
| } |
| double __denom = __c * __c + __d * __d; |
| double _Complex z; |
| __real__(z) = _SCALBNd((__a * __c + __b * __d) / __denom, -__ilogbw); |
| __imag__(z) = _SCALBNd((__b * __c - __a * __d) / __denom, -__ilogbw); |
| if (_ISNANd(__real__(z)) && _ISNANd(__imag__(z))) { |
| if ((__denom == 0.0) && (!_ISNANd(__a) || !_ISNANd(__b))) { |
| __real__(z) = _COPYSIGNd(__builtin_huge_val(), __c) * __a; |
| __imag__(z) = _COPYSIGNd(__builtin_huge_val(), __c) * __b; |
| } else if ((_ISINFd(__a) || _ISINFd(__b)) && _ISFINITEd(__c) && |
| _ISFINITEd(__d)) { |
| __a = _COPYSIGNd(_ISINFd(__a) ? 1.0 : 0.0, __a); |
| __b = _COPYSIGNd(_ISINFd(__b) ? 1.0 : 0.0, __b); |
| __real__(z) = __builtin_huge_val() * (__a * __c + __b * __d); |
| __imag__(z) = __builtin_huge_val() * (__b * __c - __a * __d); |
| } else if (_ISINFd(__logbw) && __logbw > 0.0 && _ISFINITEd(__a) && |
| _ISFINITEd(__b)) { |
| __c = _COPYSIGNd(_ISINFd(__c) ? 1.0 : 0.0, __c); |
| __d = _COPYSIGNd(_ISINFd(__d) ? 1.0 : 0.0, __d); |
| __real__(z) = 0.0 * (__a * __c + __b * __d); |
| __imag__(z) = 0.0 * (__b * __c - __a * __d); |
| } |
| } |
| return z; |
| } |
| |
| __DEVICE__ float _Complex __divsc3(float __a, float __b, float __c, float __d) { |
| int __ilogbw = 0; |
| float __logbw = _LOGBf(_fmaxf(_ABSf(__c), _ABSf(__d))); |
| if (_ISFINITEf(__logbw)) { |
| __ilogbw = (int)__logbw; |
| __c = _SCALBNf(__c, -__ilogbw); |
| __d = _SCALBNf(__d, -__ilogbw); |
| } |
| float __denom = __c * __c + __d * __d; |
| float _Complex z; |
| __real__(z) = _SCALBNf((__a * __c + __b * __d) / __denom, -__ilogbw); |
| __imag__(z) = _SCALBNf((__b * __c - __a * __d) / __denom, -__ilogbw); |
| if (_ISNANf(__real__(z)) && _ISNANf(__imag__(z))) { |
| if ((__denom == 0) && (!_ISNANf(__a) || !_ISNANf(__b))) { |
| __real__(z) = _COPYSIGNf(__builtin_huge_valf(), __c) * __a; |
| __imag__(z) = _COPYSIGNf(__builtin_huge_valf(), __c) * __b; |
| } else if ((_ISINFf(__a) || _ISINFf(__b)) && _ISFINITEf(__c) && |
| _ISFINITEf(__d)) { |
| __a = _COPYSIGNf(_ISINFf(__a) ? 1 : 0, __a); |
| __b = _COPYSIGNf(_ISINFf(__b) ? 1 : 0, __b); |
| __real__(z) = __builtin_huge_valf() * (__a * __c + __b * __d); |
| __imag__(z) = __builtin_huge_valf() * (__b * __c - __a * __d); |
| } else if (_ISINFf(__logbw) && __logbw > 0 && _ISFINITEf(__a) && |
| _ISFINITEf(__b)) { |
| __c = _COPYSIGNf(_ISINFf(__c) ? 1 : 0, __c); |
| __d = _COPYSIGNf(_ISINFf(__d) ? 1 : 0, __d); |
| __real__(z) = 0 * (__a * __c + __b * __d); |
| __imag__(z) = 0 * (__b * __c - __a * __d); |
| } |
| } |
| return z; |
| } |
| |
| #if defined(__cplusplus) |
| } // extern "C" |
| #endif |
| |
| #undef _ISNANd |
| #undef _ISNANf |
| #undef _ISINFd |
| #undef _ISINFf |
| #undef _COPYSIGNd |
| #undef _COPYSIGNf |
| #undef _ISFINITEd |
| #undef _ISFINITEf |
| #undef _SCALBNd |
| #undef _SCALBNf |
| #undef _ABSd |
| #undef _ABSf |
| #undef _LOGBd |
| #undef _LOGBf |
| #undef _fmaxd |
| #undef _fmaxf |
| |
| #ifdef __OPENMP_NVPTX__ |
| #pragma omp end declare target |
| #endif |
| |
| #pragma pop_macro("__DEVICE__") |
| |
| #endif // __CLANG_CUDA_COMPLEX_BUILTINS |
