| //===-- Extended-precision atan2 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/atan2l.h" |
| #include "src/__support/FPUtil/cast.h" |
| #include "src/__support/common.h" |
| #include "src/__support/macros/properties/types.h" |
| #include "src/__support/math/atan2.h" |
| #include "src/__support/math/atan2f128.h" |
| |
| namespace LIBC_NAMESPACE_DECL { |
| |
| LLVM_LIBC_FUNCTION(long double, atan2l, (long double y, long double x)) { |
| #if defined(LIBC_TYPES_LONG_DOUBLE_IS_FLOAT64) |
| return static_cast<long double>( |
| math::atan2(static_cast<double>(y), static_cast<double>(x))); |
| #elif defined(LIBC_TYPES_HAS_FLOAT128) |
| // TODO: Once we have a software implementation of float128, |
| // we can use it here unconditionally, even if float128 is not |
| // available as a host type. |
| return fputil::cast<long double>( |
| math::atan2f128(fputil::cast<float128>(y), fputil::cast<float128>(x))); |
| #else |
| #error "Extended precision is not yet supported" |
| #endif |
| } |
| |
| } // namespace LIBC_NAMESPACE_DECL |
