roots.h 1.8 KB

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  1. //===----------------------------------------------------------------------===//
  2. //
  3. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  4. // See https://llvm.org/LICENSE.txt for license information.
  5. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  6. //
  7. //===----------------------------------------------------------------------===//
  8. #ifndef _LIBCPP___MATH_ROOTS_H
  9. #define _LIBCPP___MATH_ROOTS_H
  10. #include <__config>
  11. #include <__type_traits/enable_if.h>
  12. #include <__type_traits/is_integral.h>
  13. #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  14. # pragma GCC system_header
  15. #endif
  16. _LIBCPP_BEGIN_NAMESPACE_STD
  17. namespace __math {
  18. // sqrt
  19. inline _LIBCPP_HIDE_FROM_ABI float sqrt(float __x) _NOEXCEPT { return __builtin_sqrtf(__x); }
  20. template <class = int>
  21. _LIBCPP_HIDE_FROM_ABI double sqrt(double __x) _NOEXCEPT {
  22. return __builtin_sqrt(__x);
  23. }
  24. inline _LIBCPP_HIDE_FROM_ABI long double sqrt(long double __x) _NOEXCEPT { return __builtin_sqrtl(__x); }
  25. template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
  26. inline _LIBCPP_HIDE_FROM_ABI double sqrt(_A1 __x) _NOEXCEPT {
  27. return __builtin_sqrt((double)__x);
  28. }
  29. // cbrt
  30. _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI float cbrt(float __x) _NOEXCEPT { return __builtin_cbrtf(__x); }
  31. template <class = int>
  32. _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI double cbrt(double __x) _NOEXCEPT {
  33. return __builtin_cbrt(__x);
  34. }
  35. _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI long double cbrt(long double __x) _NOEXCEPT {
  36. return __builtin_cbrtl(__x);
  37. }
  38. template <class _A1, __enable_if_t<is_integral<_A1>::value, int> = 0>
  39. _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI double cbrt(_A1 __x) _NOEXCEPT {
  40. return __builtin_cbrt((double)__x);
  41. }
  42. } // namespace __math
  43. _LIBCPP_END_NAMESPACE_STD
  44. #endif // _LIBCPP___MATH_ROOTS_H