| //===-- Floating point environment manipulation functions -------*- 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIBC_SRC___SUPPORT_FPUTIL_FENVIMPL_H |
| #define LLVM_LIBC_SRC___SUPPORT_FPUTIL_FENVIMPL_H |
| |
| #include "hdr/fenv_macros.h" |
| #include "hdr/math_macros.h" |
| #include "hdr/types/fenv_t.h" |
| #include "src/__support/macros/attributes.h" // LIBC_INLINE |
| #include "src/__support/macros/properties/architectures.h" |
| #include "src/errno/libc_errno.h" |
| |
| #if defined(LIBC_TARGET_ARCH_IS_AARCH64) |
| #if defined(__APPLE__) |
| #include "aarch64/fenv_darwin_impl.h" |
| #else |
| #include "aarch64/FEnvImpl.h" |
| #endif |
| |
| // The extra !defined(APPLE) condition is to cause x86_64 MacOS builds to use |
| // the dummy implementations below. Once a proper x86_64 darwin fenv is set up, |
| // the apple condition here should be removed. |
| #elif defined(LIBC_TARGET_ARCH_IS_X86) && !defined(__APPLE__) |
| #include "x86_64/FEnvImpl.h" |
| #elif defined(LIBC_TARGET_ARCH_IS_ARM) && defined(__ARM_FP) |
| #include "arm/FEnvImpl.h" |
| #elif defined(LIBC_TARGET_ARCH_IS_ANY_RISCV) |
| #include "riscv/FEnvImpl.h" |
| #else |
| |
| namespace LIBC_NAMESPACE::fputil { |
| |
| // All dummy functions silently succeed. |
| |
| LIBC_INLINE int clear_except(int) { return 0; } |
| |
| LIBC_INLINE int test_except(int) { return 0; } |
| |
| LIBC_INLINE int get_except() { return 0; } |
| |
| LIBC_INLINE int set_except(int) { return 0; } |
| |
| LIBC_INLINE int raise_except(int) { return 0; } |
| |
| LIBC_INLINE int enable_except(int) { return 0; } |
| |
| LIBC_INLINE int disable_except(int) { return 0; } |
| |
| LIBC_INLINE int get_round() { return FE_TONEAREST; } |
| |
| LIBC_INLINE int set_round(int rounding_mode) { |
| return (rounding_mode == FE_TONEAREST) ? 0 : 1; |
| } |
| |
| LIBC_INLINE int get_env(fenv_t *) { return 0; } |
| |
| LIBC_INLINE int set_env(const fenv_t *) { return 0; } |
| |
| } // namespace LIBC_NAMESPACE::fputil |
| #endif |
| |
| namespace LIBC_NAMESPACE::fputil { |
| |
| LIBC_INLINE int set_except_if_required(int excepts) { |
| if (math_errhandling & MATH_ERREXCEPT) |
| return set_except(excepts); |
| return 0; |
| } |
| |
| LIBC_INLINE int raise_except_if_required(int excepts) { |
| if (math_errhandling & MATH_ERREXCEPT) |
| return raise_except(excepts); |
| return 0; |
| } |
| |
| LIBC_INLINE void set_errno_if_required(int err) { |
| if (math_errhandling & MATH_ERRNO) |
| libc_errno = err; |
| } |
| |
| } // namespace LIBC_NAMESPACE::fputil |
| |
| #endif // LLVM_LIBC_SRC___SUPPORT_FPUTIL_FENVIMPL_H |