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5748ad84e5
Context: https://github.com/llvm/llvm-project/pull/87017 - Add proxy header `libc/hdr/math_macros.h` that will: - include `<math.h>` in overlay mode, - include `"include/llvm-libc-macros/math-macros.h"` in full build mode. - Its corresponding CMake target `libc.hdr.math_macros` will only depend on `libc.include.math` and `libc.include.llvm-libc-macros.math_macros` in full build mode. - Replace all `#include "include/llvm-libc-macros/math-macros.h"` with `#include "hdr/math_macros.h"`. - Add dependency to `libc.hdr.math_macros` CMake target when using `add_fp_unittest`. - Update the remaining dependency. - Update bazel overlay: add `libc:hdr_math_macros` target, and replacing all dependency on `libc:llvm_libc_macros_math_macros` with `libc:hdr_math_macros`.
84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
//===-- Definition of macros from math.h ----------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_MACROS_MATH_MACROS_H
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#define LLVM_LIBC_MACROS_MATH_MACROS_H
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#include "limits-macros.h"
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#define FP_NAN 0
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#define FP_INFINITE 1
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#define FP_ZERO 2
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#define FP_SUBNORMAL 3
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#define FP_NORMAL 4
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#define FP_INT_UPWARD 0
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#define FP_INT_DOWNWARD 1
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#define FP_INT_TOWARDZERO 2
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#define FP_INT_TONEARESTFROMZERO 3
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#define FP_INT_TONEAREST 4
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#define MATH_ERRNO 1
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#define MATH_ERREXCEPT 2
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#define HUGE_VAL __builtin_huge_val()
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#define INFINITY __builtin_inf()
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#define NAN __builtin_nanf("")
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#define FP_ILOGB0 (-INT_MAX - 1)
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#define FP_LLOGB0 (-LONG_MAX - 1)
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#ifdef __FP_LOGBNAN_MIN
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#define FP_ILOGBNAN (-INT_MAX - 1)
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#define FP_LLOGBNAN (-LONG_MAX - 1)
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#else
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#define FP_ILOGBNAN INT_MAX
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#define FP_LLOGBNAN LONG_MAX
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#endif
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#ifdef __FAST_MATH__
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#define math_errhandling 0
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#elif defined(__NO_MATH_ERRNO__)
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#define math_errhandling (MATH_ERREXCEPT)
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#elif defined(__NVPTX__) || defined(__AMDGPU__)
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#define math_errhandling (MATH_ERRNO)
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#else
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#define math_errhandling (MATH_ERRNO | MATH_ERREXCEPT)
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#endif
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// These must be type-generic functions. The C standard specifies them as
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// being macros rather than functions, in fact. However, in C++ it's important
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// that there be function declarations that don't interfere with other uses of
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// the identifier, even in places with parentheses where a function-like macro
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// will be expanded (such as a function declaration in a C++ namespace).
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// TODO: Move generic functional math macros to a separate header file.
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#ifdef __cplusplus
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template <typename T> inline constexpr bool isfinite(T x) {
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return __builtin_isfinite(x);
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}
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template <typename T> inline constexpr bool isinf(T x) {
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return __builtin_isinf(x);
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}
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template <typename T> inline constexpr bool isnan(T x) {
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return __builtin_isnan(x);
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}
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#else
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#define isfinite(x) __builtin_isfinite(x)
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#define isinf(x) __builtin_isinf(x)
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#define isnan(x) __builtin_isnan(x)
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#endif
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#endif // LLVM_LIBC_MACROS_MATH_MACROS_H
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