libc/hdr/math_macros.h

   1 //===-- Definition of macros from math.h ----------------------------------===//
   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
   9 #ifndef LLVM_LIBC_HDR_MATH_MACROS_H
  10 #define LLVM_LIBC_HDR_MATH_MACROS_H
  11
  12 #ifdef LIBC_FULL_BUILD
  13
  14 #include "include/llvm-libc-macros/math-macros.h"
  15
  16 #else // Overlay mode
  17
  18 // GCC will include CXX headers when __cplusplus is defined. This behavior
  19 // can be suppressed by defining _GLIBCXX_INCLUDE_NEXT_C_HEADERS.
  20 #if defined(__GNUC__) && !defined(__clang__)
  21 #define _GLIBCXX_INCLUDE_NEXT_C_HEADERS
  22 #endif
  23 #include <math.h>
  24
  25 // Some older math.h header does not have FP_INT_* constants yet.
  26 #ifndef FP_INT_UPWARD
  27 #define FP_INT_UPWARD 0
  28 #endif // FP_INT_UPWARD
  29
  30 #ifndef FP_INT_DOWNWARD
  31 #define FP_INT_DOWNWARD 1
  32 #endif // FP_INT_DOWNWARD
  33
  34 #ifndef FP_INT_TOWARDZERO
  35 #define FP_INT_TOWARDZERO 2
  36 #endif // FP_INT_TOWARDZERO
  37
  38 #ifndef FP_INT_TONEARESTFROMZERO
  39 #define FP_INT_TONEARESTFROMZERO 3
  40 #endif // FP_INT_TONEARESTFROMZERO
  41
  42 #ifndef FP_INT_TONEAREST
  43 #define FP_INT_TONEAREST 4
  44 #endif // FP_INT_TONEAREST
  45
  46 #endif // LLVM_LIBC_FULL_BUILD
  47
  48 #endif // LLVM_LIBC_HDR_MATH_MACROS_H