1 | /* Copyright (C) 2001-2016 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |

3 | |

4 | The GNU C Library is free software; you can redistribute it and/or |

5 | modify it under the terms of the GNU Lesser General Public |

6 | License as published by the Free Software Foundation; either |

7 | version 2.1 of the License, or (at your option) any later version. |

8 | |

9 | The GNU C Library is distributed in the hope that it will be useful, |

10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |

11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |

12 | Lesser General Public License for more details. |

13 | |

14 | You should have received a copy of the GNU Lesser General Public |

15 | License along with the GNU C Library; if not, see |

16 | <http://www.gnu.org/licenses/>. */ |

17 | |

18 | #if !defined _MATH_H && !defined _COMPLEX_H |

19 | # error "Never use <bits/mathdef.h> directly; include <math.h> instead" |

20 | #endif |

21 | |

22 | #if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF |

23 | # define _MATH_H_MATHDEF 1 |

24 | |

25 | # if defined __x86_64__ || (defined __FLT_EVAL_METHOD__ && __FLT_EVAL_METHOD__ == 0) |

26 | /* The x86-64 architecture computes values with the precission of the |

27 | used type. Similarly for -m32 -mfpmath=sse. */ |

28 | typedef float float_t; /* `float' expressions are evaluated as `float'. */ |

29 | typedef double double_t; /* `double' expressions are evaluated |

30 | as `double'. */ |

31 | # else |

32 | /* The ix87 FPUs evaluate all values in the 80 bit floating-point format |

33 | which is also available for the user as `long double'. Therefore we |

34 | define: */ |

35 | typedef long double float_t; /* `float' expressions are evaluated as |

36 | `long double'. */ |

37 | typedef long double double_t; /* `double' expressions are evaluated as |

38 | `long double'. */ |

39 | # endif |

40 | |

41 | /* The values returned by `ilogb' for 0 and NaN respectively. */ |

42 | # define FP_ILOGB0 (-2147483647 - 1) |

43 | # define FP_ILOGBNAN (-2147483647 - 1) |

44 | |

45 | /* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l} |

46 | builtins are supported. */ |

47 | # ifdef __FP_FAST_FMA |

48 | # define FP_FAST_FMA 1 |

49 | # endif |

50 | |

51 | # ifdef __FP_FAST_FMAF |

52 | # define FP_FAST_FMAF 1 |

53 | # endif |

54 | |

55 | # ifdef __FP_FAST_FMAL |

56 | # define FP_FAST_FMAL 1 |

57 | # endif |

58 | |

59 | #endif /* ISO C99 */ |

60 |