chromium / native_client / nacl-gcc / f80d6b9ee7f94755c697ffb7194fb01dd0c537dd / . / mpfr-2.4.1 / dim.c

/* mpfr_dim -- positive difference | |

Copyright 2001, 2002, 2004, 2006, 2007, 2008, 2009 Free Software Foundation, Inc. | |

Contributed by the Arenaire and Cacao projects, INRIA. | |

This file is part of the GNU MPFR Library. | |

The GNU MPFR Library is free software; you can redistribute it and/or modify | |

it under the terms of the GNU Lesser General Public License as published by | |

the Free Software Foundation; either version 2.1 of the License, or (at your | |

option) any later version. | |

The GNU MPFR Library is distributed in the hope that it will be useful, but | |

WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |

or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public | |

License for more details. | |

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

along with the GNU MPFR Library; see the file COPYING.LIB. If not, write to | |

the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |

MA 02110-1301, USA. */ | |

#include "mpfr-impl.h" | |

/* dim (x,y) is defined as: | |

x-y if x > y | |

+0 if x <= y | |

*/ | |

int | |

mpfr_dim (mpfr_ptr z, mpfr_srcptr x, mpfr_srcptr y, mp_rnd_t rnd_mode) | |

{ | |

if (MPFR_IS_NAN(x) || MPFR_IS_NAN(y)) | |

{ | |

MPFR_SET_NAN(z); | |

MPFR_RET_NAN; | |

} | |

if (mpfr_cmp (x,y) > 0) | |

return mpfr_sub (z, x, y, rnd_mode); | |

else | |

{ | |

MPFR_SET_ZERO(z); | |

MPFR_SET_POS(z); | |

MPFR_RET(0); | |

} | |

} |