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

/* mpfr_set_str_binary -- set a floating-point number from a binary string | |

Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 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" | |

/* Currently the number should be of the form +/- xxxx.xxxxxxEyy, with | |

decimal exponent. The mantissa of x is supposed to be large enough | |

to hold all the bits of str. */ | |

void | |

mpfr_set_str_binary (mpfr_ptr x, const char *str) | |

{ | |

int has_sign; | |

int res; | |

if (*str == 'N') | |

{ | |

MPFR_SET_NAN(x); | |

__gmpfr_flags |= MPFR_FLAGS_NAN; | |

return; | |

} | |

has_sign = *str == '-' || *str == '+'; | |

if (str[has_sign] == 'I') | |

{ | |

MPFR_SET_INF(x); | |

if (*str == '-') | |

MPFR_SET_NEG(x); | |

else | |

MPFR_SET_POS(x); | |

return; | |

} | |

res = mpfr_strtofr (x, str, 0, 2, GMP_RNDZ); | |

MPFR_ASSERTN (res == 0); | |

} |