------------------------------------------------------------------------------ | |

-- -- | |

-- GNAT RUN-TIME COMPONENTS -- | |

-- -- | |

-- S Y S T E M . I M G _ R E A L -- | |

-- -- | |

-- S p e c -- | |

-- -- | |

-- Copyright (C) 1992-2009, Free Software Foundation, Inc. -- | |

-- -- | |

-- GNAT is free software; you can redistribute it and/or modify it under -- | |

-- terms of the GNU General Public License as published by the Free Soft- -- | |

-- ware Foundation; either version 3, or (at your option) any later ver- -- | |

-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |

-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |

-- or FITNESS FOR A PARTICULAR PURPOSE. -- | |

-- -- | |

-- As a special exception under Section 7 of GPL version 3, you are granted -- | |

-- additional permissions described in the GCC Runtime Library Exception, -- | |

-- version 3.1, as published by the Free Software Foundation. -- | |

-- -- | |

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

-- a copy of the GCC Runtime Library Exception along with this program; -- | |

-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |

-- <http://www.gnu.org/licenses/>. -- | |

-- -- | |

-- GNAT was originally developed by the GNAT team at New York University. -- | |

-- Extensive contributions were provided by Ada Core Technologies Inc. -- | |

-- -- | |

------------------------------------------------------------------------------ | |

-- Image for fixed and float types (also used for Float_IO/Fixed_IO output) | |

package System.Img_Real is | |

pragma Pure; | |

procedure Image_Ordinary_Fixed_Point | |

(V : Long_Long_Float; | |

S : in out String; | |

P : out Natural; | |

Aft : Natural); | |

-- Computes fixed_type'Image (V) and returns the result in S (1 .. P) | |

-- updating P on return. The result is computed according to the rules for | |

-- image for fixed-point types (RM 3.5(34)), where Aft is the value of the | |

-- Aft attribute for the fixed-point type. This function is used only for | |

-- ordinary fixed point (see package System.Img_Dec for handling of decimal | |

-- fixed-point). The caller guarantees that S is long enough to hold the | |

-- result and has a lower bound of 1. | |

procedure Image_Floating_Point | |

(V : Long_Long_Float; | |

S : in out String; | |

P : out Natural; | |

Digs : Natural); | |

-- Computes fixed_type'Image (V) and returns the result in S (1 .. P) | |

-- updating P on return. The result is computed according to the rules for | |

-- image for floating-point types (RM 3.5(33)), where Digs is the value of | |

-- the Digits attribute for the floating-point type. The caller guarantees | |

-- that S is long enough to hold the result and has a lower bound of 1. | |

procedure Set_Image_Real | |

(V : Long_Long_Float; | |

S : out String; | |

P : in out Natural; | |

Fore : Natural; | |

Aft : Natural; | |

Exp : Natural); | |

-- Sets the image of V starting at S (P + 1), updating P to point to the | |

-- last character stored, the caller promises that the buffer is large | |

-- enough and no check is made for this. Constraint_Error will not | |

-- necessarily be raised if this is violated, since it is perfectly valid | |

-- to compile this unit with checks off). The Fore, Aft and Exp values | |

-- can be set to any valid values for the case of use from Text_IO. Note | |

-- that no space is stored at the start for non-negative values. | |

end System.Img_Real; |