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

| -- -- |

| -- GNAT RUN-TIME COMPONENTS -- |

| -- -- |

| -- S Y S T E M . F O R E _ F -- |

| -- -- |

| -- S p e c -- |

| -- -- |

| -- Copyright (C) 2020-2021, 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. -- |

| -- -- |

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

| |

| -- This package contains the routine used for the Fore attribute of ordinary |

| -- fixed point types whose Small is the ratio of two Int values. |

| |

| generic |

| |

| type Int is range <>; |

| |

| with procedure Scaled_Divide |

| (X, Y, Z : Int; |

| Q, R : out Int; |

| Round : Boolean); |

| |

| package System.Fore_F is |

| pragma Pure; |

| |

| function Fore_Fixed |

| (Lo, Hi, Num, Den : Int; Scale : Integer) return Natural; |

| -- Compute Fore attribute value for an ordinary fixed point type. The |

| -- parameters are the low and high bounds (in units of small), the small |

| -- Num/Den and the associated scale, which is the smallest integer N such |

| -- that 10**N * (Num/Den) is greater or equal to 1, if it is nonpositive. |

| |

| end System.Fore_F; |