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Diffstat (limited to 'gcc-4.9/gcc/ada/s-valdec.adb')
| -rw-r--r-- | gcc-4.9/gcc/ada/s-valdec.adb | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/ada/s-valdec.adb b/gcc-4.9/gcc/ada/s-valdec.adb new file mode 100644 index 000000000..ecd76821c --- /dev/null +++ b/gcc-4.9/gcc/ada/s-valdec.adb @@ -0,0 +1,68 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- S Y S T E M . V A L _ D E C -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1992-2013, 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. -- +-- -- +------------------------------------------------------------------------------ + +with System.Val_Real; use System.Val_Real; + +package body System.Val_Dec is + + ------------------ + -- Scan_Decimal -- + ------------------ + + -- For decimal types where Size < Integer'Size, it is fine to use + -- the floating-point circuit, since it certainly has sufficient + -- precision for any reasonable hardware, and we just don't support + -- things on junk hardware. + + function Scan_Decimal + (Str : String; + Ptr : not null access Integer; + Max : Integer; + Scale : Integer) return Integer + is + Val : Long_Long_Float; + begin + Val := Scan_Real (Str, Ptr, Max); + return Integer (Val * 10.0 ** Scale); + end Scan_Decimal; + + ------------------- + -- Value_Decimal -- + ------------------- + + -- Again, we use the real circuit for this purpose + + function Value_Decimal (Str : String; Scale : Integer) return Integer is + begin + return Integer (Value_Real (Str) * 10.0 ** Scale); + end Value_Decimal; + +end System.Val_Dec; |