public inbox for gcc-cvs@sourceware.org
help / color / mirror / Atom feed
* [gcc r12-1579] [Ada] Provide new function Uintp.UI_To_Unsigned_64
@ 2021-06-17 14:33 Pierre-Marie de Rodat
0 siblings, 0 replies; only message in thread
From: Pierre-Marie de Rodat @ 2021-06-17 14:33 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:2be63603c6aa1567b4816945c97366500e03792b
commit r12-1579-g2be63603c6aa1567b4816945c97366500e03792b
Author: Arnaud Charlet <charlet@adacore.com>
Date: Mon Mar 8 07:13:43 2021 -0500
[Ada] Provide new function Uintp.UI_To_Unsigned_64
gcc/ada/
* uintp.ads, uintp.adb (UI_To_Unsigned_64): New.
Diff:
---
gcc/ada/uintp.adb | 44 ++++++++++++++++++++++++++++++++++++++++++--
gcc/ada/uintp.ads | 5 +++++
2 files changed, 47 insertions(+), 2 deletions(-)
diff --git a/gcc/ada/uintp.adb b/gcc/ada/uintp.adb
index 045b8e53d88..8183469ca9b 100644
--- a/gcc/ada/uintp.adb
+++ b/gcc/ada/uintp.adb
@@ -2179,9 +2179,9 @@ package body Uintp is
end if;
end UI_To_CC;
- ----------------
+ ---------------
-- UI_To_Int --
- ----------------
+ ---------------
function UI_To_Int (Input : Uint) return Int is
pragma Assert (Input /= No_Uint);
@@ -2230,6 +2230,46 @@ package body Uintp is
end if;
end UI_To_Int;
+ -----------------
+ -- UI_To_Uns64 --
+ -----------------
+
+ function UI_To_Unsigned_64 (Input : Uint) return Unsigned_64 is
+ pragma Assert (Input /= No_Uint);
+
+ begin
+ if Input < Uint_0 then
+ raise Constraint_Error;
+ end if;
+
+ if Direct (Input) then
+ return Unsigned_64 (Direct_Val (Input));
+
+ -- Case of input is more than one digit
+
+ else
+ if Input >= Uint_2**Int'(64) then
+ raise Constraint_Error;
+ end if;
+
+ declare
+ In_Length : constant Int := N_Digits (Input);
+ In_Vec : UI_Vector (1 .. In_Length);
+ Ret_Int : Unsigned_64 := 0;
+
+ begin
+ Init_Operand (Input, In_Vec);
+
+ for Idx in In_Vec'Range loop
+ Ret_Int :=
+ Ret_Int * Unsigned_64 (Base) + Unsigned_64 (In_Vec (Idx));
+ end loop;
+
+ return Ret_Int;
+ end;
+ end if;
+ end UI_To_Unsigned_64;
+
--------------
-- UI_Write --
--------------
diff --git a/gcc/ada/uintp.ads b/gcc/ada/uintp.ads
index 04657027fd9..607e7ef95fa 100644
--- a/gcc/ada/uintp.ads
+++ b/gcc/ada/uintp.ads
@@ -252,6 +252,11 @@ package Uintp is
-- Converts universal integer value to Int. Constraint_Error if value is
-- not in appropriate range.
+ type Unsigned_64 is mod 2**64;
+ function UI_To_Unsigned_64 (Input : Uint) return Unsigned_64;
+ -- Converts universal integer value to Unsigned_64. Constraint_Error if
+ -- value is not in appropriate range.
+
function UI_To_CC (Input : Uint) return Char_Code;
-- Converts universal integer value to Char_Code. Constraint_Error if value
-- is not in Char_Code range.
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2021-06-17 14:33 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-06-17 14:33 [gcc r12-1579] [Ada] Provide new function Uintp.UI_To_Unsigned_64 Pierre-Marie de Rodat
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).