/usr/share/doc/libgmpada2/examples/demo.adb is in libgmpada3-dev 0.0.20110925-2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 | -- GMPAda, binding to the Ada Language for the GNU MultiPrecision library.
-- Copyright (C) 2007-2010 Nicolas Boulenguez <nicolas.boulenguez@free.fr>
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation, either version 3 of the License, or
-- (at your option) any later version.
--
-- This program 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 General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program. If not, see <http://www.gnu.org/licenses/>.
with Ada.Text_IO;
with GNU_Multiple_Precision; use GNU_Multiple_Precision;
with GNU_Multiple_Precision.Big_Integers; use GNU_Multiple_Precision.Big_Integers;
with GNU_Multiple_Precision.Big_Floats; use GNU_Multiple_Precision.Big_Floats;
with GNU_Multiple_Precision.Big_Rationals;
with GNU_Multiple_Precision.Text_IO;
with GNU_Multiple_Precision.Random_Numbers;
with Ada.Integer_Text_IO;
with Ada.Streams.Stream_IO;
with Ada.Float_Text_IO;
procedure Demo is
procedure Stream_IO_Random_Demo;
procedure Text_IO_Demo;
procedure Rationals_Demo;
procedure Float_Demo;
procedure Arithmetic_Demo;
procedure Mpfr_Demo;
package IIC is new Big_Integers.Integer_Conversions (Integer);
package RIC is new Big_Rationals.Integer_Conversions (Integer);
package RFC is new Big_Rationals.Float_Conversions (Float);
package FIC is new Big_Floats.Integer_Conversions (Integer);
package FFC is new Big_Floats.Float_Conversions (Float);
procedure Stream_IO_Random_Demo
is
-- Generates random numbers in -50 .. +50, outputs them, then
-- inputs and checks them.
use Random_Numbers, Ada.Streams.Stream_IO, IIC, FFC, RFC, Big_Rationals;
File : File_Type;
G : Generator;
Fifty : constant Big_Integer := To_Big_Integer (50);
Hundred_And_One : constant Big_Integer := To_Big_Integer (101);
Z : Big_Integer;
begin
Create (File, Out_File, "output");
Reset (G, 0);
for I in 1 .. 10 loop
Random (Z, G, Hundred_And_One);
Subtract (Z, Z, Fifty);
Big_Integer'Output (Stream (File), Z);
end loop;
Big_Rational'Write (Stream (File), To_Big_Rational (314159.0));
Big_Float'Write (Stream (File), To_Big_Float (0.000000314));
Close (File);
Open (File, In_File, "output");
Reset (G, 0);
for I in 1 .. 10 loop
Random (Z, G, Hundred_And_One);
pragma Assert (Big_Integer'Input (Stream (File)) + Fifty = Z);
end loop;
pragma Assert (Big_Rational'Input (Stream (File)) = To_Big_Rational (314159.0));
pragma Assert (Big_Float'Input (Stream (File)) = To_Big_Float (0.000000314));
Close (File);
pragma Unreferenced (File);
end Stream_IO_Random_Demo;
procedure Text_IO_Demo
is
use Ada.Text_IO, Ada.Integer_Text_IO, Text_IO, IIC, FFC, Ada.Float_Text_IO;
File : File_Type;
Buffer, Buffer2 : String (1 .. 20);
Last : Positive;
Z : Big_Integer;
F : Big_Float;
begin
Get ("0", Z, Last);
pragma Assert (Last = 1 and Image (Z) = " 0" and Z = Value (" 0"));
Get (" -23+z", Z, Last);
pragma Assert (Last = 4 and Image (Z) = "-23" and Z = Value (" -23 "));
Put (Buffer, -23);
Put (Buffer2, Z);
pragma Assert (Buffer = Buffer2);
Put (Buffer, -23, 16);
Put (Buffer2, Z, 16);
pragma Assert (Buffer = Buffer2);
Get (" +1_6#F_F#e2G", Z, Last);
pragma Assert (Last = 12 and Image (Z) = " 25500" and Z = Value (" 25500 "));
Get ("-10#2#E4z", F, Last);
pragma Assert (Last = 8 and Value (" -2.0E+4 ") = F);
Get ("-10#2.0#E4z", F, Last);
pragma Assert (Last = 10 and Value (" -2.0E+4 ") = F);
Put (Buffer, -10#2.0#E4, Aft => 0, Exp => 0);
Put (Buffer2, F, Aft => 0, Exp => 0);
pragma Assert (Buffer = Buffer2);
Put (Buffer, -10#2.0#E4, Aft => 8, Exp => 0);
Put (Buffer2, F, Aft => 8, Exp => 0);
pragma Assert (Buffer = Buffer2);
Get (".25s", F, Last);
pragma Assert (Last = 3 and Value (" 2.5E-1 ") = F);
Put (Buffer, F);
Put (Buffer2, 0.25);
pragma Assert (Buffer = Buffer2);
Get ("-2#011.1#E+3s", F, Last);
pragma Assert (Last = 12 and Value (" -28 ") = F);
Put (Buffer, F, Aft => 0, Exp => 3);
Put (Buffer2, -2#011.1#E+3, Aft => 0, Exp => 3);
pragma Assert (Buffer = Buffer2);
Open (File, Out_File, "output");
for I in -2 .. 2 loop
Set (Z, 10 * I);
pragma Assert (Integer'Image (10 * I) = Image (Z));
Put (Buffer, 10 * I);
Put (Buffer2, Z);
pragma Assert (Buffer = Buffer2);
Put (File, 10 * I, 10); Put (File, Z, 10); Put (File, ' '); Put (File, 10 * I);
New_Line (File);
Put (File, Z);
New_Line (File);
Set (F, Float (I) * 0.1);
Put (Buffer, Float (I) * 0.1, Aft => 6, Exp => 0);
Put (Buffer2, F, Aft => 6, Exp => 0);
pragma Assert (Buffer = Buffer2);
Put (Buffer, Float (I) * 0.1, Aft => 0);
Put (Buffer2, F, Aft => 0);
pragma Assert (Buffer = Buffer2);
Put (Buffer, Float (I) * 0.1, Aft => 6, Exp => 1);
Put (Buffer2, F, Aft => 6, Exp => 1);
pragma Assert (Buffer = Buffer2);
end loop;
Close (File);
Open (File, In_File, "output");
for I in -2 .. 2 loop
Get (File, Z, 10); pragma Assert (To_Num (Z) = 10 * I);
Get (File, Z, 10); pragma Assert (To_Num (Z) = 10 * I);
Get (File, Z); pragma Assert (To_Num (Z) = 10 * I);
Get (File, Z); pragma Assert (To_Num (Z) = 10 * I);
Skip_Line (File);
end loop;
Close (File);
pragma Unreferenced (File);
end Text_IO_Demo;
procedure Rationals_Demo
is
use Big_Rationals, RIC, Text_IO;
S : String (1 .. 8);
Q : Big_Rational;
begin
Set (Q, -1, 2);
pragma Assert (Image (Q) = "-1/2");
Put (S, Q); pragma Assert (S = " -1/2");
Put (S, Q, 2); pragma Assert (S = "-2#1/10#");
Set (Q, 1, 2);
pragma Assert (Image (Q) = " 1/2");
Put (S, Q); pragma Assert (S = " 1/2");
Put (S, Q, 16); pragma Assert (S = " 16#1/2#");
Invert (Q, Q);
pragma Assert (Image (Q) = " 2");
Put (S, Q); pragma Assert (S = " 2");
Put (S, Q, 16); pragma Assert (S = " 16#2#");
Exponentiate (Q, Q, -3);
pragma Assert (Image (Q) = " 1/8");
Put (S, Q); pragma Assert (S = " 1/8");
Put (S, Q, 4); pragma Assert (S = " 4#1/20#");
Set (Q, 0, 2);
pragma Assert (Image (Q) = " 0");
end Rationals_Demo;
procedure Float_Demo
is
use Big_Rationals, FFC, FIC;
F : Big_Float;
begin
Set (F, 2.0);
pragma Assert (To_Num (F) = 2.0);
pragma Assert (F /= To_Big_Float (1));
pragma Assert (F = To_Big_Float (2));
-- Check if (predefined) inequality is correctly handled.
end Float_Demo;
procedure Arithmetic_Demo is
use IIC;
A, B, C : Big_Integer;
begin
Factorial (A, 5);
Set (B, 120);
Set (C, 1);
Subtract_A_Product (A, B, C);
pragma Assert (Is_Even (A) and Image (A) = " 0");
end Arithmetic_Demo;
procedure Mpfr_Demo is
F : Big_Float_Rounded;
begin
pragma Unreferenced (F);
-- We just test that init and clear are well linked for now.
null;
end Mpfr_Demo;
use Ada.Text_IO;
begin
Put ("Testing Stream_IO_Random_Demo... "); Stream_IO_Random_Demo; Put_Line ("done.");
Put ("Testing Text_IO_Demo... "); Text_IO_Demo; Put_Line ("done.");
Put ("Testing Rationals_Demo... "); Rationals_Demo; Put_Line ("done.");
Put ("Testing Float_Demo... "); Float_Demo; Put_Line ("done.");
Put ("Testing Arithmetic_Demo... "); Arithmetic_Demo; Put_Line ("done.");
Put ("Testing MPFR_Demo... "); Mpfr_Demo; Put_Line ("done.");
end Demo;
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