/src/lib/numeric/real_80.e

 1-- This file is part of a Liberty Eiffel library.
 2-- See the full copyright at the end.
 3--
 4expanded class REAL_80
 5
 6insert
 7   REAL_GENERAL
 8
 9feature {ANY} -- Conversions:
10   force_to_real_32: REAL_32
11      external "built_in"
12      end
13
14   force_to_real_64: REAL_64
15      external "built_in"
16      end
17
18   force_to_integer_64: INTEGER_64
19      external "built_in"
20      end
21
22   force_to_integer_32: INTEGER_32
23      external "built_in"
24      end
25
26   force_to_integer_16: INTEGER_16
27      external "built_in"
28      end
29
30feature {ANY}
31   zero: REAL_80 0.0
32
33   one: REAL_80 1.0
34
35   infix "~=" (other: like Current): BOOLEAN
36      do
37         Result := (Current - other).abs * ({REAL_80 2.0} ^ (mantissa_bits - precision)) <= Current.abs
38      end
39
40   hash_code: INTEGER
41      do
42         Result := force_to_integer_32
43         if Result < 0 then
44            Result := -(Result + 1)
45         end
46      end
47
48   mantissa_bits: INTEGER_8 63
49         --|*** To be verified (Vincent Croizier, 10/02/05) ***
50
51   exponent_bits: INTEGER_8 15
52
53feature {}
54   sprintf (buffer: NATIVE_ARRAY[CHARACTER]; mode: CHARACTER; f: INTEGER; value: REAL_80)
55      external "plug_in"
56      alias "{
57         location: "${sys}/runtime"
58         module_name: "basic_sprintf"
59         feature_name: "sprintf_real_extended"
60         }"
61      end
62
63end -- class REAL_80
64--
65-- Copyright (C) 2009-2017: by all the people cited in the AUTHORS file.
66--
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71-- copies of the Software, and to permit persons to whom the Software is
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73--
74-- The above copyright notice and this permission notice shall be included in
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