source: libcfa/src/rational.hfa@ d2fadeb

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since d2fadeb was fd54fef, checked in by Michael Brooks <mlbrooks@…>, 5 years ago

Converting the project to use the new syntax for otype, dtype and ttytpe.

Changed prelude (gen), libcfa and test suite to use it. Added a simple deprecation rule of the old syntax to the parser; we might wish to support both syntaxes "officially," like with an extra CLI switch, but this measure should serve as a simple reminder for our team to try the new syntax.
  • Property mode set to 100644
File size: 3.8 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2016 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// rational -- Rational numbers are numbers written as a ratio, i.e., as a fraction, where the numerator (top number)
8// and the denominator (bottom number) are whole numbers. When creating and computing with rational numbers, results
9// are constantly reduced to keep the numerator and denominator as small as possible.
10//
11// Author : Peter A. Buhr
12// Created On : Wed Apr 6 17:56:25 2016
13// Last Modified By : Peter A. Buhr
14// Last Modified On : Tue Mar 26 23:16:10 2019
15// Update Count : 109
16//
17
18#pragma once
19
20#include "iostream.hfa"
21
22trait scalar( T ) {
23};
24
25trait arithmetic( T | scalar( T ) ) {
26 int !?( T );
27 int ?==?( T, T );
28 int ?!=?( T, T );
29 int ?<?( T, T );
30 int ?<=?( T, T );
31 int ?>?( T, T );
32 int ?>=?( T, T );
33 void ?{}( T &, zero_t );
34 void ?{}( T &, one_t );
35 T +?( T );
36 T -?( T );
37 T ?+?( T, T );
38 T ?-?( T, T );
39 T ?*?( T, T );
40 T ?/?( T, T );
41 T ?%?( T, T );
42 T ?/=?( T &, T );
43 T abs( T );
44};
45
46// implementation
47
48forall( RationalImpl | arithmetic( RationalImpl ) ) {
49 struct Rational {
50 RationalImpl numerator, denominator; // invariant: denominator > 0
51 }; // Rational
52
53 // constructors
54
55 void ?{}( Rational(RationalImpl) & r );
56 void ?{}( Rational(RationalImpl) & r, RationalImpl n );
57 void ?{}( Rational(RationalImpl) & r, RationalImpl n, RationalImpl d );
58 void ?{}( Rational(RationalImpl) & r, zero_t );
59 void ?{}( Rational(RationalImpl) & r, one_t );
60
61 // numerator/denominator getter
62
63 RationalImpl numerator( Rational(RationalImpl) r );
64 RationalImpl denominator( Rational(RationalImpl) r );
65 [ RationalImpl, RationalImpl ] ?=?( & [ RationalImpl, RationalImpl ] dest, Rational(RationalImpl) src );
66
67 // numerator/denominator setter
68
69 RationalImpl numerator( Rational(RationalImpl) r, RationalImpl n );
70 RationalImpl denominator( Rational(RationalImpl) r, RationalImpl d );
71
72 // comparison
73
74 int ?==?( Rational(RationalImpl) l, Rational(RationalImpl) r );
75 int ?!=?( Rational(RationalImpl) l, Rational(RationalImpl) r );
76 int ?<?( Rational(RationalImpl) l, Rational(RationalImpl) r );
77 int ?<=?( Rational(RationalImpl) l, Rational(RationalImpl) r );
78 int ?>?( Rational(RationalImpl) l, Rational(RationalImpl) r );
79 int ?>=?( Rational(RationalImpl) l, Rational(RationalImpl) r );
80
81 // arithmetic
82
83 Rational(RationalImpl) +?( Rational(RationalImpl) r );
84 Rational(RationalImpl) -?( Rational(RationalImpl) r );
85 Rational(RationalImpl) ?+?( Rational(RationalImpl) l, Rational(RationalImpl) r );
86 Rational(RationalImpl) ?-?( Rational(RationalImpl) l, Rational(RationalImpl) r );
87 Rational(RationalImpl) ?*?( Rational(RationalImpl) l, Rational(RationalImpl) r );
88 Rational(RationalImpl) ?/?( Rational(RationalImpl) l, Rational(RationalImpl) r );
89
90 // I/O
91 forall( istype & | istream( istype ) | { istype & ?|?( istype &, RationalImpl & ); } )
92 istype & ?|?( istype &, Rational(RationalImpl) & );
93
94 forall( ostype & | ostream( ostype ) | { ostype & ?|?( ostype &, RationalImpl ); } ) {
95 ostype & ?|?( ostype &, Rational(RationalImpl) );
96 void ?|?( ostype &, Rational(RationalImpl) );
97 } // distribution
98} // distribution
99
100forall( RationalImpl | arithmetic( RationalImpl ) |{RationalImpl ?\?( RationalImpl, unsigned long );} )
101Rational(RationalImpl) ?\?( Rational(RationalImpl) x, long int y );
102
103// conversion
104forall( RationalImpl | arithmetic( RationalImpl ) | { double convert( RationalImpl ); } )
105double widen( Rational(RationalImpl) r );
106forall( RationalImpl | arithmetic( RationalImpl ) | { double convert( RationalImpl ); RationalImpl convert( double );} )
107Rational(RationalImpl) narrow( double f, RationalImpl md );
108
109// Local Variables: //
110// mode: c //
111// tab-width: 4 //
112// End: //
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