source: src/examples/sum.c @ 784deab

aaron-thesisarm-ehcleanup-dtorsctordeferred_resndemanglerenumforall-pointer-decaygc_noraiijacob/cs343-translationjenkins-sandboxmemorynew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationresolv-newstringwith_gc
Last change on this file since 784deab was 784deab, checked in by Peter A. Buhr <pabuhr@…>, 7 years ago

fix recursive include bug in shadow includes, major clean of examples, add several long long routines to prelude

  • Property mode set to 100644
File size: 2.2 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2015 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// sum.c --
8//
9// Author           : Peter A. Buhr
10// Created On       : Wed May 27 17:56:53 2015
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Mon Jan  4 07:40:24 2016
13// Update Count     : 126
14//
15
16#include "fstream.h"
17
18context sumable( type T ) {
19        const T 0;
20        T ?+?( T, T );
21        T ?+=?( T *, T );
22        T ++?( T * );
23        T ?++( T * );
24};
25
26forall( type T | sumable( T ) )
27T sum( unsigned int n, T a[] ) {
28        T total = 0;                                                                            // instantiate T, select 0
29        for ( unsigned int i = 0; i < n; i += 1 )
30                total += a[i];                                                                  // select +
31        return total;
32}
33
34// Required to satisfy sumable as char does not have addition.
35const char 0;
36char ?+?( char op1, char op2 ) { return (int)op1 + op2; } // cast forces integer addition or recursion
37char ++?( char *op ) { *op += 1; return *op; }
38char ?++( char *op ) { char temp = *op; *op += 1; return temp; }
39
40int main( void ) {
41        const int low = 5, High = 15, size = High - low;
42
43        ofstream *sout = ofstream_stdout();
44
45        char s = 0, a[size];
46        char v = low;
47        for ( int i = 0; i < size; i += 1, v += 1 ) {
48                s += v;
49                a[i] = v;
50        }
51        sout | "sum from " | low | " to " | High | " is "
52                 | (int)sum( size, a ) | ", check " | (int)s | endl;
53
54        int s = 0, a[size];
55        int v = low;
56        for ( int i = 0; i < size; i += 1, v += 1 ) {
57                s += (int)v;
58                a[i] = (int)v;
59        }
60        sout | "sum from " | low | " to " | High | " is "
61                 | sum( size, (int *)a ) | ", check " | (int)s | endl;
62
63        double s = 0.0, a[size];
64        double v = low / 10.0;
65        for ( int i = 0; i < size; i += 1, v += 0.1 ) {
66                s += (double)v;
67                a[i] = (double)v;
68        }
69        sout | "sum from " | low / 10.0 | " to " | High / 10.0 | " is "
70                 | sum( size, (double *)a ) | ", check " | (double)s | endl;
71
72        float s = 0.0, a[size];
73        float v = low / 10.0;
74        for ( int i = 0; i < size; i += 1, v += 0.1f ) {
75                s += (float)v;
76                a[i] = (float)v;
77        }
78        sout | "sum from " | low / 10.0 | " to " | High / 10.0 | " is "
79                 | sum( size, (float *)a ) | ", check " | (float)s | endl;
80}
81
82// Local Variables: //
83// tab-width: 4 //
84// compile-command: "cfa sum.c fstream.o iostream.o iterator.o" //
85// End: //
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