[86bd7c1f] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // sum.c -- |
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| 8 | // |
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[097e2b0] | 9 | // Author : Peter A. Buhr |
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[86bd7c1f] | 10 | // Created On : Wed May 27 17:56:53 2015 |
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| 11 | // Last Modified By : Peter A. Buhr |
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[bd85400] | 12 | // Last Modified On : Fri Feb 5 16:47:44 2016 |
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| 13 | // Update Count : 139 |
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[86bd7c1f] | 14 | // |
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| 15 | |
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[d3b7937] | 16 | #include <fstream> |
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[a0d9f94] | 17 | |
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| 18 | context sumable( type T ) { |
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[86bd7c1f] | 19 | const T 0; |
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| 20 | T ?+?( T, T ); |
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| 21 | T ?+=?( T *, T ); |
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[097e2b0] | 22 | T ++?( T * ); |
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| 23 | T ?++( T * ); |
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[d3b7937] | 24 | }; // sumable |
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[a0d9f94] | 25 | |
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| 26 | forall( type T | sumable( T ) ) |
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[097e2b0] | 27 | T sum( unsigned int n, T a[] ) { |
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| 28 | T total = 0; // instantiate T, select 0 |
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| 29 | for ( unsigned int i = 0; i < n; i += 1 ) |
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| 30 | total += a[i]; // select + |
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[86bd7c1f] | 31 | return total; |
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[d3b7937] | 32 | } // sum |
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[a0d9f94] | 33 | |
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[bdd516a] | 34 | // Required to satisfy sumable as char does not have addition. |
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[bd85400] | 35 | // const char 0; |
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| 36 | // char ?+?( char op1, char op2 ) { return (int)op1 + op2; } // cast forces integer addition or recursion |
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| 37 | // char ++?( char *op ) { *op += 1; return *op; } |
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| 38 | // char ?++( char *op ) { char temp = *op; *op += 1; return temp; } |
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[bdd516a] | 39 | |
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[784deab] | 40 | int main( void ) { |
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[6e7e2b36] | 41 | const int low = 5, High = 15, size = High - low; |
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[097e2b0] | 42 | ofstream *sout = ofstream_stdout(); |
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[bd85400] | 43 | #if 0 |
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[097e2b0] | 44 | |
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| 45 | char s = 0, a[size]; |
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| 46 | char v = low; |
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[6e7e2b36] | 47 | for ( int i = 0; i < size; i += 1, v += 1 ) { |
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[097e2b0] | 48 | s += v; |
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| 49 | a[i] = v; |
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[86bd7c1f] | 50 | } |
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[784deab] | 51 | sout | "sum from " | low | " to " | High | " is " |
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| 52 | | (int)sum( size, a ) | ", check " | (int)s | endl; |
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[86bd7c1f] | 53 | |
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[097e2b0] | 54 | int s = 0, a[size]; |
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| 55 | int v = low; |
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| 56 | for ( int i = 0; i < size; i += 1, v += 1 ) { |
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| 57 | s += (int)v; |
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| 58 | a[i] = (int)v; |
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| 59 | } |
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[784deab] | 60 | sout | "sum from " | low | " to " | High | " is " |
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| 61 | | sum( size, (int *)a ) | ", check " | (int)s | endl; |
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[86bd7c1f] | 62 | |
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[097e2b0] | 63 | float s = 0.0, a[size]; |
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| 64 | float v = low / 10.0; |
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| 65 | for ( int i = 0; i < size; i += 1, v += 0.1f ) { |
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| 66 | s += (float)v; |
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| 67 | a[i] = (float)v; |
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[86bd7c1f] | 68 | } |
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[784deab] | 69 | sout | "sum from " | low / 10.0 | " to " | High / 10.0 | " is " |
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| 70 | | sum( size, (float *)a ) | ", check " | (float)s | endl; |
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[bd85400] | 71 | #endif |
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| 72 | double s = 0, a[size]; |
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[d3b7937] | 73 | double v = low / 10.0; |
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[bd85400] | 74 | |
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[d3b7937] | 75 | for ( int i = 0; i < size; i += 1, v += 0.1 ) { |
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| 76 | s += (double)v; |
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| 77 | a[i] = (double)v; |
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| 78 | } |
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| 79 | sout | "sum from " | low / 10.0 | " to " | High / 10.0 | " is " |
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| 80 | | sum( size, (double *)a ) | ", check " | (double)s | endl; |
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[bd85400] | 81 | |
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| 82 | // struct S { int i, j; } sarr[size]; |
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| 83 | // struct S 0 = { 0, 0 }; |
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| 84 | // struct S 1 = { 1, 1 }; |
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| 85 | // S ?+?( S t1, S t2 ) { S s = { t1.i + t1.j, t2.i + t2.j }; return s; } |
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| 86 | // S ?+=?( S *t1, S t2 ) { *t1 = *t1 + t2; return *t1; } |
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| 87 | // S ++?( S *t ) { *t += 1; return *t; } |
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| 88 | // S ?++( S *t ) { S temp = *t; *t += 1; return temp; } |
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| 89 | // sum( size, sarr ); |
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[d3b7937] | 90 | } // main |
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[42dcae7] | 91 | |
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| 92 | // Local Variables: // |
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[86bd7c1f] | 93 | // tab-width: 4 // |
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[d3b7937] | 94 | // compile-command: "cfa sum.c" // |
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[42dcae7] | 95 | // End: // |
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