[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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| 9 | // Author : Richard C. Bilson |
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| 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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| 12 | // Last Modified On : Wed May 27 18:43:46 2015 |
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| 13 | // Update Count : 4 |
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| 14 | // |
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| 15 | |
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[a0d9f94] | 16 | extern "C" { |
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[86bd7c1f] | 17 | int printf( const char *, ... ); |
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[a0d9f94] | 18 | } |
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| 19 | |
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| 20 | context sumable( type T ) { |
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[86bd7c1f] | 21 | const T 0; |
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| 22 | T ?+?( T, T ); |
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| 23 | T ?++( T * ); |
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| 24 | T ?+=?( T *, T ); |
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[a0d9f94] | 25 | }; |
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| 26 | |
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| 27 | forall( type T | sumable( T ) ) |
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| 28 | T sum( int n, T a[] ) { |
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[86bd7c1f] | 29 | T total; // instantiate T, select 0 |
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| 30 | total = 0; |
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| 31 | for ( int i = 0; i < n; i += 1 ) |
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| 32 | total = total + a[i]; // select + |
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| 33 | return total; |
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[a0d9f94] | 34 | } |
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| 35 | |
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[bdd516a] | 36 | // Required to satisfy sumable as char does not have addition. |
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| 37 | const char 0; |
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| 38 | char ?+?( char op1, char op2 ) { return op1 + op2; } |
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| 39 | char ?++( char *op ) { return *op + 1; } |
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| 40 | |
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| 41 | const double 0; // TEMPORARY, incorrect use of int 0 |
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| 42 | |
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[a0d9f94] | 43 | int main() { |
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[86bd7c1f] | 44 | const int size = 10, low = 0, High = 10; |
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| 45 | int si = 0, ai[10]; // size |
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| 46 | int i; |
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| 47 | for ( i = low; i < High; i += 1 ) { |
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| 48 | si += i; |
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| 49 | ai[i] = i; |
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| 50 | } |
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| 51 | printf( "sum from %d to %d is %d, check %d\n", |
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| 52 | low, High, sum( size, ai ), si ); |
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| 53 | |
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| 54 | // char ci[10]; |
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| 55 | // char c = sum( size, ci ); |
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| 56 | // float fi[10]; |
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| 57 | // float f = sum( size, fi ); |
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| 58 | |
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| 59 | double sd = 0.0, ad[10]; // size |
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| 60 | for ( i = low; i < High; i += 1 ) { |
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| 61 | double d = i / (double)size; |
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| 62 | sd += d; |
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| 63 | ad[i] = d; |
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| 64 | } |
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| 65 | printf( "sum from %g to %g is %g, check %g\n", |
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| 66 | low / (double)size, High / (double)size, sum( size, ad ), sd ); |
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[a0d9f94] | 67 | } |
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[42dcae7] | 68 | |
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| 69 | // Local Variables: // |
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[86bd7c1f] | 70 | // tab-width: 4 // |
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| 71 | // compile-command: "cfa sum.c" // |
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[42dcae7] | 72 | // End: // |
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