| 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 | // loopctrl.cfa --
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| 8 | //
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| 9 | // Author : Peter A. Buhr
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| 10 | // Created On : Wed Aug 8 18:32:59 2018
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| 11 | // Last Modified By : Peter A. Buhr
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| 12 | // Last Modified On : Thu Jun 27 11:00:09 2024
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| 13 | // Update Count : 161
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| 14 | //
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| 15 |
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| 16 | #include <fstream.hfa>
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| 17 |
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| 18 | void fred() {
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| 19 | // Test all possible loop syntax.
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| 20 |
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| 21 | int s = 0, c = 10, i = 2;
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| 22 |
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| 23 | for ( c ) { sout | "A"; } sout | nl;
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| 24 | for ( ~= c ) { sout | "B"; } sout | nl;
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| 25 | for ( -~ c ) { sout | "C"; } sout | nl;
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| 26 | for ( -~= c ) { sout | "D"; } sout | nl;
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| 27 |
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| 28 | for ( s ~ c ) { sout | "A"; } sout | nl;
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| 29 | for ( s ~= c ) { sout | "B"; } sout | nl;
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| 30 | for ( s -~ c ) { sout | "C"; } sout | nl;
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| 31 | for ( s -~= c ) { sout | "D"; } sout | nl;
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| 32 |
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| 33 | for ( s ~ c ~ i ) { sout | "A"; } sout | nl;
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| 34 | for ( s ~= c ~ i ) { sout | "B"; } sout | nl;
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| 35 | for ( s -~ c ~ i ) { sout | "C"; } sout | nl;
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| 36 | for ( s -~= c ~ i ) { sout | "D"; } sout | nl;
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| 37 |
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| 38 | for ( j; c ) { sout | j; } sout | nl;
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| 39 | for ( j; ~= c ) { sout | j; } sout | nl;
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| 40 | for ( j; -~ c ) { sout | j; } sout | nl;
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| 41 | for ( j; -~= c ) { sout | j; } sout | nl;
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| 42 |
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| 43 | for ( j; s ~ c ) { sout | j; } sout | nl;
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| 44 | for ( j; s ~= c ) { sout | j; } sout | nl;
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| 45 | for ( j; s -~ c ) { sout | j; } sout | nl;
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| 46 | for ( j; s -~= c ) { sout | j; } sout | nl;
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| 47 |
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| 48 | for ( j; s ~ c ~ i ) { sout | j; } sout | nl;
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| 49 | for ( j; s ~= c ~ i ) { sout | j; } sout | nl;
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| 50 | for ( j; s -~ c ~ i ) { sout | j; } sout | nl;
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| 51 | for ( j; s -~= c ~ i ) { sout | j; } sout | nl;
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| 52 |
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| 53 | // CANNOT DIRECTLY INITIALIZE INDEX VARIABLE, ONLY SINGLE LOOP INDEX VARIABLE IN DECLARATION
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| 54 |
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| 55 | for ( j; c ) { sout | j; } sout | nl;
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| 56 | for ( int j; c ) { sout | j; } sout | nl;
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| 57 | for ( int j; ~= c ) { sout | j; } sout | nl;
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| 58 | for ( int j; -~ c ) { sout | j; } sout | nl;
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| 59 | for ( int j; -~= c ) { sout | j; } sout | nl;
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| 60 |
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| 61 | for ( int j; s ~ c ) { sout | j; } sout | nl;
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| 62 | for ( int j; s ~= c ) { sout | j; } sout | nl;
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| 63 | for ( int j; s -~ c ) { sout | j; } sout | nl;
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| 64 | for ( int j; s -~= c ) { sout | j; } sout | nl;
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| 65 |
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| 66 | for ( int j; s ~ c ~ i ) { sout | j; } sout | nl;
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| 67 | for ( int j; s ~= c ~ i ) { sout | j; } sout | nl;
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| 68 | for ( int j; s -~ c ~ i ) { sout | j; } sout | nl;
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| 69 | for ( int j; s -~= c ~ i ) { sout | j; } sout | nl;
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| 70 |
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| 71 | for ( j; s ~ @ ) { if ( j == 10 ) break; sout | j; } sout | nl;
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| 72 | for ( j; @ -~ s ) { if ( j == -10 ) break; sout | j; } sout | nl;
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| 73 | for ( j; s ~ @ ~ i ) { if ( j == 10 ) break; sout | j; } sout | nl;
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| 74 | for ( j; @ -~ s ~ i ) { if ( j == -10 ) break; sout | j; } sout | nl;
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| 75 | for ( j; s ~ @ ~ @ ) { if ( j == 10 ) break; sout | j; j += 1; } sout | nl;
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| 76 |
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| 77 | for ( int j; s ~ @ ) { if ( j == 10 ) break; sout | j; j += 1; } sout | nl;
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| 78 | for ( int j; @ -~ s ) { if ( j == -10 ) break; sout | j; j -= 1; } sout | nl;
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| 79 | for ( int j; s ~ @ ~ i ) { if ( j == 10 ) break; sout | j; } sout | nl;
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| 80 | for ( int j; @ -~ s ~ i ) { if ( j == -10 ) break; sout | j; } sout | nl;
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| 81 | for ( int j; s ~ @ ~ @ ) { if ( j == 10 ) break; sout | j; j += 1; } sout | nl;
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| 82 |
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| 83 | // enum E { A, B, C, D };
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| 84 | // for ( e; A ~= C ) { sout | j; }
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| 85 | // for ( e; A ~= D ) { sout | j; }
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| 86 | // for ( e; A -~= D ~ 2 ) { sout | j; }
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| 87 | // for ( e; E ) { sout | j; }
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| 88 | // for ( e; -~ E ) { sout | j; }
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| 89 | }
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| 90 |
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| 91 | struct S { int i, j; };
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| 92 | void ?{}( S & s ) { s.[i, j] = 0; }
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| 93 | void ?{}( S & s, int i ) { s.[i, j] = [i, 0]; }
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| 94 | void ?{}( S & s, int i, int j ) { s.[i, j] = [i, j]; }
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| 95 | void ?{}( S & s, zero_t ) { s.[i, j] = 0; }
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| 96 | void ?{}( S & s, one_t ) { s.[i, j] = 1; }
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| 97 | int ?<?( S t1, S t2 ) { return t1.i < t2.i && t1.j < t2.j; }
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| 98 | int ?<=?( S t1, S t2 ) { return t1.i <= t2.i && t1.j <= t2.j; }
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| 99 | int ?>?( S t1, S t2 ) { return t1.i > t2.i && t1.j > t2.j; }
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| 100 | int ?>=?( S t1, S t2 ) { return t1.i >= t2.i && t1.j >= t2.j; }
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| 101 | S ?+=?( S & t1, S t2 ) { t1.i += t2.i; t1.j += t2.j; return t1; }
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| 102 | S ?+=?( S & t, one_t ) { t.i += 1; t.j += 1; return t; }
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| 103 | S ?-=?( S & t1, S t2 ) { t1.i -= t2.i; t1.j -= t2.j; return t1; }
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| 104 | S ?-=?( S & t, one_t ) { t.i -= 1; t.j -= 1; return t; }
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| 105 | ofstream & ?|?( ofstream & os, S v ) { return os | '(' | v.i | v.j | ')'; }
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| 106 | void & ?|?( ofstream & os, S v ) { (ofstream &)(os | v); ends( os ); }
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| 107 |
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| 108 | int main() {
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| 109 | // Test some loop options.
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| 110 |
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| 111 | sout | nlOff; // turn off auto newline
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| 112 | while () { sout | "empty"; break; } sout | nl;
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| 113 | do { sout | "empty"; break; } while (); sout | nl;
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| 114 | for () { sout | "empty"; break; } sout | nl | nl;
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| 115 |
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| 116 | for ( 0 ) { sout | "A"; } sout | "zero" | nl;
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| 117 | for ( 1 ) { sout | "A"; } sout | nl;
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| 118 | for ( 10 ) { sout | "A"; } sout | nl;
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| 119 | for ( ~= 10 ) { sout | "A"; } sout | nl;
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| 120 | for ( 1 ~= 10 ~ 2 ) { sout | "B"; } sout | nl;
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| 121 | for ( 1 -~= 10 ~ 2 ) { sout | "C"; } sout | nl;
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| 122 | for ( 0.5 ~ 5.5 ) { sout | "D"; } sout | nl;
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| 123 | for ( 0.5 -~ 5.5 ) { sout | "E"; } sout | nl | nl;
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| 124 |
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| 125 | for ( i; 10 ) { sout | i; } sout | nl;
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| 126 | for ( i; ~= 10 ) { sout | i; } sout | nl;
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| 127 | for ( i; 1 ~= 10 ~ 2 ) { sout | i; } sout | nl;
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| 128 | for ( i; 1 -~= 10 ~ 2 ) { sout | i; } sout | nl;
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| 129 | for ( i; 0.5 ~ 5.5 ) { sout | i; } sout | nl;
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| 130 | for ( i; 0.5 -~ 5.5 ) { sout | i; } sout | nl;
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| 131 | for ( ui; 2u ~= 10u ~ 2u ) { sout | ui; } sout | nl;
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| 132 | for ( ui; 2u -~= 10u ~ 2u ) { sout | ui; } sout | nl | nl;
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| 133 |
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| 134 | // @ means do nothing
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| 135 | for ( i; 1 ~ @ ) {
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| 136 | if ( i > 10 ) break;
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| 137 | sout | i;
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| 138 | } sout | nl;
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| 139 | for ( i; @ -~ 10 ) {
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| 140 | if ( i < 0 ) break;
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| 141 | sout | i;
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| 142 | } sout | nl;
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| 143 | for ( i; 2 ~ @ ~ 2 ) {
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| 144 | if ( i > 10 ) break;
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| 145 | sout | i;
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| 146 | } sout | nl;
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| 147 | for ( i; 2.1 ~ @ ~ @ ) {
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| 148 | if ( i > 10.5 ) break;
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| 149 | sout | i;
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| 150 | i += 1.7;
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| 151 | } sout | nl;
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| 152 | for ( i; @ -~ 10 ~ 2 ) {
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| 153 | if ( i < 0 ) break;
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| 154 | sout | i;
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| 155 | } sout | nl;
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| 156 | for ( i; 12.1 ~ @ ~ @ ) {
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| 157 | if ( i < 2.5 ) break;
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| 158 | sout | i;
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| 159 | i -= 1.7;
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| 160 | } sout | nl | nl;
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| 161 |
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| 162 | enum { N = 10 };
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| 163 | for ( N ) { sout | "N"; } sout | nl;
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| 164 | for ( i; N ) { sout | i; } sout | nl;
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| 165 | for ( i; ~= N ) { sout | i; } sout | nl;
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| 166 | for ( i; -~= N ) { sout | i; } sout | nl | nl;
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| 167 |
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| 168 | const int start = 3, comp = 10, inc = 2;
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| 169 | for ( i; start ~ comp ~ inc + 1 ) { sout | i; } sout | nl | nl;
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| 170 |
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| 171 | for ( i; 10 : j; -5 ~ @ ) { sout | i | j; } sout | nl;
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| 172 | for ( i; 10 : j; @ -~ -5 ) { sout | i | j; } sout | nl;
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| 173 | for ( i; 10 : j; -5 ~ @ ~ 2 ) { sout | i | j; } sout | nl;
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| 174 | for ( i; 10 : j; @ -~ -5 ~ 2 ) { sout | i | j; } sout | nl | nl;
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| 175 |
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| 176 | for ( j; -5 ~ @ : i; 10 ) { sout | i | j; } sout | nl;
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| 177 | for ( j; @ -~ -5 : i; 10 ) { sout | i | j; } sout | nl;
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| 178 | for ( j; -5 ~ @ ~ 2 : i; 10 ) { sout | i | j; } sout | nl;
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| 179 | for ( j; @ -~ -5 ~ 2 : i; 10 ) { sout | i | j; } sout | nl | nl;
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| 180 |
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| 181 | for ( j; @ -~ -5 ~ 2 : i; 10 : k; 1.5 ~ @ ) { sout | i | j | k; } sout | nl;
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| 182 | for ( j; @ -~ -5 ~ 2 : k; 1.5 ~ @ : i; 10 ) { sout | i | j | k; } sout | nl;
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| 183 | for ( k; 1.5 ~ @ : j; @ -~ -5 ~ 2 : i; 10 ) { sout | i | j | k; } sout | nl;
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| 184 |
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| 185 | for ( S s = (S){0}; s < (S){10,10}; s += (S){1} ) { sout | s; } sout | nl;
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| 186 | for ( s; (S){10,10} ) { sout | s; } sout | nl;
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| 187 | sout | nl;
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| 188 | for ( s; (S){0} ~ (S){10,10} ) { sout | s; } sout | nl;
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| 189 | for ( s; (S){0} ~ (S){10,10} ~ (S){1} ) { sout | s; } sout | nl;
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| 190 | for ( s; (S){0} ~= (S){10,10} ) { sout | s; } sout | nl;
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| 191 | for ( s; (S){0} ~= (S){10,10} ~ (S){1} ) { sout | s; } sout | nl;
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| 192 | sout | nl;
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| 193 | for ( s; (S){0} -~ (S){10,10} ) { sout | s; } sout | nl;
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| 194 | for ( s; (S){0} -~ (S){10,10} ~ (S){1} ) { sout | s; } sout | nl;
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| 195 | for ( s; (S){0} -~= (S){10,10} ) { sout | s; } sout | nl;
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| 196 | for ( s; (S){0} -~= (S){10,10} ~ (S){1} ) { sout | s; } sout | nl | nl;
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| 197 |
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| 198 | fred();
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| 199 | }
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| 200 |
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| 201 | // Local Variables: //
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| 202 | // tab-width: 4 //
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| 203 | // compile-command: "cfa loopctrl.cfa" //
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| 204 | // End: //
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