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comparison lib/js/urweb.js @ 1619:15e0c935c91b

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Catching integer divisions by zero
author Adam Chlipala <adam@chlipala.net>
date Sat, 03 Dec 2011 09:44:07 -0500
parents 7d459f223ac2
children 43f22a8f76cc
comparison
equal deleted inserted replaced
1618:705cb41ac7d0 1619:15e0c935c91b
17 function eq(x, y) { return x == y; } 17 function eq(x, y) { return x == y; }
18 function plus(x, y) { return x + y; } 18 function plus(x, y) { return x + y; }
19 function minus(x, y) { return x - y; } 19 function minus(x, y) { return x - y; }
20 function times(x, y) { return x * y; } 20 function times(x, y) { return x * y; }
21 function div(x, y) { return x / y; } 21 function div(x, y) { return x / y; }
22 function divInt(x, y) { var n = x / y; return n < 0 ? Math.ceil(n) : Math.floor(n); } 22 function divInt(x, y) { if (y == 0) er("Division by zero"); var n = x / y; return n < 0 ? Math.ceil(n) : Math.floor(n); }
23 function mod(x, y) { return x % y; } 23 function mod(x, y) { return x % y; }
24 function modInt(x, y) { var n = x % y; return n < 0 ? Math.ceil(n) : Math.floor(n); } 24 function modInt(x, y) { if (y == 0) er("Division by zero"); var n = x % y; return n < 0 ? Math.ceil(n) : Math.floor(n); }
25 function lt(x, y) { return x < y; } 25 function lt(x, y) { return x < y; }
26 function le(x, y) { return x <= y; } 26 function le(x, y) { return x <= y; }
27 27
28 // Characters 28 // Characters
29 29